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CBSE Class 10 Science Chapter Wise Important Case Study Questions

Chapter wise important case study questions cbse class 10 science: cbse class 10 science board exam 2024 is just around the corner and students are working hard to score maximum marks. check these case study questions from class 10 science to ace your examination this year also download the solutions from the pdf attached towards the end. .

CBSE Class 10 Science Chapter Wise Important Case Study Questions: While the CBSE Board exam for Class 10 students are ongoing, the CBSE Class 10 Science board exam 2024 is to be held on March 2, 2024. With the exams just a  few days away, CBSE Class 10th Board exam candidates are rushing to prepare the remaining syllabus, practising their weak portions, trying to revise the important questions from the past year papers, practise questions, etc. 

Why are CBSE Class 10 Science Case Study Questions Important?

• Section A : 20 Multiple Choice Questions (MCQs) carrying 1 mark each.  
• Section B : 6 Very Short Answer type questions carrying 2 marks each. Answers to these questions should be in the range of 30 to 50 words.  
• Section C : 7 Short Answer type questions carrying 3 marks each. Answers to these questions should be in the range of 50 to 80 words.  
• Section D : 3 Long Answer type questions carrying 5 marks each. Answers to these questions should be in the range of 80 to 120 words.
• Section E : 3 Case Based/ Source Based units of assessment (4 marks each) with sub-parts.  

How to solve case study questions in CBSE Class 10 Science?

• Read the case given and the associated questions carefully.
• Read the questions attentively and analyse what they are asking.
• Apply your subject knowledge and theories in the given case to decide what the correct answers should be.

1.A chemical reaction is a representation of chemical change in terms of symbols and formulae of reactants and products. There are various types of chemical reactions like combination, decomposition, displacement, double displacement, oxidation and reduction reactions. Reactions in which heat is released along with the formation of products are called exothermic chemical reactions. All combustion reactions are exothermic reactions.

(i) The massive force that pushes the rocket forward through space is generated due to the

(a) combination reaction

(b) decomposition reaction

(c) displacement reaction

(d) double displacement reaction

(ii) A white salt on heating decomposes to give brown fumes and yellow residue is left behind. The yellow residue left is of

(a) lead nitrate

(b) nitrogen oxide

(c) lead oxide

(d) oxygen gas

(iii) Which of the following reactions represents a combination reaction?

(a) CaO (s) + H2O (l) → Ca (OH)2 (aq)

(b) CaCO3 (s) → CaO (s) + CO2(g)

(c) Zn(s) + CuSO4 (aq) → ZnSO4 (aq) + Cu(s)

(d) 2FeSO4(s) → Fe2O3 (s) +SO2(g) + SO3(g)

(iv) Complete the following statements by choosing correct type of reaction for X and Y.

Statement 1: The heating of lead nitrate is an example of ‘X’ reaction.

Statement 2: The burning of magnesium is an example of ‘Y’ reaction.

(a)X-Combination,Y-Decomposition

(b)X-Decomposition,Y-Combination

(c)X-Combination,Y-Displacement

(d) X- Displacement, Y-Decomposition

2.The earlier concept of oxidation and reduction is based on the addition or removal of oxygen or hydrogen elements so, in terms of oxygen and hydrogen, oxidation is addition of oxygen to a substance and removal of hydrogen from a substance. On the other hand, reduction is addition of hydrogen to a substance and removal of oxygen from a substance. The substance which gives oxygen to another substance or removes hydrogen from another substance in an oxidation reaction is known as oxidising agent, while the substance which gives hydrogen to another substance or removes oxygen from another substance in a reduction reaction is known as reducing agent. For example, 

(i) A redox reaction is one in which

(a) both the substances are reduced

(b) both the substances are oxidised

(c) an acid is neutralised by the base

(d) one substance is oxidised while the other is reduced.

(ii) In the reaction, H2S+Cl2⟶S+2HCl

(a) H2S is the reducing agent. 

(b) HCl is the oxidising agent.

(c) H2S is the oxidising agent. 

(d) Cl2 is the reducing agent.

(iii) Which of the following processes does not involve either oxidation or reduction?

(a) Formation of slaked lime from quicklime.

(b) Heating mercuric oxide.

(c) Formation of manganese chloride from manganese oxide (MnO2).

(d) Formation of zinc from zinc blende.

(iv) Mg+CuO⟶MgO+Cu

Which of the following is wrong relating to the above reaction?

(a) CuO gets reduced

(b) Mg gets oxidised.

(c) CuO gets oxidised. 

(d) It is a redox reaction.

3.A copper vessel gets tarnished due to formation of an oxide layer on its surface. On rubbing lemon on the vessel, the surface is cleaned, and the vessel begins to shine again. This is due to the fact that which reacts with the acid present in lemon to form a salt which is washed away with water. As a result, the layer of copper oxide is removed from the surface of the vessel and the shining surface is exposed.

1.Which of the following acids is present in lemon?

(a) Formic acid

(b) Acetic acid

(c) Citric acid

(d) Hydrochloric acid

2.The nature of copper oxide is

d) amphoteric

3.Name the salt formed in the above reaction

a) copper carbonate

b) copper chloride

c)copper citrate

d) copper citrate

4.The phenomenon of copper getting tarnished is

a) corrosion

b) rancidity

c) displacement

d)none of these

4.Metals as we know, are very useful in all fields, industries in particular. Non-metals are no less in any way. Oxygen present in air is essential for breathing as well as for combustion. Non-metals form a large number of compounds which are extremely useful, e.g., ammonia, nitric acid, sulphuric acid, etc. Non-metals are found to exist in three states of matter. Only solid non-metals are expected to be hard however, they have low density and are brittle. They usually have low melting and boiling points and are poor conductors of electricity.

i.____________ is a non-metal but is lustrous

A.Phosphorus

ii.Which of the following is known as 'King of chemicals'?

C. Sulphuric acid

D. Nitric acid

iii.Which of the following non-metals is a liquid?

iv.Hydrogen is used

A.for the synthesis of ammonia

B. for the synthesis of methyl alcohol

C.nitrogenous fertilizers

D. all of these

5.Nisha observed that the bottoms of cooking utensils were turning black in colour while the flame of her stove was yellow in colour. Her daughter suggested cleaning the air holes of the stove to get a clean, blue flame. She also told her mother that this would prevent the fuel from getting wasted.

a) Identify the reasons behind the sooty flame arising from the stove.

b) Can you distinguish between saturated and unsaturated compounds by burning them? Justify your answer.

c) Why do you think the colour of the flame turns blue once the air holes of the stove are cleaned?

6.Blood transport food, Oxygen and waste materials in our bodies. It consists of plasma as a fluid medium. A pumping organ [heart] is required to push the blood around the body. The blood flows through the chambers of the heart in a specific manner and direction. While flowing throughout the body, blood exerts a pressure against the wall or a vessel.

• Pulmonary artery
• Pulmonary vein
• Very narrow and have high resistance
• Much wide and have low resistance
• Very narrow and have low resistance
• Much wide and have high resistance
• It is a hollow muscular organ
• It is four chambered having three auricles and one ventricle.
• It has different chambers to prevent O2 rich blood from mixing with the blood containing CO2
• Both A & C
• Blood = Plasma + RBC + WBC + Platelets
• Plasma = Blood – RBC
• Lymph = Plasma + RBC
• Serum = Plasma + RBC + WBC

7.A brain is displayed at the Allen Institute for Brain Science. The human brain is a 3-pound (1.4-kilogram) mass of jelly-like fats and tissues—yet it's the most complex of all known living structures The human brain is more complex than any other known structure in the universe. Weighing in at three pounds, on average, this spongy mass of fat and protein is made up of two overarching types of cells—called glia and neurons— and it contains many billions of each. Neurons are notable for their branch-like projections called axons and dendrites, which gather and transmit electrochemical signals. Different types of glial cells provide physical protection to neurons and help keep them, and the brain, healthy. Together, this complex network of cells gives rise to every aspect of our shared humanity. We could not breathe, play, love, or remember without the brain.

1)Animals such as elephants, dolphins, and whales actually have larger brains, but humans have the most developed cerebrum. It's packed to capacity inside our skulls and is highly folded. Why our brain is highly folded?

• b) Learning

3)Which among these protects our brain?

a)Neurotransmitter

b) Cerebrospinal fluid

d) Grey matter

4.Ram was studying in his room. Suddenly he smells something burning and sees smoke in the room. He rushes out of the room immediately. Was Ram’s action voluntary or involuntary? Why?

8.Preeti is very fond of gardening. She has different flowering plants in her garden. One day a few naughty children entered her garden and plucked many leaves of Bryophyllum plant and threw them here and there in the garden. After few days, Preeti observed that new Bryophyllum plants were coming out from the leaves which fell on the ground.

1.What does the incident sited in the paragraph indicate?

(a). Bryophyllum leaves have special buds that germinate to give rise to new plant.

(b). Bryophyllum can propagate vegetatively through leaves.

(c). Bryophyllum is a flowering plant that reproduces only asexually

(d). Both (a) and (b).

2.Which of the following plants can propagate vegetatively through leaves like Bryophyllum?

3.Do you think any other vegetative part of Bryophyllum can help in propagation? If yes, then which part?

(c) Flowers

4.Which of the following plant is artificially propagated (vegetatively) by stem cuttings in horticultural practices?

(b)Snakeplant

(d)Water hyacinth

9.The growing size of the human population is a cause of concern for all people. The rate of birth and death in a given population will determine its size. Reproduction is the process by which organisms increase their population. The process of sexual maturation for reproduction is gradual and takes place while general body growth is still going on. Some degree of sexual maturation does not necessarily mean that the mind or body is ready for sexual acts or for having and bringing up children. Various contraceptive devices are being used by human beings to control the size of the population.

1) What are common signs of sexual maturation in boys?

a) Broadening of shoulders

b) Development of mammary glands

c) Broadening of waist

d) High pitch of voice

2) Common sign of sexual maturation in girls is

a) Low pitch voice

b) Appearance of moustache and beard

c) Development of mammary glands

d) Broadening of shoulders

3) Which contraceptive method changes the hormonal balance of the body?

b) Diaphragms

c) Oral pills

d) Both a) and b)

4) What should be maintained for healthy society?

a) Rate of birth and death rate

b) Male and female sex ratio

c) Child sex ratio

d) None of these

10.Pea plants can have smooth seeds or wrinkled seeds. One of the phenotypes is completely dominant over the other. A farmer decides to pollinate one flower of a plant with smooth seeds using pollen from a plant with wrinkled seeds. The resulting pea pod has all smooth seeds.

i) Which of the following conclusions can be drawn?

(1) The allele for smooth seeds is dominated over that of wrinkled seeds.

(2) The plant with smooth seeds is heterozygous.

(3) The plant with wrinkled seeds is homozygous.

(b) 1 and 2 only

(c) 1 and 3 only

(d) 1, 2 and 3

ii) Which of the following crosses will give smooth and wrinkled seeds in same proportion?

(a) RR X rr

(b) Rr X rr

(d) rr X rr

iii) Which of the following cross can be used to determine the genotype of a plant with dominant phenotype?

(a) RR X RR

(b) Rr X Rr

(c) Rr X RR

(d) RR X rr

iv) On crossing of two heterozygous smooth seeded plants (Rr), a total of 1000 plants were obtained in F1 generation. What will be the respective number of smooth and wrinkled seeds obtained in F1 generation?

(a) 750, 250

(b) 500, 500

(C) 800, 200

(d) 950, 50

11.Food chains are very important for the survival of most species.When only one element is removed from the food chain it can result in extinction of a species in some cases.The foundation of the food chain consists of primary producers.Primary producers or autotrophs,can use either solar energy or chemical energy to create complex organic compounds,whereas species at higher trophic levels cannot and so must consume producers or other life that itself consumes producers. Because the sun’s light is necessary for photosynthesis,most life could not exist if the sun disappeared.Even so,it has recently been discovered that there are some forms of life,chemotrophs,that appear to gain all their metabolic energy from chemosynthesis driven by hydrothermal vents,thus showing that some life may not require solar energy to thrive.

1.If 10,000 J solar energy falls on green plants in a terrestrial ecosystem,what percentage of solar energy will be converted into food energy?

(d)It will depend on the type of the terrestrial plant

2.Matter and energy are two fundamental inputs of an ecosystem. Movement of

(a)Energy is by directional and matter is repeatedly circulating

(b)Energy is repeatedly circulating and matter is unidirectional

(c)Energy is unidirectional and matter is repeatedly circulating

(d)Energy is multidirectional and matter is bidirectional

3.Raj is eating curd/yoghurt. For this food intake in a food chain he should be considered as occupying

(a)First trophic level

(b)Second trophic level

(c)Third trophic level

(d)Fourth trophic level

4.Which of the following, limits the number of trophic levels in a food chain

(a)Decrease in energy at higher trophic levels

(b)Less availability of food

(c)Polluted air

5.The decomposers are not included in the food chain. The correct reason for the same is because decomposers

(a) Act at every trophic level at the food chain

(b) Do not breakdown organic compounds

(c) Convert organic material to inorganic forms

(d) Release enzymes outside their body to convert organic material to inorganic forms

12.Shyam participated in a group discussion in his inter school competition on the practical application of light and was very happy to win an award for his school. That very evening his father gave treat to celebrate Shyam’s win. Shyam while sitting saw an image of a person sitting at his backside in his curved plate and could see that person’s mobile drop in the flower bed. Person was not aware until Shyam went and informed him. He thanked Shyam for his clever move.

a)From which side of his plate Shyam observed the incident –

i)outward curved

ii)inward curved

iii)plane surface

b)Part of plate from which Shyam observed the incident acted like a-

i)concave mirror

ii)convex mirror

iii)plane mirror

c)The nature of the size of the image formed in above situation is –

i)real, inverted and magnified

ii)same size , laterally inverted

iii)virtual, erect and diminished

iv)real , inverted and diminished

d)Magnification of the image formed by convex mirror is –

more than 1

iii)equal to 1

iv)less than 1

• The location of image formed by a convex lens when the object is placed at infinity is

(a) at focus

(c) at optical center

• When the object is placed at the focus of concave lens, the image formed is

(a)real and smaller

(b) virtual and smaller

(c) virtual and inverted

• The size of image formed by a convex lens when the object is placed at the focus ofconvex lens is

(a) highly magnified

(b) point in size

• When the object is placed at 2F in front of convex lens, the location of image is

(b) between F and optical center

(c) at infinity

(d) none of the above

14.One of the wires in domestic circuits supply, usually with a red insulation cover, is called live wire. with black insulation is called neutral wire. The earth wire, which has insulation of green colour, is usually connected to a metal plate deep in the earth near the house appliances that has a metallic body. Overloading contact, in such a situation the current in the circuit abruptly increases. circuit prevents damage to the appliances and the circuit due to overloading.

1 When do we say that an electrical appliance

2 Mention the function of earth wire in electrical line

3 How is an electric fuse connected in a domestic circuit?

4 When overloading and short circuiting are said to occur?

5 What is a live wire?

15.Light of all the colours travel at the same speed in vacuum for all wavelengths. But in any transparent medium(glass or water), the light of different colours travels at different speeds for different wavelengths, which means that the refractive index of a particular medium is different for different wavelengths. As there is a difference in their speeds, the light of different colours bend through different angles. The speed of violet colour is maximum and the speed of red colour is minimum in glass so, the red light deviates least and violet colour deviates most. Hence, higher the wavelength of a colour of light, smaller the refractive index and less is the bending of light.

(i)Which of the following statements is correct regarding the propagation of Light of different colours of white light in air?

(a) Red light moves fastest.

(b) Blue light moves faster than green light.

(c) All the colours of the white light move with the same speed.

(d) Yellow light moves with the mean speed as that of the red and the violet light.

(ii)Which of the following is the correct order of wavelength?

(a) Red> Green> Yellow

(b) Red> Violet> Green

(c) Yellow> Green> Violet

(d) Red> Yellow> Orange

(iii)Which of the following is the correct order of speed of light in glass?

(a) Red> Green> Blue

(b) Blue> Green> Red

(c) Violet> Red> Green

(d) Green> Red> Blue

(iv)Which colour has maximum frequency?

16.The region around a magnet where magnetism acts is represented by the magnetic field.The force of magnetism is due to moving charge or some magnetic material. Like stationary charges produce an electric field proportional to the magnitude of charge, moving charges produce magnetic fields proportional to the current. In other words, a current carrying conductor produces a magnetic field around it. The subatomic particles in the conductor, like the electrons moving in atomic orbitals, are responsible for the production of magnetic fields. The magnetic field lines around a straight conductor (straight wire) carrying current are concentric circles whose centres lie on the wire.

1)The magnetic field associated with a current carrying straight conductor is in anti- clockwise direction. If the conductor was held horizontally along east west direction,what is the direction of current through it?

2)Name and state the rule applied to determine the direction of magnetic field in a straight current carrying conductor.

3)Ramus performs an experiment to study the magnetic effect of current around a current carrying straight conductor with the help of a magnetic compass. He reports that

a)The degree of deflection of magnetic compass increases when the compass is moved away from the conductor.

b)The degree of deflection of the magnetic compass increases when the current through the conductor is increased.

Which of the above observations of the student appears to be wrong and why?

Case Study Questions Class 10 Science CBSE Chapter Wise PDF

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Case Study Questions Class 10 Science

Table of Contents

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Download the app to get CBSE Sample Papers 2023-24, NCERT Solutions (Revised), Most Important Questions, Previous Year Question Bank, Mock Tests, and Detailed Notes.

Download Case study questions for CBSE class 10 Science in PDF format from the myCBSEguide App . We have the new pattern case study-based questions for free download. Class 10 Science case study questions

This article will guide you through:

What are case study questions?

• Sample Papers with Case Study questions
• Class 10 Science Case Study question examples
• How to get case-based questions for free?
• How to attempt the case-based questions in Science?

Questions based on case studies are some real-life examples. The questions are asked based on a given paragraph i.e. Case Study.  Usually, 4-5 questions are asked on the basis of the given passage. In most cases, these are either MCQs or assertion & reason type questions. Let’s take an example to understand. There is one paragraph on how nitrogen is generated in the atmosphere. On the basis of this paragraph, the board asks a few objective-type questions. In other words, it is very similar to the unseen passages given in language papers. But the real cases may be different. So, read this article till the end to understand it thoroughly.

What is CBE?

CBSE stands for competency-based education. The case study questions are part of this CBE. The purpose of CBE is to demonstrate the learning outcomes and attain proficiency in particular competencies.

Questions on Real-life Situations

As discussed the case study questions are based on real-life situations. Especially for grade 10 science, it is very essential to have the practical knowledge to solve such questions. Here on the myCBSEguide app, we have given many such case study paragraphs that are directly related to real-life implications of the knowledge.

Sample Papers with Case Study Questions

Class 10 Science Sample Papers with case study questions are available in the myCBSEguide App . There are 4 such questions (Q.No.17 to 20) in the CBSE model question paper. If you analyze the format, you will find that the MCQs are very easy to answer. So, we suggest you, read the given paragraph carefully and then start answering the questions. In some cases, you will find that the question is not asked directly from the passage but is based on the concept that is discussed there. That’s why it is very much important to understand the background of the case study paragraph.

CBSE Case Study Sample Papers

You can download CBSE case study sample papers from the myCBSEguide App or Student Dashboard. Here is the direct link to access it.

Case Study Question Bank

As we mentioned that case study questions are coming in your exams for the last few years. You can get them in all previous year question papers issued by CBSE for class 1o Science. Here is the direct link to get them too.

Class 10 Science Case Study Question Examples

As you have already gone through the four questions provided in the CBSE model question paper , we are proving you with other examples of the case-based questions in the CBSE class 10 Science. If you wish to get similar questions, you can download the myCBSEguide App and access the Sample question papers with case study-type questions.

Case-based Question -1

Read the following and answer any four questions: Salt of a strong acid and strong base is neutral with a pH value of 7. NaCl common salt is formed by a combination of hydrochloride and sodium hydroxide solution. This is the salt that is used in food. Some salt is called rock salt bed of rack salt was formed when seas of bygone ages dried up. The common salt thus obtained is an important raw material for various materials of daily use, such as sodium hydroxide, baking soda, washing soda, and bleaching powder.

• Phosphoric acid
• Carbonic acid
• Hydrochloric acid
• Sulphuric acid
• Blue vitriol
• Washing soda
• Baking soda
• Bleaching powder

Case-based Question -2

• V 1  + V 2  + V 3
• V 1  – V 2  +V 2
• None of these
• same at every point of the circuit
• different at every point of the circuit
• can not be determined
• 20 3 Ω 203Ω
• 15 2 Ω 152Ω

Case-based Question -3

• pure strips
• impure copper
• refined copper
• none of these
• insoluble impurities
• soluble impurities
• impure metal
• bottom of cathode
• bottom of anode

How to Attempt the Case-Based Questions in Science?

Before answering this question, let’s read the text given in question number 17 of the CBSE Model Question Paper.

All living cells require energy for various activities. This energy is available by the breakdown of simple carbohydrates either using oxygen or without using oxygen.

See, there are only two sentences and CBSE is asking you 5 questions based on these two sentences. Now let’s check the first questions given there.

Energy in the case of higher plants and animals is obtained by a) Breathing b) Tissue respiration c) Organ respiration d) Digestion of food

Now let us know if you can relate the question to the paragraph directly. The two sentences are about energy and how it is obtained. But neither the question nor the options have any similar text in the paragraph.

So the conclusion is, in most cases, you will not get direct answers from the passage. You will get only an idea about the concept. If you know it, you can answer it but reading the paragraph even 100 times is not going to help you.

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CBSE Class 10th – SCIENCE: Chapterwise Case Study Question & Solution

Case study questions provide a practical and real-life context for applying scientific concepts and principles. These questions require you to analyze a given scenario, identify relevant information, and utilize your scientific knowledge to solve problems or draw conclusions. Case study questions assess your ability to think critically, make connections, and apply scientific principles in a practical setting.

Chapterwise Case Study Questions for Class 10 Science

To support your preparation for Class 10 Science examinations, we have created a comprehensive PDF resource containing a collection of case study questions designed specifically for this subject. This PDF includes a variety of case studies covering different topics in Physics, Chemistry, and Biology. It will provide you with ample practice opportunities to enhance your analytical and problem-solving skills.

• Case Study Questions for Chapter 1 Chemical Reactions and Equations
• Case Study Questions for Chapter 2 Acids, Bases, and Salts
• Case Study Questions for Chapter 3 Metals and Non-Metals
• Case Study Questions for Chapter 4 Carbon and Its Compounds
• Case Study Questions for Chapter 5 Periodic Classification of elements
• Case Study Questions for Chapter 6 Life Processes
• Case Study Questions for Chapter 7 Control and Coordination
• Case Study Questions for Chapter 8 How do organisms reproduce?
• Case Study Questions for Chapter 9 Heredity and Evolution
• Case Study Questions for Chapter 10 Light reflection and refraction
• Case Study Questions for Chapter 11 Human eye and colorful world
• Case Study Questions for Chapter 12 Electricity
• Case Study Questions for Chapter 13 Magnetic effects of current
• Case Study Questions for Chapter 15 Our Environment

The above  Case studies for Class 10 Science will help you to boost your scores as Case Study questions have been coming in your examinations. These CBSE Class 10 Science Case Studies have been developed by experienced teachers of schools.studyrate.in for the benefit of Class 10 students.

• Class 10th Maths Case Study Questions

Benefits of Case Study Questions

Engaging with case study questions in Class 10 Science offers several benefits. Let’s explore some of them:

• Real-life application: Case study questions allow you to apply scientific concepts to real-life situations, enhancing your understanding of their practical relevance.
• Critical thinking skills: Analyzing case studies promotes critical thinking by challenging you to evaluate information, identify patterns, and draw logical conclusions.
• Problem-solving abilities: Case study questions require you to identify problems, propose solutions, and make informed decisions based on scientific evidence.
• Holistic learning: By examining different aspects of a case, you gain a broader perspective on scientific concepts and their interconnections.
• Preparation for higher education: Case study questions prepare you for future academic pursuits by developing skills necessary for scientific research and analysis.

Understanding the Structure of Case Study Questions

Case study questions typically present a scenario or a problem related to a scientific concept. The questions may require you to analyze data, interpret graphs, or propose solutions based on the given information. It is important to read the case study carefully, identify key details, and understand the context before attempting to answer the questions.

Tips for Analyzing and Answering Case Study Questions

To effectively analyze and answer case study questions, consider the following tips:

• Read the case study thoroughly: Take your time to understand the scenario, paying attention to key details and any scientific concepts mentioned.
• Identify the problem or objective: Determine the main question or objective that the case study aims to address. This will guide your analysis and help you stay focused.
• Break down the questions: Carefully read each question and break it down into smaller parts. Identify the specific information or data required to answer each question accurately.
• Apply scientific knowledge: Utilize your understanding of scientific principles and concepts to analyze the case study. Make connections between the given information and relevant scientific theories.
• Support your answers: Whenever possible, support your answers with scientific evidence or reasoning. Refer to specific data, graphs, or concepts from the case study to justify your conclusions.

Subject-wise Approach to Case Study Questions

Let’s explore how to approach case study questions in the subjects of Physics, Chemistry, and Biology.

In Physics case study questions, focus on understanding the principles and laws governing the given scenario. Analyze the data provided and apply relevant formulas and concepts to solve the problem. Consider factors such as motion, forces, energy, and electrical circuits, depending on the context of the case study.

Chemistry case study questions often involve analyzing chemical reactions, properties of substances, or experimental data. Pay attention to the details of the case study, such as reactants, products, conditions, and observations. Apply your knowledge of chemical reactions, bonding, and periodic trends to interpret and solve the problem.

Biology case study questions revolve around biological processes, organisms, and ecological relationships. Analyze the provided information, such as species interactions, environmental factors, or experimental results. Apply your understanding of biological concepts, such as genetics, evolution, ecosystems, and cellular processes, to address the questions effectively.

Importance of Practicing Case Study Questions

Practicing case study questions in Class 10 Science is crucial for several reasons:

• Application of knowledge: Case study questions enable you to apply scientific knowledge to real-life situations, enhancing your understanding and practical skills.
• Analytical thinking: Regular practice of case study questions hones your analytical thinking skills by challenging you to analyze complex scenarios and make informed decisions.
• Comprehensive understanding: Engaging with case studies offers a holistic understanding of scientific concepts, allowing you to grasp their practical implications and interconnections.
• Exam preparation: Practicing case study questions familiarizes you with the question patterns and formats commonly seen in Class 10 Science examinations, boosting your confidence and performance.

Case study questions offer a valuable opportunity to apply scientific knowledge in practical contexts. By engaging with these questions, you can develop critical thinking, problem-solving, and analytical skills necessary for success in Class 10 Science. Remember to carefully analyze the case study, apply your scientific understanding, and justify your answers with relevant evidence. Regular practice of case study questions will greatly enhance your overall performance in examinations.

Where can I find Class 10 Science case study questions?

You can download a comprehensive PDF resource containing Class 10 Science case study questions from schools.studyrate.in This resource is specifically designed to provide you with ample practice material.

Why is practicing case study questions important for exam preparation?

Regular practice of case study questions enhances your ability to apply scientific knowledge in practical contexts, improving your analytical thinking and problem-solving abilities. This ultimately contributes to better performance in Class 10 Science examinations.

How should I approach Class 10 Science case study questions?

Read the case study carefully, identify the problem or objective, and analyze the given information. Apply your scientific knowledge to address the questions and support your answers with relevant evidence.

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CBSE Class 10th - SCIENCE : Chapterwise Case Study Question & Solution

In board exams, students will find the questions based on assertion and reasoning. Also, there will be a few questions based on case studies. In that, a paragraph will be given, and then the MCQ questions based on it will be asked. For Science subjects, there would be 5 case-based sub-parts questions, wherein a student has to attempt 4 sub-part questions.

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Class 10 Science: Case Study Chapter 10 Light Reflection and Refraction PDF Download

In CBSE Class 10 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.

Here we are providing you with Class 10 Science Chapter 10 Light Reflection and Refraction Case Study Questions, by practicing these Case Study and Passage Based Questions will help you in your Class 10th Board Exam.

Case Study Chapter 10 Light Reflection and Refraction

Here, we have provided case-based/passage-based questions for Class 10 Science  Chapter 10 Light Reflection and Refraction

Case Study/Passage-Based Questions

Question 1:

The spherical mirror forms different types of images when the object is placed at different locations. When the image is formed on the screen, the image is real and when the image does not form on-screen, the image is virtual. When the two reflected rays meet actually, the image is real and when they appear to meet, the image is virtual. A concave mirror always forms a real and inverted image for different positions of the object. But if the object is placed between the focus and pole, the image formed is virtual and erect. A convex mirror always forms a virtual, erect, and diminished image. A concave mirror is used as a doctor’s head mirror to focus light on body parts like eyes, ears, nose, etc., to be examined because it can form erect and magnified images of the object. The convex mirror is used as a rear view mirror in automobiles because it can form a small and erect image of an object.

(i) When an object is placed at the center of curvature of a concave mirror, the image formed is

Answer: (c) same size as that of the object

(ii) No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be

Answer: (d): The image is erect in a plane mirror and also in a convex mirror, for all positions of the object.

(iii) A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.

Answer: (c) : As the image of head is bigger, the upper portion of magic mirror is concave. The middle portion of the image is of same size, so, middle portion of magic mirror is plane. Now, the image of legs looks smaller, therefore, the lower portion of magic mirror is convex.

(iv) To get an image larger than the object, one can use (a) convex mirror but not a concave mirror (b) a concave mirror but not a convex mirror (c) either a convex mirror or a concave mirror (d) a plane mirror.

Answer: (b) a concave mirror but not a convex mirror

(v) A convex mirror has wider field of view because (a) the image formed is much smaller than the object and large number of images can be seen (b) the image formed is much closer to the mirror (c) both (a) and (b) (d) none of these.

Answer: (c) both (a) and (b)

Question 2:

The lenses form different types of images when objects are placed at different locations. When a ray is incident parallel to the principal axis, then after refraction, it passes through the focus or appears to come from the focus.

When a ray goes through the optical center of the lens, it passes without any deviation. If the object is placed between the focus and the optical center of the convex lens, an erect and magnified image is formed.

As the object is brought closer to the convex lens from infinity to focus, the image moves away from the convex lens from focus to infinity. Also, the size of the image goes on increasing and the image is always real and inverted.

A concave lens always gives a virtual, erect, and diminished image irrespective of the position of the object.

(i) The location of image formed by a convex lens when the object is placed at infinity is (a) at focus (b) at 2F (c) at optical center (d) between Fand 2F

Answer: (a) at focus

(ii) When the object is placed at the focus of concave lens, the image formed is (a) real and smaller (b) virtual and inverted (c) virtual and smaller (d) real and erect

Answer: (b) virtual and inverted

(iii) The size of image formed by a convex lens when the object is placed at the focus of convex lens is (a) small (b) point in size (c) highly magnified (d) same as that of object

Answer: (c) highly magnified

(iv) When the object is placed at 2F in front of convex lens, the location of image is (a) at F (b) at 2 F on the other side (c) at infinity (d) between F and optical center

Answer: (b) at 2 F on the other side

(v) At which location of object in front of concave lens, the image between focus and optical centre is formed (a) anywhere between centre and infinity (b) at F (c) at 2F (d) infinity

Answer: (a) anywhere between centre and infinity

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Class 10 - Science

Get NCERT Solutions and Notes for Class 10 Science - Physics, Chemistry and Biology. At Teachoo, we have solved all the NCERT Questions, Examples from inside the book, Questions from Inside the Book, and some very important Extra Questions.

The Extra questions are what we call... Teachoo questions

These Teachoo Questions have been made from

• NCERT Exemplar
• Past Year Papers
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• From our experienced team

And, we also have MCQs - Multiple Choice Questions based on the new format by CBSE. These MCQs will be

• MCQ Questions from NCERT Exemplar
• MCQ Questions from Past Year Papers
• Case Based Questions
• Assertion Reasoning Questions

Let's look at the Chapters of Physics, Chemistry and Biology in Class 10 NCERT, and we will we study in them

The chapters are

• Chapter 1 Chemical Reactions and Equations - What is a chemical reaction, How do we know when a Chemical Reaction has taken place, Writing Chemical Equations, Balancing Chemical Equations, Writing symbols for Physical States in the equations, Different Types of Chemical Reactions - Combustion, Decomposition, Displacement, Double Displacement, Oxidation and Reduction Reaction, What is corrosion and rancidity
• Chapter 2 Acids, Bases and Salts - What are Acid, Bases and Salts, How do we identify whether compound is acidic or basic (Litmus Test and pH test), Reaction of Acid and Bases with Metals, How do Metal Carbonates and Metal HydrogenCarbonates react with Acids, Reaction of Acids and Bases with each other, Reaction of Metallic Oxides with Acids, Reaction of Non-Metallic Oxides with Base, What happens to Acid or Base in Water Solution, pH Test, Importance of pH in everyday life, Some naturally occurring acids, What are salts, pH of Salts, Chemicals from Common Salt - Sodium Hydroxide, Bleaching Powder, Baking Soda, Washing Soda, Plaster of Paris
• Chapter 3 Metals and Non-metals -  What are Metals and Non-Metals, Physical Properties of Metals and Non-Metals, Chemical Properties of Metals - Reaction of Metal when burning with Air, Reaction of Metal with Water, Reaction of Metal with Other Metal Salts, What is the Reactivity Series, Electronic Configuration of Elements, Properties of Ionic Compounds, How do Metals Occur - from Enrichment of Ore to Extracting Metals Low, Middle and Top in the Reactivity Series, Electrolytic Refining of Metals, What is Corrosion, How to prevent from Corrosion
• Chapter 4 Carbon and its Compounds - What is Carbon, Covalent Bond - Single, Double and Triple Bond, Making the Electron Dot Structure, Different Allotropes of Carbon - Diamond, Graphite, Buckminsterfullerene, Why does Carbon form a large number of Compounds?, Saturated and Unsaturated Carbon Compounds, Structure of Various Compounds of Carbon and Hydrogen, Homologous Series, Nomenclature of Carbon Compounds, What are isomers, Chemical Properties of Carbon Compounds - Combustion, Oxidation, Addition Reaction, Substitution Reaction, Properties and Reaction of Ethanol, Properties and Reactions of Ethanoic Acid, How does soap and detergent clean
• Chapter 5 Periodic Classification of Elements - Different Methods of Classification of Elements, like Dobereiner's Triads, Newlands Law of Octaves, Mendeleev's Periodic Table, Achievements and Limitations of Mendeleev's Classification, The Modern Periodic Table - Position of Elements, Trends in Modern Periodic Table (Valency, Atomic Size, Metallic and Non-metallic Properties
• Chapter 6 Life Processes - What are Life Processes, Nutrition - Autotrophic Nutrition, Heterotrophic Nutrition, How does Amoeba Obtain its Nutrition, Nutrition in Human Beings, What are Dental Caries, Respiration in Human Beings, Transportation in Human Beings - Heart, How does Blood travel, Platelets, Lymph, How does Transportation of  Food and Water occur in Plants, How do Human Beings and Plant Excrete, What is Dialysis
• Chapter 7 Control and Coordination - In the last chapter we talked about various Life Process. In this chapter, we will talk about how this Movement which we do is Controlled, Nervous System in Animals, Structure of Neuron, What happens in a Reflex Action, Human Brain - Its various parts and functions, What are Nervous tissues?, How does Coordination happen in Plants?, What are different hormones in humans, how is it secreted
• Chapter 8 How do Organisms Reproduce? - Are Organsims exact copies of themselves? , Why Variation is Important, Modes of Reproduction in Single Oranisms - Binary Fission, Multiple Fission, Fragmentation, Regeneration, Budding, Vegetative Propagation, Spore Formation. Then we talk about Sexual Reproduction - Why Sexual Reproduction, Sexual Reproduction in Flowering Plants, Reproduction in Human Beings - Male Reproductive System, Female Reproductive System, Reproductive Health, What happens if Egg is not Fertilized
• Chapter 9 Heredity and Evolution - We talk about - Accumulation of Variation due to Reproduction, What are Inherited Traits, Rules for Inheritance of Traits (Mendel's Contributions), Sex Determination in Human Beings, What is Evolution, What are acquired and inherited traits, Who was Darwin, Speciation, Evolution and Classification, Tracing Evolutionary Relationships, What are Fossils, Evolution by stages, Why Evolution should not be equated with Progress, How did Humans evolve
• Chapter 10 Light - Reflection and Refraction - What is Light, Reflection of Light, Law of Reflection, Convex and Concave Mirrors, Image formed by Concave and Convex Mirrors, Drawing Ray Diagrams, Uses of Concave and Convex Mirrors, Sign Convention, Mirror Formula, Magnification Formula, What is Refraction, Refraction through a rectangular glass slab, What is Refractive Index, Different Spherical Lenses - Convex Lens and Concave Lens, Refraction by Spherical Lenses, Ray Diagram of Image Formation of Concave and Convex Lens, Lens Formula and Magnification, What is Power of a Lens 
• Chapter 11 Human Eye and Colourful World - Structure and Different Parts of the Human Eye, What is Power of Accommodation, Defects of Vision - Myopia, Hypermetropia, Presbyopia, Refraction of Light through a Prism, Dispersion of white light by a glass prism, What is Atmospheric Refraction, Why do stars twinkle?, Advance Sunrise and Delayed Sunset, Tyndall Effect, Why is sky of Blue color, Colour of the Sun at Sunrise and Sunset
• Chapter 12 Electricity - What are Electric Charges, What is Electric Current, Formula and SI Unit of Electric Current, What is an Electric Circuit, Circuit Diagram, Symbols in an Electric Circuit, Flow of current in an electric circuit, What is Electric Potential Difference - its formula and SI Unit, What is Ammeter, Voltmeter, What is Ohm's Law, Experiment to Verify Ohm's Law, Factors on which Resistance depends, What is Resistivity, Formula and SI of Resistance and Resistivity, Resistance in Series, Resistance in Parallel and their Advantages/Disadvantages, What is Electric Power, Formulas and SI unit of Electric Power, Commercial Unit of Electricity, What is the Heating Effect of Electric Current, Different Formulas of Heat and its SI Unit, Applications of Heating Effect
• Chapter 13 Magnetic Effects of Electric Current - Why does a Compass needle deflect when Electric Current is passed through it, What is magnetic Field and Magnetic Field Lines, Field Lines around a Bar Magnet, Magnetic Field due to Current Carrying Straight Conductor, Right Hand Thumb Rule (or Maxwell's Cockscrew Rule), Magnetic Field through a current carrying circular loop, Magnetic Field through a current carrying Solenoid, Force on a Current Carrying Conductor, Fleming's Left Hand Rule, What is an Electric Motor, How does it work, What is Electromagnetic Induction, What is a Galavanometer, What is AC and DC current, differences and advantages, What is an Electric Generator, its Principle and How does it work, Wires in Domestic Circuits, Earthing, Overloading and Short Circuit
• Chapter 14 Sources of Energy - What is Energy, What is a good source of Energy, What is a good Fuel, Conventional Sources of Energy - Fossil Fuels, Thermal Power Plants, Hydro Power Plants, Bio-Mass, Wind Energy, Non-Conventional Sources of Energy - Solar Energy, Tidal Energy, Wave Energy, Ocean Thermal Energy, GeoThermal Energy, Nuclear Energy, Nuclear Fusion, What are Environmental Consequences of Different Sources of Energy, How long will Fossil Fuels last? 
• Chapter 15 Our Environment -  What is an Eco -System, Different Components of Eco-System, What are Trophic Levels, What is a food chain, Ozone Layer and its Depletion, Managing the Garbage we Produce, What are Biodegradable and Non-Biodegradable Substances, How they affect our Enviornment, 
• Chapter 16 Management of Natural Resources - What do we mean by Sustainable Living?, What are 5 R's - Refuse, Reduce, Reuse, Repurpose, Recycle, Why do we need to manage our Natural Resources?, Conservation of Forest and Wildlife, Management of Forests, Why is Water important?, Dams, What is Water Harvesting, Coal and Petroleum

Note : When you open a chapter, you will find it divided into different parts, like Concepts NCERT Solutions Questions from inside the book Examples from Inside the NCERT Teachoo Questions Multiple Choice Questions Case Based Questions Assertion Reasoning Questions When you click on any of this link, the first question will open . We have all the questions, but only the first open. To open the next one, click on the Next Button. Or, to check all the questions of that topic, scroll down to the bottom... there you will find all the questions of that topic.   

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Chapter 1 Class 10 - Chemical Reactions and Equations

Chapter 2 class 10 - acids, bases and salts, chapter 3 class 10 - metals and non-metals, chapter 4 class 10 - carbon and its compounds, chapter 5 class 10 - periodic classification of elements, chapter 6 class 10 - life processes, chapter 7 class 10 - control and coordination, chapter 8 class 10 - how do organisms reproduce, chapter 9 class 10 - heredity and evolution, chapter 10 class 10 - light - reflection and refraction, chapter 11 class 10 - human eye and colourful world, chapter 12 class 10 - electricity, chapter 13 class 10 - magnetic effects of electric current, chapter 14 class 10 - sources of energy, chapter 15 class 10 - our environment, chapter 16 class 10 - sustainable management of natural resources, solutions to cbse sample paper - science class 10.

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Case Study Questions Class 10 Science Light Reflection and Refraction

Case study questions class 10 science chapter 10 light reflection and refraction.

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

Case study:1

We can see when the pencil immersed in water it appears like bent at the water air interface. Also, the letters appears to be raised when we will see that letters through a glass slab placed over it. If the media used are different that means the bending of light is different in different media. And hence we can say that the light does not travel along a straight line path through different media. According to the velocity of light in that medium the bending of light takes place. Thus, we can say the phenomenon in which light ray bends or changes its direction when traveling from one medium to other is called as refraction of light. And also we can observed that if the ray of light is traveling from rarer medium to denser medium it bends towards the normal whereas when the ray of light travels from denser medium to rarer medium it bends away from the normal. And the extent of bending of light in a particular medium depends on the refractive index of the medium mostly. More the refractive index more is the bending or denser is the medium and less will be the velocity of light in that medium.

If less is the refractive index then less will be the bending or medium is rarer and velocity of light will be more in that medium. Like the refractive index of air is found to be 1.0003 and that of water is found to be 1.33. And hence water is more denser than air, air is rarer medium as compared to water. Thus, velocity of light in air medium is greater than velocity of light in water medium.

The absolute refractive index of the medium is given by

Absolute Refractive index= (speed of light in air)/(speed of light in medium) = c/v

Thus, for different media refractive index is different and accordingly the velocity of light is also different.

1) If the refractive indices of glass and ice are 1.52 and 1.31 respectively. Then in which medium the velocity of light is more? What it’s value?

( Velocity of light in air= 3*108 m/s)

2) How you can define rarer and denser medium on the basis of optical density?

3) If the Refractive index of diamond is found to be highest i.e. 2.42 then what it indicates?

4) What will happen if we took a glass filled with kerosene instead of water? What would be the observations?

Case study: 2

We have, the object distance is the distance of the object from the pole of the mirror. And we always know that object is placed in front of mirror that means on left side and hence object distance u is always taken as negative. The distance of the image from the pole of the mirror is taken as image distance. The image distance may be positive or negative on the basis of nature of image formed. And the distance of principal focus from the pole is called as focal length of the mirror. Thus, the relationship between the object distance u, image distance v and focal length f is given by mirror formula.

Mirror formula:

1/v + 1/u = 1/f

And magnification in case of mirror gives the extent to which the image is magnified as compared to object size.  Magnification is given by the ratio of height of image (h’) to the height of object (h).

Thus, magnification = (height of image)/(height of object)

Thus, m = h’/h

Also, in terms of object distance and image distance magnification is given by,

Magnification m = h’/h = -v/u

As we know that, image height is positive if the image formed is virtual while height of image is negative for real images.

Similarly in case of lenses, lens formula is given by

1/v – 1/u = 1/f

And magnification in case of lenses is given by

Magnification m = h’/h = v/u

The power of lens depends on the focal length of the lens and it is the ability of the lens to diverge or converge the number of rays incident on it. Also, power of lens is defined as the reciprocal of focal length of the lens.

Thus, P = 1/f

Questions :

1) If the focal length of the lens is measured in meter what will be the unit of power of lens?

2) What is the sign of power of convex and concave lens?

3) If the lenses placed in contact of powers P1, P2, P3, P4 are used then what is the net power of lens system?

4) If the magnification produced is negative and positive in case of mirrors then what about the nature of images formed there?

1) If the focal length of the lens is used in meter then the power of the lens is measured in dioptre or D or m-1.

2) As the focal length of convex lens is positive and hence the power of convex lens is positive.

Also, as the focal length of concave lens is negative and hence the power of concave lens is negative.

3) If in a lens system four lenses of power P1, P2, P3 and P4 are in contact then net power of lens system is the algebraic sum of given power of lenses.

P= P1 + P2 + P3 + P4

4) If the magnification produced is negative then the image formed is real. And if the magnification produced is positive then the image formed is virtual.

Case study:3

As we know that, in case of concave mirrors when a ray of light parallel to principal axis strikes the mirror and after reflection it passes through principal focus of the concave mirror. Also, a ray which is passing through the principal focus of the concave mirror after reflection goes parallel to the principal axis. And the ray of light which is passing through the centre of curvature of concave mirror after reflection retraces the same path in backward direction. Because of converging property of concave mirrors they are used in solar furnaces to concentrate more light to produce huge amount of heat energy. They are also used in search lights, torches, head lights of vehicles so that a strong parallel beam of light will be produced. Also, in case of shaving mirrors concave mirrors are used to see larger face of the person.

While convex mirrors are used as rear view mirror in vehicles to see the traffic behind the person for safe driving. As these mirrors are curved outwards they has wider field of view. In convex mirrors the image formed is always diminished, virtual and erect.

In concave mirror, when the object is at infinity the image formed will be at focus F and which is highly diminished, point sized, real and inverted.

1) In case of concave mirror when the image formed is virtual and erect?

2) In which case the image formed is of same size as the object in case of concave mirrors?

3) Which mirrors are called as converging and diverging mirror?

4) The focal length of concave mirror is______ and the focal length of convex mirror is _______.

1) In case of concave mirrors, when the object is placed between pole P and focus F of the mirror then the image formed is behind the mirror which is enlarged, virtual and erect.

2) When the object is placed at centre of curvature C of the mirror then image formed is also at centre of curvature C which is of same size, real and inverted.

3) Concave mirror is called as converging mirror while convex mirror is called as diverging mirror.

4) The focal length of concave mirror is positive and the focal length of convex mirror is negative.

We hope that above case study questions will help you for your upcoming exams. To see more click below – 

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Answer for the 4th question of the last case study is wrong

It is +ve for convex mirror and -ve for concave mirror

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Case Study Questions for Class 10 Science Chapter 12 Electricity

• Last modified on: 1 year ago
• Reading Time: 3 Minutes

Question 1:

Read the following and answer the questions from (i) to (v) given below: The electrical energy consumed by an electrical appliance is given by the product of its power rating and the time for which it is used. The SI unit of electrical energy is Joule (as shown in figure).

Actually, Joule represents a very small quantity of energy and therefore it is inconvenient to use where a large quantity of energy is involved.

(i) The SI unit of electric energy per unit time is (a) joule (b) joule-second (c) watt (d) watt-second

(ii) Kilowatt-hour is equal to (a) 3.6 ×10 4 J (b) 3.6 ×10 6 J (c) 36 ×10 6 J (d) 36 ×10 4 J

(iii) The energy dissipated by the heater is E. When the time of operating the heater is doubled, the energy dissipated is (a) doubled (b) half (c) remains same (d) four times

(iv) The power of a lamp is 60 W. The energy consumed in 1 minute is (a) 360 J (b) 36 J (c) 3600 J (d) 3.6 J

(v) Calculate the energy transformed by a 5 A current flowing through a resistor of 2 Ω for 30 minutes. (a) 40 kJ (b) 60 kJ (c) 10 kJ (d) 90 kJ

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