cbse class 9 science chapter 4 case study questions

Class 9 Science Case Study Questions Chapter 4 Structure of Atom

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Case study Questions on Class 9 Science Chapter 4 are very important to solve for your exam. Class 9 Science Chapter 4 Class 9 Science Case Study Questions have been prepared for the latest exam pattern. You can check your knowledge by solving case study-based questions for Class 9 Science Chapter 4 Structure of Atom

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In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.

Structure of Atom Case Study Questions With Answers

Here, we have provided case-based/passage-based questions for Class 9 Science Chapter 4 Structure of Atom

Case Study/Passage-Based Questions

Case Study 1: The maximum number of electrons that are permitted to be assigned to an energy shell of an atom is called the electron capacity of that shell. The distribution of electrons in different orbits or shells is governed by a scheme known as the Bohr-Bury scheme. According to this scheme : (i) The maximum number of electrons that can be present in any shell is given by the formula 2n2 where n is the number of energy levels. (ii) The maximum number of electrons that can be accommodated in the outermost shell is 8. Electrons are filled in the shells in a stepwise manner in increasing the order of energy of the energy shell.

What is the maximum electron capacity of the N shell? (a) 24 (b) 8 (c) 18 (d) 32

Answer: (d) 32

Identify the element with the configuration K-2, L-8, M-3. (a) Aluminium (b) Magnesium (c) Sodium (d) Beryllium

Answer: (a) Aluminium

Which of the following configuration represent sodium? (a) 2, 8, 4 (b) 2, 8, 5 (c) 2, 3 (d) 2, 8, 1

Answer: (d) 2, 8, 1

Case Study/Passage Based Questions

The given diagrams show the atomic structures of elements X and Y.

cbse class 9 science chapter 4 case study questions

Element X and Y could be _ and _ respectively. (a) Be and B (b) C and O (c) F and N (d) C and N

Answer: (d) C and N

Valency of elements X and Y are respectively, (a) 4 and 3 (b) 2 and 5 (c) 1 and 4 (d) 3 and 4

Answer: (a) 4 and 3

Elements X and Y are (a) isotopes (b) isoelectronic (c) isobars (d) isomers.

Answer: (c) isobars

Case Study 2: The mass of an atom is due to the masses of protons and neutrons in the nucleus. The relative masses of protons and neutrons are almost equal to one. Therefore, the atomic mass of an element should be nearly a whole number. But in many cases the atomic masses are fractional. The main reason for these fractional atomic masses is that these elements occur in nature as a mixture of several isotopes. The atomic mass of an element is the average of the atomic masses of these isotopes in the ratio of their proportion of occurrence.

Chlorine occurs in nature in the form of two isotopes with atomic masses 35 u and 37 u in the ratio of 3 : 1 respectively. The atomic mass of chlorine is (a) 35.5 u (b) 34.5 u (c) 35 u (d) 36 u

Answer: (a) 35.5 u

An element occurs in two isotopic forms with atomic masses 10 and 11. What is the percentage abundance of two isotopes in the sample having an atomic mass of 10.80? (a) 20, 80 (b) 50, 50 (c) 25, 70 (d) 60, 40

Answer: (a) 20, 80

The fractional atomic masses of elements are due to the existence of (a) isotopes having different masses (b) diagonal relationship (c) equal number of electrons and protons (d) none of these.

Answer: (a) isotopes having different masses

Case Study 3: The structure of an atom consists of subatomic particles, mainly protons, neutrons, and electrons. Protons and neutrons are located in the nucleus, which is the central region of an atom. Protons carry a positive charge, while neutrons are electrically neutral. Electrons, on the other hand, are negatively charged particles that orbit around the nucleus in energy levels or shells. The number of protons in an atom determines its atomic number, which is unique to each element. The mass number of an atom is the sum of its protons and neutrons. The atomic mass of an element is the weighted average mass of all its naturally occurring isotopes. Isotopes are atoms of the same element that have different numbers of neutrons. The arrangement and distribution of these subatomic particles determine the overall stability and properties of an atom.

Which subatomic particles are mainly located in the nucleus of an atom? a) Protons and electrons b) Neutrons and electrons c) Protons and neutrons d) Protons, neutrons, and electrons Answer: c) Protons and neutrons

What is the charge of protons? a) Positive b) Negative c) Neutral d) Variable Answer: a) Positive

Where are electrons located in an atom? a) Nucleus b) Energy levels or shells c) Protons d) Neutrons Answer: b) Energy levels or shells

What determines the atomic number of an atom? a) Number of electrons b) Number of protons c) Number of neutrons d) Sum of protons and neutrons Answer: b) Number of protons

What are atoms of the same element with different numbers of neutrons called? a) Isotopes b) Ions c) Elements d) Electrons Answer: a) Isotopes

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Class 9 Science Case...

Class 9 Science Case Study Questions

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If you are wondering how to solve class 9 science case study questions, then myCBSEguide is the best platform to choose. With the help of our well-trained and experienced faculty, we provide solved examples and detailed explanations for the recently added Class 9 Science case study questions.

You can find a wide range of solved case studies on myCBSEguide, covering various topics and concepts. Class 9 Science case studies are designed to help you understand the application of various concepts in real-life situations.

The rationale behind Science

Science is crucial for Class 9 students’ cognitive, emotional, and psychomotor development. It encourages curiosity, inventiveness, objectivity, and aesthetic sense.

In the upper primary stage, students should be given a variety of opportunities to engage with scientific processes such as observing, recording observations, drawing, tabulating, plotting graphs, and so on, whereas in the secondary stage, abstraction and quantitative reasoning should take a more prominent role in science teaching and learning. As a result, the concept of atoms and molecules as matter’s building units, as well as Newton’s law of gravitation, emerges.

Science is important because it allows Class 9 Science students to understand the world around us. It helps to find out how things work and to find solutions to problems at the Class 9 Science level. Science is also a source of enjoyment for many people. It can be a hobby, a career, or a source of intellectual stimulation.

Case study questions in Class 9 Science

The inclusion of case study questions in Class 9 science CBSE is a great way to engage students in critical thinking and problem-solving. By working through real-world scenarios, Class 9 Science students will be better prepared to tackle challenges they may face in their future studies and careers. Class 9 Science Case study questions also promote higher-order thinking skills, such as analysis and synthesis. In addition, case study questions can help to foster creativity and innovation in students. As per the recent pattern of the Class 9 Science examination, a few questions based on case studies/passages will be included in the CBSE Class 9 Science Paper. There will be a paragraph presented, followed by questions based on it.

Examples of Class 9 science class case study questions

Class 9 science case study questions have been prepared by myCBSEguide’s qualified teachers. Class 9 case study questions are meant to evaluate students’ knowledge and comprehension of the material. They are not intended to be difficult, but they will require you to think critically about the material. We hope you find Class 9 science case study questions beneficial and that they assist you in your exam preparation.

The following are a few examples of Class 9 science case study questions.

Class 9 science case study question 1

due to its high compressibility
large volumes of a gas can be compressed into a small cylinder
transported easily
all of these
shape, volume
volume, shape
shape, size
size, shape
the presence of dissolved carbon dioxide in water
the presence of dissolved oxygen in the water
the presence of dissolved Nitrogen in the water
liquid particles move freely
liquid have greater space between each other
both (a) and (b)
none of these
Only gases behave like fluids
Gases and solids behave like fluids
Gases and liquids behave like fluids
Only liquids are fluids

Answer Key:

(d) all of these
(a) shape, volume
(b) the presence of dissolved oxygen in the water
(c) both (a) and (b)
(c) Gases and liquids behave like fluids

Class 9 science case study question 2

12/32 times
18 g of O 2
18 g of CO 2
18 g of CH 4
1 g of CO 2
1 g of CH 4 CH 4
2 moles of H2O
20 moles of water
6.022 × 1023 molecules of water
1.2044 × 1025 molecules of water
(I) and (IV)
(II) and (III)
(II) and (IV)
Sulphate molecule
Ozone molecule
Phosphorus molecule
Methane molecule
(c) 8/3 times
(d) 18g of CH 4
(c) 1g of H 2
(d) (II) and (IV)
(c) phosphorus molecule

Class 9 science case study question 3

collenchyma
chlorenchyma
It performs photosynthesis
It helps the aquatic plant to float
It provides mechanical support
Sclerenchyma
Collenchyma
Epithelial tissue
Parenchyma tissues have intercellular spaces.
Collenchymatous tissues are irregularly thickened at corners.
Apical and intercalary meristems are permanent tissues.
Meristematic tissues, in its early stage, lack vacuoles, muscles
(I) and (II)
(III) and (I)
Transpiration
Provides mechanical support
Provides strength to the plant parts
None of these
(a) Collenchyma
(b) help aquatic plant to float
(b) Sclerenchyma
(d) Only (III)
(c) provide strength to plant parts

Cracking Class 9 Science Case Study Questions

There is no one definitive answer to Class 9 Science case study questions. Every case study is unique and will necessitate a unique strategy. There are, nevertheless, certain general guidelines to follow while answering case study questions.

To begin, double-check that you understand the Class 9 science case study questions. Make sure you understand what is being asked by reading it carefully. If you’re unclear, seek clarification from your teacher or tutor.
It’s critical to read the Class 9 Science case study material thoroughly once you’ve grasped the question. This will provide you with a thorough understanding of the problem as well as the various potential solutions.
Brainstorming potential solutions with classmates or other students might also be beneficial. This might provide you with multiple viewpoints on the situation and assist you in determining the best solution.
Finally, make sure your answer is presented simply and concisely. Make sure you clarify your rationale and back up your claim with evidence.

A look at the Class 9 Science Syllabus

The CBSE class 9 science syllabus provides a strong foundation for students who want to pursue a career in science. The topics are chosen in such a way that they build on the concepts learned in the previous classes and provide a strong foundation for further studies in science. The table below lists the topics covered in the Class 9 Science syllabus of the Central Board of Secondary Education (CBSE). As can be seen, the Class 9 science syllabus is divided into three sections: Physics, Chemistry and Biology. Each section contains a number of topics that Class 9 science students must study during the course.

CBSE Class 9 Science (Code No. 086)

Theme: Materials Unit I: Matter-Nature and Behaviour Definition of matter; solid, liquid and gas; characteristics – shape, volume, density; change of state-melting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, sublimation. Nature of matter: Elements, compounds and mixtures. Heterogeneous and homogenous mixtures, colloids and suspensions. Particle nature and their basic units: Atoms and molecules, Law of constant proportions, Atomic and molecular masses. Mole concept: Relationship of mole to mass of the particles and numbers. Structure of atoms: Electrons, protons and neutrons, valency, the chemical formula of common compounds. Isotopes and Isobars.

Theme: The World of the Living Unit II: Organization in the Living World Cell – Basic Unit of life: Cell as a basic unit of life; prokaryotic and eukaryotic cells, multicellular organisms; cell membrane and cell wall, cell organelles and cell inclusions; chloroplast, mitochondria, vacuoles, endoplasmic reticulum, Golgi apparatus; nucleus, chromosomes – basic structure, number. Tissues, Organs, Organ System, Organism: Structure and functions of animal and plant tissues (only four types of tissues in animals; Meristematic and Permanent tissues in plants).

Theme: Moving Things, People and Ideas Unit III: Motion, Force and Work Motion: Distance and displacement, velocity; uniform and non-uniform motion along a straight line; acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion, derivation of equations of motion by graphical method; elementary idea of uniform circular motion. Force and Newton’s laws: Force and Motion, Newton’s Laws of Motion, Action and Reaction forces, Inertia of a body, Inertia and mass, Momentum, Force and Acceleration. Elementary idea of conservation of Momentum. Gravitation: Gravitation; Universal Law of Gravitation, Force of Gravitation of the earth (gravity), Acceleration due to Gravity; Mass and Weight; Free fall. Floatation: Thrust and Pressure. Archimedes’ Principle; Buoyancy. Work, energy and power: Work done by a Force, Energy, power; Kinetic and Potential energy; Law of conservation of energy. Sound: Nature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo.

Theme: Food Unit IV: Food Production Plant and animal breeding and selection for quality improvement and management; Use of fertilizers and manures; Protection from pests and diseases; Organic farming.

PRESCRIBED BOOKS:

Science-Textbook for class IX-NCERT Publication
Assessment of Practical Skills in Science-Class IX – CBSE Publication
Laboratory Manual-Science-Class IX, NCERT Publication
Exemplar Problems Class IX – NCERT Publication

myCBSEguide: A true helper

There are numerous advantages to using myCBSEguide to achieve the highest results in Class 9 Science.

myCBSEguide offers high-quality study materials that cover all of the topics in the Class 9 Science curriculum.
myCBSEguide provides practice questions and mock examinations to assist students in the best possible preparation for their exams.
On our myCBSEguide app, you’ll find a variety of solved Class 9 Science case study questions covering a variety of topics and concepts. These case studies are intended to help you understand how certain principles are applied in real-world settings
myCBSEguide is that the study material and practice problems are developed by a team of specialists who are always accessible to assist students with any questions they may have. As a result, students may be confident that they will receive the finest possible assistance and support when studying for their exams.

So, if you’re seeking the most effective strategy to study for your Class 9 Science examinations, myCBSEguide is the place to go!

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Competency Based Learning in CBSE Schools
Class 11 Physical Education Case Study Questions
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Class 11 Applied Mathematics Case Study Questions
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Case Study Questions of Class 9 Science PDF Download

Download PDF Case Study Questions of Class 9 Science to prepare for the upcoming CBSE Class 9 Exams Exam 2023-24. With the help of our well-trained and experienced faculty, we provide solved examples and detailed explanations for the recently added Class 9 Science case study questions .

Case study questions are based on real or hypothetical scenarios that require students to analyze, evaluate, and apply scientific concepts to solve problems or make informed decisions. They often present a detailed context, providing students with the opportunity to demonstrate their understanding of the subject matter beyond basic recall.

Table of Contents

Class 9 Science: Case Study Questions

Chapterwise Case Study Questions of Class 9 Science

Case Study Questions for Chapter 1 Matter in Our Surroundings
Case Study Questions for Chapter 2 Is Matter Around Us Pure?
Case Study Questions for Chapter 3 Atoms and Molecules
Case Study Questions for Chapter 4 Structure of Atom
Case Study Questions for Chapter 5 The Fundamental Unit of Life
Case Study Questions for Chapter 6 Tissues
Case Study Questions for Chapter 7 Diversity in Living Organisms
Case Study Questions for Chapter 8 Motion
Case Study Questions for Chapter 9 Force and Laws of Motion
Case Study Questions for Chapter 10 Gravitation
Case Study Questions for Chapter 11 Work and Energy
Case Study Questions for Chapter 12 Sound
Case Study Questions for Chapter 13 Why do we Fall ill
Case Study Questions for Chapter 14 Natural Resources
Case Study Questions for Chapter 15 Improvement in Food Resources

You can find a wide range of solved case studies on cbseexperts, covering various topics and concepts. Class 9 Science case studies are designed to help you understand the application of various concepts in real-life situations.

Class 9 Science Syllabus

Unit I: Matter-Nature and Behaviour

Definition of matter; solid, liquid, and gas; characteristics – shape, volume, density; change of statementing (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, sublimation.

Nature of matter: Elements, compounds, and mixtures. Heterogeneous and homogenous mixtures, colloids, and suspensions. Physical and chemical changes (excluding separating the components of a mixture).

Particle nature and their basic units: Atoms and molecules, Law of Chemical Combination, Chemical formula of common compounds, Atomic and molecular masses.

Structure of atoms: Electrons, protons and neutrons, Valency, Atomic Number and Mass Number, Isotopes and Isobars.

Unit II: Organization in the Living World

Cell – Basic Unit of life: Cell as a basic unit of life; prokaryotic and eukaryotic cells, multicellular organisms; cell membrane and cell wall, cell organelles and cell inclusions; chloroplast, mitochondria, vacuoles, endoplasmic reticulum, Golgi apparatus; nucleus, chromosomes – basic structure, number.

Tissues, Organs, Organ System, Organism: Structure and functions of animal and plant tissues (only four types of tissues in animals; Meristematic and Permanent tissues in plants).

Unit III: Motio n, Force, and Work

Motion: Distance and displacement, velocity; uniform and non-uniform motion along a straight line; acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion, elementary idea of uniform circular motion.

Force and Newton’s laws: Force and Motion, Newton’s Laws of Motion, Action and Reaction forces, Inertia of a body, Inertia and mass, Momentum, Force and Acceleration.

Gravitation: Gravitation; Universal Law of Gravitation, Force of Gravitation of the earth (gravity), Acceleration due to Gravity; Mass and Weight; Free fall. Floatation: Thrust and Pressure. Archimedes’ Principle; Buoyancy.

Work, Energy and Power: Work done by a Force, Energy, power; Kinetic and Potential energy; Law of conservation of energy (excluding commercial unit of Energy).

Sound: Nature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo.

Unit IV: Food Production

Plant and animal breeding and selection for quality improvement and management; Use of fertilizers and manures; Protection from pests and diseases; Organic farming.

Books for Class 9 Science Exams

Benefits of Case Study Questions

Enhancing Analytical Skills : Case study questions challenge students to analyze complex scenarios, identify relevant information, and derive meaningful insights. By engaging with these questions, students develop critical analytical skills that are essential for scientific thinking and problem-solving.
Promoting Critical Thinking : Case study questions encourage students to think critically and evaluate different perspectives. They require students to reason, make logical deductions, and justify their answers with supporting evidence. This process helps in honing their critical thinking abilities, enabling them to approach problems from multiple angles.
Encouraging Practical Application of Concepts : By presenting real-world or hypothetical situations, case study questions promote the application of scientific concepts in practical scenarios. This application-based approach fosters a deeper understanding of the subject matter and helps students see the relevance of what they learn in the classroom to everyday life.

Case study questions of Class 9 Science provide students with an opportunity to apply their knowledge, enhance analytical skills, and think critically. By understanding the format, benefits, and effective strategies for answering case study questions, students can excel in this form of assessment. While challenges may arise, practicing time management, improving information extraction skills, and enhancing observation abilities will enable students to overcome these obstacles and perform well. Embracing case study questions as a valuable learning tool can contribute to a holistic understanding of scientific concepts and foster problem-solving abilities.

1. What is the purpose of case study questions in Class 9 Science?

Case study questions serve the purpose of evaluating a student’s understanding of scientific concepts, their ability to apply knowledge in real-life situations, and their analytical and critical thinking skills.

2. How can case study questions help improve analytical skills?

Case study questions require students to analyze complex scenarios, identify relevant information, and derive meaningful insights. Regular practice with such questions can significantly enhance analytical skills.

3. Are case study questions difficult to answer?

Case study questions can be challenging due to their comprehensive nature and the need for critical thinking. However, with practice and effective strategies, students can develop the skills necessary to answer them effectively.

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CBSE Class 9 Study Material

CBSE Class 9 Science Important Case Study Questions with Answers for Term 2 Exam 2022 (PDF)

Check important case study questions of cbse class 9 science to prepare for the cbse term 2 exam 2022. all these questions have been put together by subject experts..

CBSE Class 9 Term 2 Exam 2022: Important case based questions for CBSE Class 9 Science are provided here students to prepare for the upcoming Term 2 Exam 2022. All the questions provided below are curated by the subject experts. These questions are really helpful to revise important concepts and prepare the case study questions for the exam. Answers to all questions have been provided for reference. So, students should practice the chapter-wise questions to clearly understand the right way to attempt the case based questions. Download the chapter-wise questions in PDF.

Check some of the important case study questions below:

Q. Read the following and answer the questions :

A student was asked by his teacher to verify the law of conservation of mass in the laboratory. He prepared 5% aqueous solutions of NaCl and Na 2 SO 4 . He mixed 10 mL of both these solutions in a conical flask. He weighed the flask on a balance. He then stirred the flask with a rod and weighed it after sometime. There was no change in mass.

Was the student able to verify the law of conservation of mass?
If not, what was the mistake committed by him?
In your opinion, what he should have done?
What is the molar mass of Na 2 SO 4 ?
No, he could not verify the law of conservation of mass in-spite of the fact that there was no change in mass.
No chemical reaction takes place between NaCl and Na 2 SO 4 . This means that no reaction actually took place in the flask.
He should have performed the experiment by using aqueous solutions of BaCl 2 and Na 2 SO 4 . A chemical reaction takes place in this case and a white precipitate of BaSO 4 is formed.
Will the weight of the precipitate be the same as that of the reactants before mixing?
If not, what she should have done?
Which law of chemical combination does this support?
State the law of conservation of mass.
No, it will not be the same.
She should have weighed the total contents of the beaker after the reaction and not the precipitate alone.
It supports the law of conservation of mass.
Mass can neither be created nor destroyed during a chemical reaction.

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NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom

23rd December 2023

NCERT Solutions for Class 9 Science (Chemistry) Chapter 4 Structure of the Atom provides detailed answers for all in-text and exercise Questions. These solutions contain an in-depth explanation of each topic involved in the chapter. All these solutions are prepared by expert teachers and updated for the current academic session.

NCERT Solutions for Class 9 Science (Chemistry) Chapter 4 Structure of the Atom Pure help students to understand the fundamental concepts given in class 9 Science textbook. We have prepared the answers to all the questions in an easy and well-structured manner. It helps students to grasp the chapter easily.

CBSE Class 9 Science Structure of the Atom Intext Questions (Solved)

PAGE NO – 39

Question 1: What are canal rays?

Answer: Canal rays are positively charged radiations. These rays consist of positively charged particles known as protons. They were discovered by Goldstein in 1886.

Question 2: If an atom contains one electron and one proton, will it carry any charge or not?

Answer: If an atom contains one electron and one proton, it will not carry any net charge. This is because a proton has a positive charge and an electron has a negative charge, and these two charges are equal in magnitude but opposite in sign. In such an atom, the positive charge of the proton and the negative charge of the electron will cancel each other out, resulting in a neutral overall charge. An example of such an atom is hydrogen, which typically has one proton and one electron in its most common form.

PAGE NO. 41

Question 1: On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole.

Answer: According to Thomson’s model of the atom, an atom consists of both negatively and positively charged particles. The negatively charged particles are embedded in the positively charged sphere. These negative and positive charges are equal in magnitude. Thus, by counterbalancing each other’s effect, they make an atom neutral.

According to Thomson’s model, an atom is neutral because it contains an equal amount of positive and negative charges that balance each other out. In this model, the atom is like a positively charged sphere with negatively charged electrons embedded in it. The positive charge is spread out over the entire sphere, and the electrons are placed within this sphere. Since the number of negative charges (electrons) equals the number of positive charges in the sphere, the overall charge of the atom is neutral. This balance of equal and opposite charges ensures that the atom does not have a net charge.

Question 2: On the basis of Rutherford’s model of an atom, which subatomic particle is present in the nucleus of an atom?

Answer: On the basis of Rutherford’s model of an atom, protons (positively-charged particles) are present in the nucleus of an atom.

Question 3: Draw a sketch of Bohr’s model of an atom with three shells.

NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom image 1

Question 4: What do you think would be the observation if the α-particle scattering experiment is carried out using a foil of a metal other than gold?

Answer: If the α-scattering experiment is carried out using a foil of metal rather than gold, there would be no change in the observation. In the α-scattering experiment, a gold foil was taken because gold is malleable and a thin foil of gold can be easily made. It is difficult to make such foils from other metals.

Question 1: Name the three sub-atomic particles of an atom.

Answer: The three sub-atomic particles of an atom are:

Protons
Electrons, and

Question 2: Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?

Answer: Helium atom has two neutrons. The mass of an atom is the sum of the masses of protons and neutrons present in its nucleus.

Since helium atom has two protons, mass contributed by the two protons is (2 × 1) u = 2 u. Then, the remaining mass (4 − 2) u = 2 u is contributed by 2u /1u = 2 neutrons.

PAGE NO. 42

Question 1: Write the distribution of electrons in carbon and sodium atoms?

Answer: The total number of electrons in a carbon atom is 6. The distribution of electrons in carbon atom is given by:

Or, we can write the distribution of electrons in a carbon atom as 2, 4. The total number of electrons in a sodium atom is 11. The distribution of electrons in sodium atom is given by:

Or, we can write distribution of electrons in a sodium atom as 2, 8, 1.

Question 2: If K and L shells of an atom are full, then what would be the total number of electrons in the atom?

Answer: The maximum number of electrons that can occupy K and L-shells of an atom are 2 and 8 respectively. Therefore, if K and L-shells of an atom are full, then the total number of electrons in the atom would be (2 + 8) = 10 electrons.

PAGE NO. 43

Question 1: How will you find the valency of chlorine, sulphur and magnesium?

Answer: If the number of electrons in the outermost shell of the atom of an element is less than or equal to 4, then the valency of the element is equal to the number of electrons in the outermost shell.

On the other hand, if the number of electrons in the outermost shell of the atom of an element is greater than 4, then the valency of that element is determined by subtracting the number of electrons in the outermost shell from 8.

The distribution of electrons in chlorine, sulphur, and magnesium atoms are 2, 8, 7; 2, 8, 6 and 2, 8, 2 respectively. Therefore, the number of electrons in the outermost shell of chlorine, sulphur, and magnesium atoms are 7, 6, and 2 respectively.

Thus, The valency of chlorine = 8 −7 = 1 The valency of sulphur = 8 − 6 = 2 The valency of magnesium = 2

Question 1: If number of electrons in an atom is 8 and number of protons is also 8, then (i) what is the atomic number of the atom and (ii) what is the charge on the atom?

Answer: (i) The atomic number is equal to the number of protons. Therefore, the atomic number of the atom is 8.

(ii) Since the number of both electrons and protons is equal, therefore, the charge on the atom is 0.

Question 2: With the help of Table 4.1, find out the mass number of oxygen and sulphur atom.

Answer: Mass number of oxygen = Number of protons + Number of neutrons = 8 + 8 = 16

Mass number of sulphur = Number of protons + Number of neutrons = 16 +16 = 32

PAGE NO. 45

Question 1: For the symbol H, D and T tabulate three sub – atomic particles found each of them.

Question 2: Write the electronic configuration of any pair of isotopes and isobars.

Answer: Isotopes: Isotopes are atoms which have the same number of protons but the number of neutrons differs. This leads to the variation in mass number too.

Two isotopes of carbon are 6 𝐶 12 and 6 𝐶 14 The electronic configuration of 6 𝐶 12 is 2, 4. The electronic configuration of 6 𝐶 14 is 2, 4. [Isotopes have same electronic configuration]

Isobars: Isobars are atoms which have the same mass number but differ in the atomic number. Electronic configuration of an isobar pair is as follows,

29 Ca 40 and 8 𝐴𝑟 40 are a pair of isobars of calcium. The electronic configuration of 29 Ca 40 is 2, 8, 8, 2 The electronic configuration of 18 𝐴𝑟 40 is 2, 8, 8. [Isobars have different electronic configuration]

NCERT Class 9 Science Structure of the Atom Exercise Questions (Solved)

Question 1: Compare the properties of electrons, protons and neutrons.

Question 2: What are the limitations of J.J. Thomson’s model of the atom?

Answer: J.J. Thomson’s model of the atom, known as the “plum pudding model,” had a few key limitations:

1. According to J.J. Thomson’s model of an atom, an atom consists of a positively charged sphere with electrons embedded in it. However, later Rutherford’s gold foil experiment showed that the positively charged particles reside at the center of the atom called the nucleus, and the electrons revolve around the nucleus.

2. Thomson’s model was unable to explain many chemical properties of elements, such as why atoms combine in fixed ratios to form compounds.

3. It didn’t clearly distinguish between the nucleus and the rest of the atom, and couldn’t explain why atoms are stable.

Question 3: What are the limitations of Rutherford’s model of the atom?

Answer: According to Rutherford’s model of an atom, electrons revolve around the nucleus in fixed orbits. But, an electron revolving in circular orbits will not be stable because, during the revolution, it will experience acceleration. Due to acceleration, the electrons will lose energy in the form of radiation and fall into the nucleus. In such a case, the atom would be highly unstable and collapse.

Question 4: Describe Bohr’s model of the atom.

Answer: Bohr’s model of the atom Niels Bohr proposed the following postulates regarding the model of the atom.

Only certain orbits known as discrete orbits of electrons are allowed inside the atom.
While revolving in these discrete orbits, the electrons do not radiate energy. These discrete orbits or shells are shown in the following diagram.

NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom image 2

The first orbit (i.e., for n = 1) is represented by letter K. Similarly, for n = 2, it is L − shell, for n = 3, it is M − shell and for n = 4, it is N − shell. These orbits or shells are also called energy levels.

Question 5: Compare all the proposed models of an atom given in this chapter.

Question 6: Summarize the rules for writing of distribution of electrons in various shells for the first eighteen elements.

Answer: The rules for writing of the distribution of electrons in various shells for the first eighteen elements are given below:

(i) The maximum number of electrons that a shell can accommodate is given by the formula ‘2n 2 ‘, where ‘n’ is the orbit number or energy level index (n = 1, 2, 3…). Now, Maximum number of electrons in different shells are: K shell n = 1: 2n 2 = 2(1) 2 = 2 L shell n = 2: 2n 2 = 2(2) 2 = 8 M shell n = 3: 2n 2 = 2(3) 2 = 18 N shell n = 4: 2n 2 = 2(4) 2 = 32

(ii) The outermost orbit can be accommodated by a maximum number of 8 electrons.

(iii) Shells are filled with electrons in a step-wise manner i.e., the outer shell is not occupied with electrons unless the inner shells are completely filled with electrons.

Question 7: Define valency by taking examples of silicon and oxygen.

Answer: Valency is the measure of the ability of an atom to combine with other atoms. It is determined by the number of electrons an atom can lose, gain, or share to become stable.

Example with Silicon : Silicon has 4 electrons in its outermost shell. It can share these 4 electrons with other atoms to complete its outer shell, typically holding 8 electrons. So, the valency of silicon is 4, as it can form bonds by sharing 4 electrons.
Example with Oxygen : Oxygen has 6 electrons in its outer shell. It needs 2 more electrons to complete its shell. So, it can either gain 2 electrons or share 2 electrons with other atoms. Therefore, the valency of oxygen is 2.

Question 8. Explain with examples: (i) Atomic number (ii) Mass number, (iii) Isotopes and (iv) Isobars. Give any two uses of isotopes.

(i) Atomic number: The atomic number of an element is the total number of protons present in the atom of that element. For example, nitrogen has 7 protons in its atom. Thus, the atomic number of nitrogen is 7.

(ii) Mass number: The mass number of an element is the sum of the number of protons and neutrons present in the atom of that element. For example, the atom of boron has 5 protons and 6 neutrons. So, the mass number of boron is 5 + 6 = 11.

(iii) Isotopes: They are atoms of the same element and have same atomic number but different mass number/atomic mass. For example: C 12 and 6 C 14

(iv) Isobars: They are atoms of different elements having same mass number but different atomic number. For example calcium, atomic number 20 and argon, atomic number 18. The number of electrons in these atoms is different, but the mass number of both these elements is 40. That is, the total number of neutrons is the same in the atoms of this pair of elements.

Two uses of isotopes are as follows:

An isotope of uranium is used as a fuel in nuclear reactors.
An isotope of cobalt is used in the treatment of cancer.

Question 9: Na has completely filled K and L shells. Explain.

Answer: Na has atomic number 11, so its electronic configuration is = 2, 8, 1 Sodium atom (Na) looses 1 electron to become stable and form Na + ion. so its electronic configuration is = 10 = 2, 8. The above configuration indicates completely filled K, L shells.

Question 10: If bromine atom is available in the form of, say, two isotopes 35 𝐵𝑟 79 (49.7%) and 35 𝐵𝑟 81 (50.3%), calculate the average atomic mass of bromine atom.

Answer: The average atomic mass of bromine

NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom image 3

Question 11. The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes 16 8 X and 18 8 X in the sample?

NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom image 4

Question 12: When 90% is the X-16 sample so for X-18 sample % = 100-90=10% If Z = 3, what would be the valency of the element? Also, name the element.

Answer: By Z = 3, we mean that the atomic number of the element is 3. Its electronic configuration is 2, 1. Hence, the valency of the element is 1 (since the outermost shell has only one electron). Therefore, the element with Z = 3 is lithium.

Question 13: Composition of the nuclei of two atomic species X and Y are given as under

Give the mass numbers of X and Y. What is the relation between the two species?

Answer: Mass number of X = Number of protons + Number of neutrons = 6 + 6 = 12

Mass number of Y = Number of protons + Number of neutrons = 6 + 8 = 14

These two atomic species X and Y have the same atomic number, but different mass numbers. Hence, they are isotopes.

Question 14. For the following statements, write T for true and F for false. (a) J.J. Thomson proposed that the nucleus of an atom contains only nucleons. (b) A neutron is formed by an electron and a proton combining together. Therefore it is neutral. (c) The mass of an electron is about 1/2000 times that of proton. (d) An isotope of iodine is used for making tincture iodine, which is used as a medicine.

Solution: (a) False (b) False (c) True (d) False

Put a tick(✓) against correct choice and cross(x) against wrong choice in questions 15, 16 and 17.

Question 15. Rutherford’s alpha-particle scattering experiment was responsible for the discovery of (a) Atomic nucleus (b) Electron (c) Proton (d) Neutron

Answer: (a) Atomic nucleus

Question 16. Isotopes of an element have (a) The same physical properties (b) Different chemical properties (c) Different number of neutrons (d) Different atomic numbers.

Answer: (c) Different number of neutrons

Question 17. Number of valence electrons in Cl − ion are: (a) 16 (b) 8 (c) 17 (d) 18

Answer: (b) 8

Electronic distribution of Cl is K-2, L-8, M-7. Valence electrons are 7, hence chlorine gains one electron for the formation of Cl – . Therefore, its valency is 8.

Question 18. Which one of the following is a correct electronic configuration of Sodium? (a) 2, 8 (b) 8, 2, 1 (c) 2, 1, 8 (d) 2, 8, 1

Answer: (d) 2, 8, 1

Question 19: Complete the following table.

NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom image 5

Answer: The following table depicts the missing data: Atomic number(Z) =Number of protons Mass number = Number of neutrons + atomic number (or) Mass number(A) = Number of neutrons + number of neutrons

NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom image 6

CBSE Class 9 Science Chapter wise Important Questions - Free PDF Download

Class 9 Science has 15 chapters related to various scientific topics and concepts. All these chapters have been added to the syllabus to ensure the development of scientific concepts and the knowledge foundation among the students. To make this process more efficient, practice solving the Class 9 Science Term 2 Important Questions with Solutions and prepare the chapters well. Learn how to answer such questions from the solutions and take a step ahead of the competition.

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CBSE Class 9 Science Chapter-wise Important Questions

Chapter wise Important Questions for CBSE Class 9 Science

CBSE Important Questions for Class 9 Science

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FAQs on Important Questions for CBSE Class 9 Science (2024-25)

Q 1: How many chapters are there in CBSE Class 9 Science?

Ans: There are a total of 15 chapters in CBSE Class 9 Science syllabus. The first part of the syllabus consists of chapter 1: matters in our surroundings, chapter 2: Is matter around us pure, chapter 3: atoms and molecules, chapter 4: structure of the atoms, chapter 5: the fundamental unit of life, chapter 6: tissues and chapter 7: diversity in living organisms.

The second part of the syllabus consists of chapter 8: motion, chapter 9: force and laws of motion, chapter 10: gravitation, chapter 11: work and energy, chapter 12: sound, chapter 13: why do we fall ill, chapter 14: natural resources and chapter 15: improvements in food resources.

Q 2: Explain about different habitats from chapter 1 matters in our surroundings.

Ans: In this segment, you will learn about the comparison of two different kinds of organisms, one from the desert, and the other from the sea i.e., camel and fish. They explain why camels can live in the desert and why fish can live in the sea. The features of camels will help them survive in the desert while that of fish allows them to live in water.

It says that features are present in all animals which help them survive in the surroundings in which they live. This concept also states that habitat is defined as the surroundings where an animal lives and function of habitat is mentioned.

Q 3: Brief about the chapter sound.

Ans: In chapter sound, you will be taught about how sound plays an important role in human life. You will also learn about noise, vibration and medium to travel. Here, you will come across sound is produced by vibrating bodies, the sound produced by humans, sounds need a medium for propagation, we hear sounds through our ears, aptitude, time period and frequency of a vibration, audible and inaudible sounds, noise and music and noise pollution. You will also learn about:

Sound is produced by a vibrating body

Sound Produced by Humans

Sound Needs a Medium of Propagation

We Hear Sounds through Our Ears

Amplitude, Time Period and Frequency of a Vibration

Audible and Inaudible Sounds

Noise and Music

Noise Pollution

Q 4: Are the solutions of Vedantu, enough to score good marks?

Ans: Our solutions are prepared to the point and they are drafted by thinking from the examination point of view. Answers to the exercise questions are clearly given with examples and they are 100% accurate. Our solutions will make your preparation easy for the examination as they are prepared as per the guidelines given by CBSE Science Syllabus and NCERT Book.

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Case Study Questions Class 9 Science The Fundamental Unit of Life

Case study questions class 9 science chapter 5 the fundamental unit of life.

CBSE Class 9 Case Study Questions Science The Fundamental Unit of Life. Important Case Study Questions for Class 9 Exam. Here we have arranged some Important Case Base Questions for students who are searching for Paragraph Based Questions The Fundamental Unit of Life.

At Case Study Questions there will given a Paragraph. In where some Questions will made on that respective Case Based Study. There will various types of marks will given 1 marks, 2 marks, 3 marks or 4 marks.

CBSE Case Study Questions Class 9 Science – The Fundamental Unit of Life

All living Organisms are made up of cells and these cells perform all the functions essential for the survival of the Organism eg. Respiration, digestion, excretion etc. In Unicellular organisms, a single cell carries out all these functions and in multicellular organisms different group of cells carry out different functions.

Cells were first discovered by Robert Hooke in 1665. He observed the cells in a cork slice with the help of a primitive microscope. Leeuwenhoek (1674), with the improved microscope, discovered the free living cells in pond water for the first time. It was Robert Brown in 1831 who discovered the nucleus in the cell. Purkinje in 1839 coined the term ‘protoplasm’ for the fluid substance of the cell.

(1) Who discovered the cell?

(a) Robert Hooke

(b) Leeuwenhoek

(d) T. Schwann

(2) Who discovered the nucleus in the cell?

(3) Who coined the term ‘Protoplasm’?

(d) Purkinje

(4) What is protoplasm?

(a) Unit of life

(b) Cell organelle

(d) Cytoplasm

(5) Which of these statement is true about the cell?

(a) All organism are made up of cell

(b) Cell is the basic unit of life

(d) All above

The cell theory, that all the plants and animals are composed of cells and that the cell is the basic unit of life, was presented by two biologists, German zoologist Schleiden (1838) and British zoologist Schwann (1839). The cell theory was further expanded by Virchow (1855) by suggesting that all cells arise from pre-existing cells. With the discovery of the electron microscope in 1940, it was possible to observe and understand the complex structure of the cell and its various organelles.

(1) Theodore Schwann was a _____

(a) British zoologist

(b) German zoologist

(d) German botanist

(2) Matthias Schleiden was a _____

(a) German zoologist

(b) British zoologist

(d) British botanist

(3) Which of these scientists formulated the cell theory?

(a) Schleiden and Schwann

(b) Rudolf Virchow

(d) Antony Von Leeuwenhoek

(4) Which scientist was the first to explain that new cells arise from pre-existing cells?

(a) Antony Von Leeuwenhoek

(b) Matthias Schleiden

(d) Theodore Schwann

(5) Which of these scientists did not contribute to the cell theory?

(a) Robert Koch

(d) Rudolph Virchow

Plasma membrane or Cell membrane is the outermost covering of the cell that separates the contents of the cell from its external environment. The plasma membrane is flexible and is made up of organic molecules called lipids and proteins. The flexibility of the cell membrane also enables the cell to engulf in food and other material from its external environment. Such processes are known as endocytosis.The plasma membrane allows or permits the entry and exit of some materials in and out of the cell. It also prevents movement of some other materials. The cell membrane, therefore, is called a selectively permeable membrane.

Some substances like carbon dioxide or oxygen can move across the cell membrane by a process called diffusion. There is spontaneous movement of a substance from a region of high concentration to a region where its concentration is low. Similar thing happens in cells – some substance like CO2 (carbon dioxide is cellular waste and requires to be excreted out by the cell) accumulates in high concentrations inside the cell. In the cell’s external environment, the concentration of CO2 is low as compared to that inside the cell. As soon as there is a difference of concentration of CO2 inside and outside a cell, CO2 moves out of the cell, from a region of high concentration, to a region of low concentration outside the cell by the process of diffusion.

Water obeys the law of diffusion. The movement of water molecules through such a selectively permeable membrane is called osmosis. The movement of water across the plasma membrane is also affected by the amount of substance dissolved in water. Thus, osmosis is the net diffusion of water across a selectively permeable membrane toward a higher solute concentration.

(1) The plasma membrane is made up of ___________

(a) Proteins

(d) none of above

(2) Which of the following substance is known as cellular waste?

(b) Nitrogen

(d) None of above

(3) The movement of a substance from the region of higher concentration to the region where its concentration is lower is called as _____________

(a) Osmosis

(b) Diffusion

(4) Why cell membrane is known as selectively permeable membrane?

(5) What is mean by diffusion?

(6) Define Osmosis.

(d) Cell membrane allows or permits the entry and exit of some materials in and out of the cell. It also prevents movement of some other materials. Hence it is called as selectively permeable membrane.

(e) It is spontaneous movement of a substance from a region of high concentration to a region where its concentration is low. For example, some substances like carbon dioxide or oxygen can move across the cell membrane by a process called diffusion.

Plant cells, in addition to the plasma membrane, have another rigid outer covering called the cell wall. The cell wall lies outside the plasma membrane. The plant cell wall is mainly composed of cellulose. Cellulose is a complex substance and provides structural strength to plants. When a living plant cell loses water through osmosis there is shrinkage or contraction of the contents of the cell away from the cell wall. This phenomenon is known as plasmolysis.

(1) Which of the following is the main constituent of cell wall?

(d) Cellulose

(2) Which of the following is outer most covering of the plant cell?

(a) Cell membrane

(b) Plasma membrane

(3) Choose the correct set of statements from the following.

Statement 1 – Cell wall lies outside the plasma membrane.

Statement 2 – Cell wall is mainly composed of cellulose.

Statement 3 – Cellulose is a complex substance and provides structural strength to plants.

Statement 4 – Cell wall lies outside the plasma membrane.

(a) Statement 1 & 3

(b) Statement 1 & 2

(d) All statement are correct

(4) What is mean by plasmolysis?

(5) What is the reason behind structural strength of plant cell?

(4) When living plant cell loses water through osmosis there is contraction of the contents of the cell away from the cell wall. This phenomenon is called as plasmolysis.

(5) The plant cell wall is mainly composed of cellulose. Cellulose is a complex substance and provides structural strength to plants.

Every cell has a membrane around it to keep its own contents separate from the external environment. Large and complex cells, including cells from multicellular organisms, need a lot of chemical activities to support their complicated structure and function. To keep these activities of different kinds separate from each other, these cells use membrane-bound little structures within themselves. The cytoplasm is the jelly like fluid content inside the plasma membrane which contains many specialised cell organelles. Such as Endoplasmic Reticulum, Golgi apparatus, Lysosomes, Ribosomes, Nucleus, Chloroplast, Mitochondria and Plastids.Each of these organelles performs a specific function for the cell. Some of these organelles are visible only with an electron microscope. They are important because they carry out some very crucial functions in cells.

(1) Identify the statement which is true for cells.

Statement 1 – Some cell organelles are visible only with an electron microscope.

Statement 2 – Cytoplasm is jelly like fluid present inside the cell.

Statement 3 – Cell organelles perform all the functions in cell.

Statement 4 – Every cell has a membrane around it to keep its own contents separate from the external environment.

(b) Statement 2 & 4

(d) All statement are true.

(2) A suitable term for the various components of cells is ________

(b) cell organelles

(3) The jelly-like fluid substance present in cells is called __________

(a) Protoplasm

(b) Chromosome

(4) What is cell organelles?

(5) Enlist the any five cell organelles.

(4) Cell organelles are the specialized organelles present with in the cells these organelles are involved in carrying out essential functions.

(5) Endoplasmic Reticulum, Golgi apparatus, Lysosomes, Ribosomes, Nucleus, Chloroplast, Mitochondria and Plastids.

The endoplasmic reticulum is a large network of membrane-bound tubes and sheets. It looks like long tubules or round or oblong bags (vesicles). It is discovered by Porter and Thompson. The ER membrane is similar in structure to the plasma membrane. There are two types of ER– rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). RER looks rough under a microscope because it has particles called ribosomes attached to its surface. The ribosomes, which are present in all active cells, are the sites of protein manufacture. The manufactured proteins are then sent to various places in the cell depending on need, using the ER. The SER helps in the manufacture of fat molecules, or lipids, important for cell function. Some of these proteins and lipids help in building the cell membrane. This process is known as membrane biogenesis. Some other proteins and lipids function as enzymes and hormones. Although the ER varies greatly in appearance in different cells, it always forms a network system.

(1) Who discovered endoplasmic reticulum?

(a) Porter and Thompson

(b) Robert Brown

(d) Koshland

(2) Which are the components of endoplasmic reticulum__________

(a) Cisternae, tubules and vesicles.

(b) Cisternae, chromatids and vacuoles

(d) None of the above

(3) Endoplasmic reticulum membrane which is associated with ribosomes is called_______

(a) ER lumen

(b) Smooth endoplasmic reticulum

(d) Endosome

(4) Enlist the types of Endoplasmic Reticulum.

(5) Define membrane biogenesis?

(4) Smooth endoplasmic reticulum and Rough endoplasmic reticulum

(5) The SER helps in the manufacture of fat molecules, or lipids, important for cell function. Some of these proteins and lipids help in building the cell membrane. This process is known as membrane biogenesis.

The Golgi apparatus, first described by Camilo Golgi, consists of a system of membrane-bound vesicles (flattened sacs) arranged approximately parallel to each other in stacks called cisterns. These membranes often have connections with the membranes of ER and therefore constitute another portion of a complex cellular membrane system. The material synthesised near the ER is packaged and dispatched to various targets inside and outside the cell through the Golgi apparatus. Its functions include the storage, modification and packaging of products in vesicles. In some cases, complex sugars may be made from simple sugars in the Golgi apparatus. The Golgi apparatus is also involved in the formation of lysosomes

(d) Camilo Golgi

(2) A system of membrane-bound flattened sacs arranged approximately parallel to each other in stacks are called as _________

(a) Cisterns

(b) Vesicles

(d) Vacuoles

(3) Membrane bound flattened sacs is termed as _________

(4) Enlist the function of Golgi apparatus.

(5) Name the cell organelles which is involved in the formation of lysosomes?

(4) Functions of Golgi apparatus:

Storage, modification and packaging of products
Involved in formation of lysosomes

(5) Golgi apparatus

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Tribals, Dikus and the Vision of a Golden Age Class 8 Assertion Reason CBSE History Chapter 4

Hello students, we are providing assertion reason questions for class 8 social science. Assertion reason questions are the new question format that is introduced in CBSE board. The resources for assertion reason questions are very less. So, to help students we have created chapterwise assertion reason questions for class 8 social science. In this article, you will find assertion reason questions for CBSE Class 8 Social Science History Chapter 4 Tribals, Dikus and the Vision of a Golden Age. It is a part of Assertion Reason Questions for CBSE Class 8 Social Science Series.

Table of Contents

Assertion Reason Questions:

Q.1. Assertion (A): Under British rule, the functions and powers of the tribal chiefs changed considerably. Reason(R): Tribal chiefs lost the authority they had earlier enjoyed amongst their people, and were unable to fulfil their traditional functions

Difficulty Level: Medium

Ans. Option (a) is correct.

Q. 2. Assertion(A): In 1895 Birsa urged his followers to recover their glorious past. Reason(R): The thing that worried British officials most was the political aim of the Birsa movement.

Ans. Option (b) is correct.

Assertion Reason questions for other chapters of class 8 social science is given below.

Ruling the Countryside Class 8 Assertion Reason CBSE History Chapter 3

From Trade to Territory Class 8 Assertion Reason CBSE History Chapter 2

How, when and where class 8 assertion reason cbse history chapter 1.

We hope the given assertion reason questions for From Trade to Territory Class 8 helps you in your learning.

Topics from which assertion reason questions may be asked

Here is a list of topics from which assertion reason questions may be asked.

Understand the life of tribal people during the British period.
Policies of Colonial administration regarding tribal population in India.
Tribal Revolts, a movement led by Birsa Munda.

Tribal societies did not have sharp social divisions. All those who belonged to the same tribe believed that they share a common tie of kinship. There were no social or economic differences within the tribes. Trible people in different parts of India were involved in a variety of activities like Jhum cultivation, hunting and gathering forest products, herding and rearing of animals, shifting cultivation, etc. But the British did not like the moving communities as it was difficult to control, so they forced them to settle down. Moreover, they stopped them from living inside the forests which created problems in their lives and led to many tribal revolts in the country.

Frequently Asked Questions (FAQs) on Tribals, Dikus and the Vision of a Golden Age Class 8 Assertion Reason

Q1: what are assertion-reason questions.

A1: Assertion-Reason questions are a type of question format used in CBSE exams where two statements are provided: an Assertion (A) and a Reason (R). Students need to determine whether each statement is true or false and if the Reason correctly explains the Assertion.

Q2: How do Assertion-Reason questions differ from other question types?

A2: Unlike multiple-choice questions, Assertion-Reason questions require students to analyze the relationship between two statements. It’s not just about knowing the facts but understanding how they connect logically.

Q3: What steps should I follow to correctly answer Assertion-Reason questions?

A3: Follow these steps: Read both statements carefully. Understand what each statement is saying. Determine the truth value of each statement. Decide if each statement is true or false independently. Analyze the relationship. If both statements are true, decide whether the Reason (R) correctly explains the Assertion (A). Choose the correct option. Based on your analysis, select the appropriate answer from the given options.

Q4: What options are typically provided for Assertion-Reason questions?

A4: The typical options are: A. Both A and R are true, and R is the correct explanation of A. B. Both A and R are true, but R is not the correct explanation of A. C. A is true, but R is false. D. A is false, but R is true.

Q5: What should I check to determine if the Reason correctly explains the Assertion?

A5: Ensure that the Reason provides a logical explanation for the Assertion. Check if the Reason directly addresses the cause or basis of the Assertion and if they are contextually linked.

Q6: How can I improve my skills in answering Assertion-Reason questions?

A6: Practice regularly with sample questions and past papers. Focus on understanding the concepts thoroughly rather than rote memorization. Analyzing how different facts and concepts interrelate will enhance your ability to correctly answer these questions.

Q7: What are common mistakes to avoid when answering Assertion-Reason questions?

A7: Common mistakes include: Not reading the statements carefully and missing key details. Assuming the Reason explains the Assertion without checking the logical connection. Confusing the order or relationship between the statements. Overthinking and adding information not provided in the question.

Q8: How important is contextual understanding in Assertion-Reason questions?

A8: Contextual understanding is crucial. It helps you determine whether the Reason accurately and logically explains the Assertion within the context of the subject matter.

Q9: What resources can help me practice Assertion-Reason questions?

A9: Use study guides specifically designed for Assertion-Reason questions. Online educational platforms and reference books for Class 8 Social Science also offer practice questions and explanations. xamcontent.com also provides assertion reason questions for cbse class 8 social science .

Q10: What are the important keywords for CBSE Class 8 Tribals, Dikus and the Vision of a Golden Age?

A10: Important keywords for CBSE Class 8 Tribals, Dikus and the Vision of a Golden Age are given below: Dikus: Dikus were the outsiders who visited Munda lands. These people included British officials, Hindu landlords, moneylenders and traders. Jhum: Jhum was a cultivation practice adopted or practised by the tribals. In this type of agriculture, a patch of land was selected for cultivation and scrubs were burned to clear the land to raise crops for 2 to 3 years. Fallow: Land which is left uncultivated for some time so that the soil regains its fertility. Mahua: An edible flower used to make alcohol. Bewar: A term used for shifting cultivation in Madhya Pradesh. Sleeper: Horizontal planks of wood used to lay railway lines. Akhara: Wrestling ground Vaishnav: Those who worship Lord Vishnu. Satyug: The Age of Truth Sirdars: The chiefs/leaders Sal: A type of tree

Q11: What are the important dates that should be remembered for CBSE Class 8 Tribals, Dikus and the Vision of a Golden Age?

A11: Important dates that should be remembered for CBSE Class 8 Tribals, Dikus and the Vision of a Golden Age are given below: 1831-32: The Kols revolted against the forest laws of the Britishers. 1855: Santhals rebelled against colonial rule. Mid 1870s: Birsa Munda was born. 1871: The Britishers passed the Criminal Tribes Act. 1895: Birsa Munda was arrested. 1897: Birsa Munda was released. 1900: Birsa Munda died. 1906: Songram Sangma rebelled in Assam. 1910: The Bastar rebellion broke out in central India. 1940: Warli Revolt in Maharashtra.

Tribals, Dikus and the Vision of a Golden Age Class 8 Assertion Reason CBSE History Chapter 4

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CBSE Important Questions
Important Questions For Class 9 Science

CBSE Important Questions for Class 9 Science

CBSE Important Questions for Class 9 Science play an important role in students’ exam preparation. It gives an idea of what types of questions can be asked in the examination. It also develops skills for miscellaneous questions, which are generally neglected by students. Moreover, practising CBSE Important Questions for Class 9 Science will boost the student’s confidence.

By solving these important questions, the students will be more familiar with the type of questions asked in final exams. Hence, they will be able to face the exams more confidently and without fear. Science is a subject which needs conceptual understanding. Just mugging up the answer will not fulfil the purpose. While solving the CBSE Class 9 important questions of Science, students will easily grasp the concepts. Apart from this, they will also acquire answer writing skills in a better way. They will learn to draw the diagrams and write the formulas wherever it is required while answering. This will help them fetch more marks in exams.

Students must start solving the important questions once they complete the CBSE Class 9 Science Syllabus at least 2 months before the annual exam. Here, we have provided the chapter-wise CBSE important questions for Class 9 Science. These questions are created from an exam perspective and are most likely to be asked in the exam.

CBSE Class 9 Science Marking Scheme

The table below shows the weightage of the types of questions asked in the exam. Go through it to know the Class 9 Science Exam pattern in detail. We have included all these types of questions in the CBSE Important Questions so that students do not miss anything.

Benefits of Important Questions for CBSE Class 9 Science

CBSE Important Questions for Class 9 Science gives a competitive edge to the students. Here are the benefits of studying through these important questions:

Students will revise everything and cover the entire syllabus.
The questions are created by the subject experts exclusively for students to prepare better for the exams.
There is a high chance that some of these questions will be asked in the exam.
Students will have good practice with different types of questions and will be well prepared for the Science paper.

We hope students have found this information on “CBSE Important Question for Class 9 Science” useful for their studies. Students can also access CBSE Class 9 Science Sample Papers , solutions, exam tips, projects, etc., on BYJU’S website.

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Case Study and Passage Based Questions for Class 9 Science Chapter 9 Force and Laws of Motion

Last modified on: 2 years ago
Reading Time: 6 Minutes

Case Study/Passage Based Questions:

Question 1:

Read the following and answer any four questions from (i) to (v) given below :

In the figure below the card is flicked with a push. It was observed that the card moves ahead while coin falls in glass.

(i) Give reason for the above observation. (a) The coin possesses inertia of rest, it resists the change and hence falls in the glass. (b) The coin possesses inertia of motion; it resists the change and hence falls in the glass. (c) The coin possesses inertia of rest, it accepts the change and hence falls in the glass. (d) The coin possesses inertia of rest, it accepts the change and hence falls in the glass.

(ii) Name the law involved in this case. (a) Newton’s second law of motion. (b) Newton’s first law of motion. (c) Newton’s third law of motion. (d) Law of conservation of energy

(iii) If the above coin is replaced by a heavy five-rupee coin, what will be your observation. Give reason. (a) Heavy coin will possess more inertia so it will not fall in tumbler. (b) Heavy coin will possess less inertia so it will fall in tumbler. (c) Heavy coin will possess more inertia so it will fall in tumbler. (d) Heavy coin will possess less inertia so it will not fall in tumbler.

(iv) Name the law which provides the definition of force. (a) Law of conservation of mass (b) Newton’s third law. (c) Newton’s first law (d) Newton’s second law.

(v) State Newton’s first law of motion. (a) Energy can neither be created nor be destroyed, it can be converted from one form to another, total amount of energy always remains constant. (b) A body at rest remains at rest or, if in motion, remains in motion at constant velocity unless it is acted upon by an external unbalanced force. (c) For every action in nature there is an equal and opposite reaction. (d) The acceleration in an object is directly related to the net force and inversely related to its mass.

Other Chapters:

Case Study and Passage Based Questions for Class 9 Science Chapter 3 Atoms and Molecules

Last modified on:2 years agoReading Time:5MinutesCase Study Questions for Class 9 Science Chapter 3 Atoms and Molecules In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then…

Case Study and Passage Based Questions for Class 9 Science Chapter 4 Structure of Atom

Last modified on:2 years agoReading Time:4MinutesCase Study Questions for Class 9 Science Chapter 4 Structure of Atom In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then…

Case Study and Passage Based Questions for Class 9 Science Chapter 10 Gravitation

Last modified on:2 years agoReading Time:4MinutesCase Study Questions for Class 9 Science Chapter 10 Gravitation In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then questions based…

Case Study and Passage Based Questions for Class 9 Science Chapter 11 Work and Energy

Last modified on:2 years agoReading Time:4MinutesCase Study Questions for Class 9 Science Chapter 11 Work and Energy In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then…

Case Study and Passage Based Questions for Class 9 Science Chapter 13 Why Do We Fall Ill

Last modified on:2 years agoReading Time:4MinutesCase Study Questions for Class 9 Science Chapter 13 Why Do We Fall Ill In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given,…

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Class 8 Maths MCQs Chapter-Wise with Answers

Table of Contents

Get ready for Class 8 Math Multiple Choice Questions (MCQs) organized by chapter from 1 to 16, complete with answers. These MCQs follow the NCERT Solutions curriculum and match the latest CBSE syllabus for class 8 . By practicing these questions, students can efficiently review each chapter’s topics and prepare well for their final exams.

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MCQs for Class 8 Maths Chapter – wise

Access MCQs for Class 8 Math online , tailored for 9th standard students. Find direct links to each chapter from 1 to 16, covering essential concepts to help you gauge your exam readiness. These resources not only aid in exam performance but also in excelling in competitions like Maths Olympiads . It’s recommended to practice these MCQs using your own problem-solving methods and check answers against provided solutions. Setting time limits for each question during practice is beneficial.

Chapter 2: Fractions and Decimals

Ques. What is the sum of 3/4 and 2/5?

Ans. B) 11/20

Explanation: To find the sum of fractions, we need a common denominator. Here, the common denominator is 20. So, 3/4 + 2/5 = 15/20 + 8/20 = 23/20 = 1 3/20 = 1.15

Ques. Which of the following is a terminating decimal?

Ans. D) 4/25

Explanation: A terminating decimal is a decimal that ends. 4/25 = 0.16, which terminates.

Ques. Simplify: 0.6 ÷ 0.2

Explanation: To divide decimals, move the decimal point in the divisor to make it a whole number. So, 0.6 ÷ 0.2 = 6 ÷ 2 = 3

Chapter 5: Quadratic Equations

Ques. What is the solution to the quadratic equation x^2 – 5x + 6 = 0?

A) x = 2, x = 3

B) x = 3, x = 2

C) x = 1, x = 6

D) x = 6, x = 1

Ans. A) x = 2, x = 3

Explanation: Factor the quadratic equation x^2 – 5x + 6 = 0 to (x – 2)(x – 3) = 0. So, x = 2 or x = 3.

Ques. Which of the following is a factor of x^2 – 9?

B) (x – 3)

D) (x – 2)

Ans. B) (x – 3)

Explanation: x^2 – 9 factors to (x + 3)(x – 3).

Ques. Solve for x: 2x^2 – 5x – 3 = 0

A) x = -1, x = 3/2

B) x = 3, x = -1/2

C) x = 1, x = -3/2

D) x = -3, x = 1/2

Ans. A) x = -1, x = 3/2

Explanation: Solve 2x^2 – 5x – 3 = 0 using the quadratic formula to get x = -1 or x = 3/2.

Chapter 8: Mensuration

Ques. Find the perimeter of a rectangle with length 8 cm and width 5 cm.

Ans. A) 26 cm

Explanation: Perimeter of a rectangle = 2(length + width) = 2(8 + 5) = 2(13) = 26 cm

Ques. Calculate the area of a circle with radius 4 cm.

Ans. A) 16π cm²

Explanation: Area of a circle = πr^2 = π(4)^2 = 16π cm²

Ques. What is the volume of a cube with side length 3 cm?

Ans. B) 27 cm³

Explanation: Volume of a cube = side^3 = 3^3 = 27 cm³

Chapter 11: Probability

Ques. If a fair six-sided die is rolled, what is the probability of rolling a prime number?

Ans. B) 1/3

Explanation: Prime numbers on a die are 2, 3, and 5. So, probability = 3/6 = 1/2

Ques. A bag contains 4 red, 3 blue, and 2 green marbles. What is the probability of drawing a blue marble?

Ans. B) 3/9

Explanation: Probability of drawing a blue marble = Number of blue marbles / Total number of marbles = 3/9 = 1/3

Ques. If the probability of an event A is 0.4, what is the probability of the complement of A?

Ans. A) 0.6

Explanation : Probability of the complement of A = 1 – Probability of A = 1 – 0.4 = 0.6

Why Practice Class 8 Math MCQs?

The CBSE has introduced more competency-based questions in Class 8 Annual Exams, including MCQs , case studies, and assertion-reasoning. To excel, students must grasp basic Math concepts. Practicing these MCQs is a convenient way to grasp fundamental concepts quickly. Crafted by experts, these MCQs align with the new exam pattern and NCERT book . Using these quizzes is a quick way to learn the important stuff. They’re made by experts to match what you’re studying and the new exam style. By doing these quizzes, you’ll get better at solving problems and feel more confident for your exams.

Make the Most of This Helpful Tool

Don’t miss out on this chance to improve your Math skills and do well in the Class 8 Math Exam 2024 . Use these quizzes to practice and get ready for success. Start practicing today and see your Math skills grow!

Class 8 Maths MCQs FAQs

Is class 8 very important.

Class 8 lays a strong foundation for higher classes, making it crucial for building fundamental knowledge and skills in Mathematics.

Is Class 8 easy or hard?

The difficulty level of Class 8 Mathematics can vary for each student based on their understanding and practice. Consistent effort and practice can make it manageable.

How many hours should a Class 8 student study?

On average, a Class 8 student should aim to study 2-3 hours daily for Mathematics, adjusting based on individual learning pace and requirements.

Is Class 8 exam tough?

The difficulty of Class 8 exams can vary, but with proper preparation and understanding of concepts, students can perform well.

What is most important in Class 8 Maths?

Understanding fundamental concepts like fractions, decimals, algebra, geometry, and problem-solving techniques is crucial in Class 8 Mathematics.

Which is the toughest Class 8 Maths chapter?

The perceived difficulty of chapters can vary among students, but topics like quadratic equations, trigonometry, and probability are often considered challenging.

Is Class 8 Math easy?

Class 8 Mathematics can be challenging for some students due to new concepts and problem-solving methods, but with practice and guidance, it can become more manageable.

What happens if a student fails in Maths in Class 8?

If a student fails in Mathematics in Class 8, they may need to attend remedial classes, seek additional help, and work on improving their understanding to avoid further difficulties in higher classes. It's essential to address the issue promptly and seek support to overcome challenges.

CBSE Class 11th Psychology Syllabus 2024-25: Download PDF for Board Exam

img src="https://img.jagranjosh.com/images/2024/May/752024/cbse-class-11.jpg" width="1200" height="675" />

CBSE Class 11 Psychology Syllabus 2024-25: The Central Board of Secondary Education (CBSE) has officially released the class 11 psychology syllabus. Students can check out the Class 11 Psychology syllabus in this article. The syllabus is well designed with the course related information which will help students to have an overview of the curriculum. Students can check and download their CBSE Class 11 Psychology syllabus and complete curriculum here.

Along with the details of the course content and evaluation scheme, students can also check the question paper design and practical details. The downloadable link for the complete syllabus is also attached in the conclusion of the article. To know more about class 11 Psychology syllabus read the complete article till end.

Also Read: CBSE Class 11 syllabus 2024-25 (All Subjects)

CBSE Class 11 Psychology Syllabus 2024-25: Objectives

To develop appreciation about the human mind and behavior in the context of learners’ immediate society and environment.
To develop in learners an appreciation of the nature of psychological knowledge and its application to various aspects of life.
To enable learners to become perceptive, socially aware and self-reflective.
To facilitate students’ quest for personal growth and effectiveness, and to enable them to become responsive and responsible citizens.

Chapter wise-weightage:

The table below reflects the unit along with the title and mark allocation to the chapters. Refer the table below for more understanding:

CBSE Class 11 Psychology 2024-25 Course Structure

The CBSE Class 11 Psychology subject code is 037. The theory paper consists of 70 marks, with three hours duration. The information below showcases the unit name, chapters, number of periods along with the mark allocation of the chapters. Check out the table below for more detailed understanding:

CBSE Class 11 Psychology 2024-25 Question Paper Design

The theory paper holds 70 marks in total and the duration is three hours

II. Practical: 30 Marks

The practical assessment scheme for Psychology in class 11 is broken down into multiple parameters. Students can view the evaluation criteria and their corresponding marks in the above mentioned table.

CBSE Class 11 Psychology Syllabus 2024-25

Get a PDF download of the latest CBSE Class 11 Psychology curriculum here. The key pointers of this article is syllabus weightage, course overview and practical evaluation scheme . Students can access the direct link to the PDF to download and check the latest update regarding the CBSE Class 11 Psychology syllabus.

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Sample Paper Class 9 Science Cbse
NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom
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CBSE Class 9 Science Chapter 4 Structure Of The Atom Solutions
CBSE Class 9 Science Chapter 4 Structure Of The Atom Solutions

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Class 9 Science Case Study Questions Chapter 4 Structure of Atom
Case Study/Passage Based Questions. The given diagrams show the atomic structures of elements X and Y. Element X and Y could be _ and _ respectively. (a) Be and B (b) C and O. (c) F and N (d) C and N. Show Answer. Valency of elements X and Y are respectively, (a) 4 and 3 (b) 2 and 5. (c) 1 and 4 (d) 3 and 4.
Case Study and Passage Based Questions for Class 9 Science Chapter 4
Case Study Questions for Class 9 Science Chapter 4 Structure of Atom. In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then questions based on it will be asked.
Case Study Questions Class 9 Science
At Case Study Questions there will given a Paragraph. In where some Questions will made on that respective Case Based Study. There will various types of marks will given 1 marks, 2 marks, 3 marks or 4 marks. CBSE Case Study Questions Class 9 Science - Structure of the Atom. CASE 1
Class 9 Science Case Study Questions
The inclusion of case study questions in Class 9 science CBSE is a great way to engage students in critical thinking and problem-solving. By working through real-world scenarios, Class 9 Science students will be better prepared to tackle challenges they may face in their future studies and careers.
Case Study Questions of Chapter 4 Structure of Atom PDF Download » CBSE
Show Answer. The fractional atomic masses of elements are due to the existence of. (a) isotopes having different masses. (b) diagonal relationship. (c) equal number of electrons and protons. (d) none of these. Show Answer. Hope the information shed above regarding Case Study and Passage Based Questions for Class 9 Science Chapter 4 Structure of ...
Case Study Questions of Class 9 Science PDF Download
by experts. Download PDF Case Study Questions of Class 9 Science to prepare for the upcoming CBSE Class 9 Exams Exam 2023-24. With the help of our well-trained and experienced faculty, we provide solved examples and detailed explanations for the recently added Class 9 Science case study questions. Case study questions are based on real or ...
Important Questions for CBSE Class 9 Science Chapter 4
There are a couple of components inside an atom according to Chapter 4 of Class 9 Science. Atoms are the fundamental components of matter. The proton, neutron, and electron are the three subatomic particles that make up the smallest unit of matter. Protons, neutrons, and electrons make up the basic structure of an atom.
NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom
The exercises in Chapter 4 of NCERT Solutions for Class 9 Science are. Number 4.1 - Charged particles in matter 2 Questions ( 2 short) Number 4.2 - The structure of an atom 4 Questions ( 4 short) Number 4.2.4 - Neutrons 2 Questions ( 2 short) Number 4.3 - How are electrons distributed.
CBSE Class 9 Science Important Case Study Questions with Answers for
CBSE Class 9 Science Sample Paper with Solutions for Term 2 Exam 2022. Check some of the important case study questions below: Q. Read the following and answer the questions: A student was asked ...
NCERT Solutions for Class 9 Science Chapter 4 Structure of ...
23rd December 2023. NCERT Solutions for Class 9 Science (Chemistry) Chapter 4 Structure of the Atom provides detailed answers for all in-text and exercise Questions. These solutions contain an in-depth explanation of each topic involved in the chapter. All these solutions are prepared by expert teachers and updated for the current academic session.
NCERT Solutions for Class 9 Science Chapter 4 Structure of Atom
Answer: (i) Atomic number: The atomic number of an element is equal to the number of protons in the nucleus of its atom. e.g., Oxygen has 6 protons hence atomic no. = 6. (ii) Mass number: The mass number of an atom is equal to the number of protons and neutrons in its nucleus.
NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom
Answer: Mass number of helium is equal to its atomic mass but has no units. ∴ Mass number (A) of helium = 4. No. of protons in the nucleus = 2 Atomic number (Z) of the element = 2. No. of neutrons (n) = A - Z = 4 - 2 = 2. Question 9. Write the distribution of electrons in carbon and sodium atoms.
Category: Case Study Questions for Class 9 Science
February 4, 2022 February 4, 2022 Physics Gurukul Leave a Comment on Case Study and Passage Based Questions for Class 9 Science Chapter 4 Structure of Atom. ... CBSE Case Study Questions; Problems Based on Graphical Representation of Motion for Class 9 Science; Explore Products. CBSE Board. ICSE Board. NCERT. CUET. NEET. JEE Main.
Structure of the Atom Class 9 Extra Questions Science Chapter 4
An atom 'M' of an element reacts with oxygen to form M 2 O 3. Calculate the valency of the element 'M'. Answer: Two atoms of element 'M' combine with 3 atoms of oxygen. ∴ Number of oxygen atoms combining with one atom of element 'M' = 3 2. Therefore, the valency of element 'M' = 3 2 × 2 = 3. Question 4.
CBSE Class 9 Case Study Questions
Maths Case-Study Qs. Maths Case-Study Qs. VIEW ALL. TopperLearning offers an online platform to access case studies for CBSE Class 9 students. Explore your analytical and problem-solving skills by solving case studies with our expert guidance. Get started today!
NCERT Solutions for Class 9 Science Updated for 2023-24 Exams
NCERT Solutions for Class 9 Science, latest edition, is available in PDF format, which can easily be downloaded. All questions are solved in detail and given here in a chapter-wise format. Visit BYJU'S to download the free NCERT Solutions Class 9 Science 2023-24 PDF.
Important Questions for CBSE Class 9 Science (2024-25)
Ans: There are a total of 15 chapters in CBSE Class 9 Science syllabus. The first part of the syllabus consists of chapter 1: matters in our surroundings, chapter 2: Is matter around us pure, chapter 3: atoms and molecules, chapter 4: structure of the atoms, chapter 5: the fundamental unit of life, chapter 6: tissues and chapter 7: diversity in living organisms.
Case Study Questions Class 9 Science Matter in our Surroundings
At Case Study Questions there will given a Paragraph. In where some Questions will made on that respective Case Based Study. There will various types of marks will given 1 marks, 2 marks, 3 marks or 4 marks. CBSE Case Study Questions Class 9 Science - Matter in our Surroundings Case Study 1: 1.) A matter is anything that has mass and occupies ...
Case Study Questions Class 9 Science
CBSE Case Study Questions Class 9 Science - The Fundamental Unit of Life. CASE 1. All living Organisms are made up of cells and these cells perform all the functions essential for the survival of the Organism eg. Respiration, digestion, excretion etc. In Unicellular organisms, a single cell carries out all these functions and in multicellular ...
NCERT Exemplar Class 9 Science Solutions for Chapter 4
NCERT Exemplar Solutions for Class 9 Science Chapter 4 Structure of Atom help students to learn the concepts thoroughly discussed in CBSE Class 9 Structure of Atom. Referring to NCERT Exemplar aids in laying a strong foundation for students' future studies. Topics involved here are the basics and are helpful throughout their life.
Tribals, Dikus and the Vision of a Golden Age Class 8 Assertion Reason
So, to help students we have created chapterwise assertion reason questions for class 8 social science. In this article, you will find assertion reason questions for CBSE Class 8 Social Science History Chapter 4 Tribals, Dikus and the Vision of a Golden Age. It is a part of Assertion Reason Questions for CBSE Class 8 Social Science Series.
CBSE Important Questions for Class 9 Science
Here, we have provided the chapter-wise CBSE important questions for Class 9 Science. These questions are created from an exam perspective and are most likely to be asked in the exam. Class 9 Science Important Questions Chapter 1 - Matter in Our Surroundings. Class 9 Science Important Questions Chapter 2 - Is Matter Around Us Pure.
Case Study and Passage Based Questions for Class 9 Science Chapter 9
Last modified on:2 years agoReading Time:4MinutesCase Study Questions for Class 9 Science Chapter 4 Structure of Atom In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then…
CBSE Class 8 Maths MCQs Chapter-Wise with Answers
Get ready for Class 8 Math Multiple Choice Questions (MCQs) organized by chapter from 1 to 16, complete with answers. These MCQs follow the NCERT Solutions curriculum and match the latest CBSE syllabus for class 8. By practicing these questions, students can efficiently review each chapter's topics and prepare well for their final exams.
CBSE Class 11th Psychology Syllabus 2024-25: Download PDF for ...
Download CBSE Class 11 Psychology Syllabus 2024-25 PDF. Get a PDF download of the latest CBSE Class 11 Psychology curriculum here. The key pointers of this article is syllabus weightage, course ...

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From Trade to Territory Class 8 Assertion Reason CBSE History Chapter 2

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Frequently Asked Questions (FAQs) on Tribals, Dikus and the Vision of a Golden Age Class 8 Assertion Reason

Q2: How do Assertion-Reason questions differ from other question types?

Q3: What steps should I follow to correctly answer Assertion-Reason questions?

Q4: What options are typically provided for Assertion-Reason questions?

Q5: What should I check to determine if the Reason correctly explains the Assertion?

Q6: How can I improve my skills in answering Assertion-Reason questions?

Q7: What are common mistakes to avoid when answering Assertion-Reason questions?

Q8: How important is contextual understanding in Assertion-Reason questions?

Q9: What resources can help me practice Assertion-Reason questions?

Q10: What are the important keywords for CBSE Class 8 Tribals, Dikus and the Vision of a Golden Age?

Q11: What are the important dates that should be remembered for CBSE Class 8 Tribals, Dikus and the Vision of a Golden Age?

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Case Study and Passage Based Questions for Class 9 Science Chapter 13 Why Do We Fall Ill

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