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Class 7 Science Case Study Question and Answer: CBSE / NCERT Board Class 7 Science Case Study Question prepared by expert Science Teacher. Students can learn Case Based Question / Paragraph Type Question for NCERT Class 7 Science.

There are total 18 chapter Nutrition in Plants, Nutrition in Animals, Fibre to Fabric, Heat, Acids, Bases and Salts, Physical and Chemical Changes, Weather, Climate and Adaptations of Animals to Climate, Winds, Storms and Cyclones, Soil, Respiration in Organisms, Transportation in Animals and Plants, Reproduction in Plants, Motion and Time, Electric Current and Its Effects, Light, Water: A Precious Resource, Forests: Our Lifeline, Wastewater Story

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CBSE Class 7 Science Case Study Question

• Chapter 1 Nutrition in Plants Case Study Question
• Chapter 2 Nutrition in Animals Case Study Question
• Chapter 3 Fibre to Fabric Case Study Question
• Chapter 4 Heat Case Study Question
• Chapter 5 Acids, Bases and Salts Case Study Question
• Chapter 6 Physical and Chemical Changes Case Study Question
• Chapter 7 Weather, Climate and Adaptations of Animals to Climate Case Study Question
• Chapter 8 Winds, Storms and Cyclones Case Study Question
• Chapter 9 Soil Case Study Question
• Chapter 10 Respiration in Organisms Case Study Question
• Chapter 11 Transportation in Animals and Plants Case Study Question
• Chapter 12 Reproduction in Plants Case Study Question
• Chapter 13 Motion and Time Case Study Question
• Chapter 14 Electric Current and Its Effects
• Chapter 15 Light
• Chapter 16 Water: A Precious Resource
• Chapter 17 Forests: Our Lifeline
• Chapter 18 Wastewater Story

What is Case Study Question?

Ans. At case Study there will one paragraph and on the basis of that concept some question will made. Students have to solve that question.

How many marks will have at case based question?

Most of time 5 questions will made from each case. There will 1 or 2 marks for each question.

Important links:

• Lakhmir Singh Class 7 Solution
• NCERT Class 7 Math Solution

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• Heat Class 7 Case Study Questions Science Chapter 3

Last Updated on August 26, 2024 by XAM CONTENT

Hello students, we are providing case study questions for class 7 science. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 7 science. In this article, you will find case study questions for cbse class 7 science chapter 3 Heat.

Table of Contents

Case Study Questions on Heat

Vinay with a group of adventurous friends, went to river rafting in Manal in winters. There the tented accommodations on the river bank .He noticed that at every camping site the basic element of all the tents was a long, narrow strip of heavy black cotton. Every tent had a room heater, the travellers were advised to place room heaters at the ground level for effective heating. At night it was chilling so, bonfire was arranged by the camp owner for the travellers to provide warmth in open cool spaces. When Vinay was sitting beside a campfire, his body facing the fire got hot while the side facing away from the fire stays cold.

Q.1. Which of the following is a method of heat transfer? (a) Convection (b) Radiation (c) Conduction (d) All of the mentioned

Difficulty Level: Easy

Ans. Option (d) is correct Explanation: There are three ways in which heat can flow from one object to another. These are conduction, convection and radiation.

Q.2. Why Vinay’s body facing the fire got hot while the side facing away from the fire stays cold because of: (a) The transfer of heat by convection (b) The transfer of heat by radiation (c) The transfer of heat by conduction (d) All of the above

Difficulty Level: Difficult

Ans. Option (b) is correct. Explanation: When Vinay sits near a bonfire, the heat gets radiated. The transfer of heat by radiation does not require any medium, heat transmission by radiation can occur between two bodies this is the reason why Vinay’s body facing the fire got hot.

Q.3. If heater is placed at a height, then: (a) cold air above this height will not be heated by heater (b) the hot air comes down to get heat from heater (c) cold air below this height will not be heated by heater (d) cold air rises up in the room to get heated.

Ans. Option (c) is correct. Explanation: A heater makes a room warmer by convection currents this allows the hot air near the heater to rise up and warm the entire room and the cold air comes down to get heat from heater. If heater is placed at a height, then cold air below this height will not be heated by heater therefore, the entire room will not warm up.

Q.4. Why all tents are black in colour at the campsite.

Difficulty Level: Medium

Ans. Black colour is a good absorber of heat. As the weather in Manali is cold so, to absorb maximum sunlight to keep the tent hot, the tents are made up of black fabric.

Q.5. Why white colour fabric tent is preferred on in a hot weather place and why?

Ans. White fabric is preferred in a hot weather place because light colours are bad absorber of heat as they reflect most of the heat (sunlight) that falls on them therefore, this helps to keep the tent cool.

• Respiration in Organisms Class 7 Case Study Questions Science Chapter 6
• Physical and Chemical Changes Class 7 Case Study Questions Science Chapter 5
• Acids Bases and Salts Class 7 Case Study Questions Science Chapter 4

Nutrition in Animals Class 7 Case Study Questions Science Chapter 2

Nutrition in plants class 7 case study questions science chapter 1, topics from which case study questions may be asked.

• Identify cold and hot objects.
• Define temperature.
• Describe how temperature can be measured using thermometer.
• Describe different types of thermometers.
• Explain different ways of heat transfer.
• Explain how woolen clothes keep us warm.

Temperature is a reliable measure of the hotness or coldness of an object. The object is how much hot or cold is decided based on its temperature.

Frequently Asked Questions (FAQs) on Heat Case Study Questions

Q1: what are case study questions for cbse examinations.

A1: Case study questions in CBSE examinations typically involve scenarios or real-life examples, requiring students to apply their understanding of concepts to solve problems or analyze situations.

Q2: Why are case study questions important for understanding class 7 science chapters?

A2: Case study questions provide a practical context for students to apply theoretical knowledge to real-world situations, fostering deeper understanding and critical thinking skills.

Q3: How should students approach answering case study questions for CBSE?

A3: Students should carefully read the case study, identify the key issues or problems presented, analyze the information provided, apply relevant concepts and principles of plant nutrition, and formulate well-supported solutions or responses.

Q4: Are there any resources available online for students to practice case study questions on class 7 science chapters for CBSE exams?

A4: Yes, several educational websites offer case study questions for CBSE students preparing for science examinations. We also offer a collection of case study questions for all classes and subject on our website. Visit our  website  to access these questions and enhance your learning experience.

Q5: How can students effectively prepare for case study questions on heat for CBSE exams?

A5: Effective preparation strategies include regular revision of concepts, solving practice questions, analyzing case studies from previous exams, seeking clarification on doubts, and consulting with teachers or peers for guidance and support.

Q6: How can teachers incorporate case study questions on heat class 7 science into classroom teaching?

A6: Teachers can integrate case studies into lesson plans, group discussions, or interactive activities to engage students in active learning, promote problem-solving skills, and facilitate a deeper understanding of concepts of heat.

Q7: What is land breeze?

A7: The breeze that flows from land surface to sea surface, during night is called land breeze.

Q8: State two similarities between laboratory thermometer and clinical thermometers.

A8: Both the thermometers are used to measure temperature and both of them use mercury.

Q9: Why bottom of cooking utensils is often blackened?

A9: The black objects are very good absorber of radiant energy and so when the bottoms black painted bottom of cooking utensils are exposed to flame, they absorb the heat quickly thus, this speeds up the cooking process.

Q10: Define radiation with an example.

A10: Radiation is the transfer of heat without any medium. For example, heat from the sun comes to us.

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Class 7 Science Important Questions, NCERT Solutions | MCQ Tests

Access our premium content for class 7 Science in the form of NCERT Solutions, Revision Notes, Important Questions, Online MCQ Tests, and Learning Videos on myCBSEguide to improve your grades.

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User submitted papers, nutrition in plants, nutrition in animals, fibre to fabric (deleted), acids bases and salts, physical and chemical changes, weather climate and adaptations of animals to climate (deleted), winds storms and cyclones (deleted), soil (deleted), respiration in organisms, transportation in animals and plants, reproduction in plants, motion and time, electric current and its effects, water a precious resource (deleted), forests our lifeline, waste water story, general chemistry, water and wastewater, life processes, natural resources and their conservation.

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The basic reason behind incorporating the subject of Science is to cultivate scientific temperament among the learners. As one of the practical subjects, science is of great interest to young minds. In this article, we will know everything about the course of class 7 Science and how can you prepare for the same.

CBSE Class 7 Science Resources

Resources related to CBSE Class 7 Science are available here on myCBSEguide . This includes the class 7 science Syllabus, Question Papers, User Submitted Papers, CBSE Revision Notes, CBSE worksheets, online tests, and learning videos. Our worksheets are available in downloadable PDF format.

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Class 7 Science Syllabus & Revision Notes

The syllabus for Class 7 Science is available on the students’ dashboard , it has all the details related to the topics prescribed by the CBSE for Class 7 Science. Before setting off to prepare, one must know the syllabus well. After knowing the syllabus, the next requirement is content that is available in the textbooks. On myCBSEguide you can access the Class 7 Science Textbook in PDF.

Here you can also get Class 7 Science Revision Notes sorted chapter-wise. Notes when used properly can do wonders for the examinees. Also, it helps in understanding the concepts in a much-simplified way. Even if there remains any doubt, students can refer to the learning videos of class 7 Science from the course page. Some of the video links have been provided below.

• 02 Nutrition in Plants
• 03 Modes of Nutrition
• 04 Photosynthesis
• 05 Stomata Guard Cells
• 06 How do plants get nutrients
• 07 Parasitic insectivorous Plants
• 08 Saprotrophs

CBSE Class 7 Science NCERT Solutions

NCERT solutions are important for all CBSE students. These questions become even more important in the higher classes. Hence, students need to develop a habit of solving NCERT questions. For the NCERT Solutions of other subjects check the NCERT Solutions for Class 7 .

NCERT Class 7 Science Chapter-wise Solutions

• Acids, basis, and salts
• Electric current and its effects
• Fibre to Fabric
• Forest our lifeline
• Motion and time
• Nutrition in animals
• Nutrition in plants

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CBSE Class 7 Science Case Base Questions

The latest of its kind, case studies questions for class 7 science are available on myCBSEguide. In a bid to encourage competency-based learning, these questions based on real-life scenarios are incorporated to test students’ problem-solving abilities. The case base questions were first introduced for senior classes, i.e., only for the secondary and senior secondary levels. But now, this format is also adopted in the primary and upper primary classes. Get the best of class 7 science case study questions here.

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• NCERT Solutions for Class 07

Students can download class 7 textbook questions and answers in form of NCERT solution from the myCBSEguide App or Student Dashboard for CBSE students. NCERT publishes books for CBSE and many state boards. In class 7, NCERT has books on English, Hindi, Science Social Science and mathematics. NCERT Solutions – …

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NCERT solutions for Class 7 Science

NCERT Solutions for Class 7 Science includes all the questions provided in NCERT Books for 7th Class Science Subject. Here all questions are solved with detailed explanation and available for free to check mycbseguide.com. Book: National Council of Educational Research and Training (NCERT) Class: 7th Class Subject:  Science NCERT solutions …

NCERT solutions for Class 7 Science Winds, storms and cyclones

NCERT solutions for Class 7 Science Winds, storms and cyclones book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT …

NCERT solutions for Class 7 Science Soil

NCERT solutions for Class 7 Science Soil book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class …

NCERT solutions for Class 7 Science Respiration in organisms

NCERT solutions for Class 7 Science Respiration in organisms book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text …

NCERT solutions for Class 7 Science Transportation in animal and plants

NCERT solutions for Class 7 Science Transportation in animal and plants book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from …

NCERT solutions for Class 7 Science Reproduction in plants

NCERT solutions for Class 7 Science Reproduction in plants book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text …

NCERT solutions for Class 7 Science Motion and time

NCERT solutions for Class 7 Science Motion and time book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text …

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Extra Questions for Class 7 Science NCERT

May 31, 2019 by Veerendra

Checkout updated extra questions for class 7 science for CBSE exam. We have included these questions for extra pracitce and help with the concepts. Extra questions for Class 7 Science will build strong foundation for Class 7 science and higher clases.

Here is the list of Extra Questions for Class 7 Science with Answers based on latest NCERT syllabus prescribed by CBSE.

• Chapter 1 Nutrition in Plants Class 7 Extra Questions
• Chapter 2 Nutrition in Animals Class 7 Extra Questions
• Chapter 3 Fibre to Fabric Class 7 Extra Questions
• Chapter 4 Heat Class 7 Extra Questions
• Chapter 5 Acids, Bases and Salts Class 7 Extra Questions
• Chapter 6 Physical and Chemical Changes Class 7 Extra Questions
• Chapter 7 Weather, Climate and Adaptations of Animals to Climate Class 7 Extra Questions
• Chapter 8 Winds, Storms and Cyclones Class 7 Extra Questions
• Chapter 9 Soil Class 7 Extra Questions
• Chapter 10 Respiration in Organisms Class 7 Extra Questions
• Chapter 11 Transportation in Animals and Plants Class 7 Extra Questions
• Chapter 12 Reproduction in Plants Class 7 Extra Questions
• Chapter 13 Motion and Time Class 7 Extra Questions
• Chapter 14 Electric Current and Its Effects Class 7 Extra Questions
• Chapter 15 Light Class 7 Extra Questions
• Chapter 16 Water: A Precious Resource Class 7 Extra Questions
• Chapter 17 Forests: Our Lifeline Class 7 Extra Questions
• Chapter 18 Wastewater Story Class 7 Extra Questions

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Physical and Chemical Changes Important Questions Class 7 Science Chapter 6

Physical and Chemical Changes Class 7 Science Chapter 6 Important Questions and Answers are provided here. We prepared these extra questions based on the latest NCERT Class 7 Science Book. These important questions will help you to properly understand a particular concept of the chapter. Practicing class 7 important questions before the exam will help you to get excellent marks in the exam. 

Class 7 Science Chapter 6 Physical and Chemical Changes Important Questions

Very short answer type question.

1: What is rust?

Answer:   When iron oxide is hydrated, it is known as Rust (Fe 2 O 3 . xH 2 O)

2: What type of change in rust?

Answer:   Chemical change

3: What type of change is photosynthesis?

4: What is a chemical change?

Answer:   A change, in which a new substance with different properties is formed, is known as a chemical change.

5: A change, in which a new substance with different properties is formed, is known as a __________.

6: ___________is a property by virtue of which a metal can be beaten into thin sheets without breaking.

Answer:   Malleability

7: Write the chemical formula of blue vitriol.

Answer:   Crystals of copper sulphate pent hydrate (CuSO4.5H 2 O) are blue in colour. So, it is commonly known as blue vitriol.

8: State the two important conditions for rusting.

Answer:   Presence of water and presence of oxygen

9: What is freezing point of water?

Answer:   The freezing point is 0°C at which water freezes.

10: What is freezing of water?

Answer:   Freezing is the process in which water turns to ice when cold enough (below 0°C temperature).

11: What is melting?

Answer:   Melting is the process of turning a solid to a liquid.

12: Name the process by which water molecules continuously change to vapour.

Answer:   Evaporation

13: At what temperature water evaporates?

Answer:   100 °C

14: In physical change a new substance is formed. (True/False).

Answer:   False

15: The jumping of a person from some height is a chemical change.(True/False)

16: Extraction of metal is a chemical process or physical process?

Answer:   Chemical process

17: A medicine is the end product of the chain of ________________________.

Answer:   Chemical reaction

18: Sound may be produced during a chemical reaction yes or no?

Answer:   Yes

19: During a chemical reaction

Answer:   All of these

20: Heat, light or any other radiation like UV rays may be given off or absorbed during a physical change (True/False).

21: Iron pipes coated with zinc do not get rusted easily. (True/False).

Answer:   True

22: Condensation of steam is chemical process or physical change?

Answer:   physical change

23: Cutting of log of wood into pieces is a chemical process or physical change?

24: Name the two methods by which rusting of iron can be prevented.

Answer:   By painting or greasing and by galvanizing with chromium or zinc

25: Setting of curd is a _______________ process.

Answer:   Chemical

26: Give an example of chemical change in which heat, light, sound and unpleasant gases are produced.

Answer:   Explosion of a firework

27: Digestion is a __________________ change.

28: Spoiling of food is a ____________________ change.

29: Which of the two is permanent change chemical change or physical change?

30: Define galvanisation.

Answer:   The process of depositing a layer of zinc on iron is called galvanisation.

31: Name the metals involved in making stainless steel.

Answer:   Chromium, nickel and manganese.

32: What kind of change involved in burning of coal?

33: Formation of manure from leave is a physical change. (True/False)

34: Write down the equation representing the process of rusting.

Answer:   Iron(Fe) + oxygen (O 2 ) → water (H 2 O) + rust (iron oxide Fe 2 O 3 )

Short Answer Type Questions

1: Explain physical reaction along with examples.

Answer:  A change in which a substance undergoes a change in its physical properties is called a physical change. For example; melting of ice.

2: Explain chemical reaction along with examples.

Answer:  A change in which one or more new substances are formed is called a chemical reaction. For example; rusting of iron.

3: Differentiate between physical and chemical reactions.

Answer:  

4: State the condition necessary for the occurrence of any reactant.

Answer:  For the occurrence of any reaction, the molecules or atoms of the reactants must collide with one another, in order to break old bonds and form new bonds.

5: State rate of chemical reaction.

Answer:  The reaction rate or rate of reaction is the speed at which reactants are converted into products.

6: Why new products are formed in a chemical reaction?

Answer:  In a chemical reaction the old bonds of the reactants are broken down and fresh bonds are formed, resulting in formation of new products with different properties of that of earlier products.

7: Explain the process of rusting.

Answer:  When an iron object is left in damp air (or water) for a considerable time, it gets covered with a red-brown flaky substance called rust. This is called rusting of iron. During the rusting of iron, iron metal combines with the oxygen (of air) in the presence of water (moisture) to form a compound iron oxide.

8: How can we prevent rusting?

Answer:  Whenever you get iron, water and oxygen together, you get rust. So the best way to prevent it is to keep them apart; that’s what paint does, or the spray-on wax and oil coatings that the car protection companies sell. Keep your tools dry; wipe down your bike after a ride; keep the water away and it can’t rust.

9: Setting of curd is regarded as a chemical change, explain why?

Answer:  Setting of curd is a chemical change because we cannot get the original substance (milk) back. The new substance, i.e. curd is different from the milk in taste, smell and chemical properties. 10: What happens when baking soda is treated with vinegar?

Answer:  When baking soda is treated with vinegar, we hear a hiss sound and see bubbles of a gas coming out. This gas is carbon dioxide. Vinegar (Acetic acid) + Baking soda (Sodium hydrogen carbonate) → Carbon dioxide + other substances.

11: What happens when magnesium oxide is dissolved in water?

Answer:  Magnesium hydroxide forms in the presence of water (MgO + H 2 O → Mg(OH) 2 ), but it can be reversed by heating it to separate moisture.

12: What happens when a piece of iron metal is placed in copper sulphate solution?

Answer:  When iron is placed in Copper sulphate solution, the iron is coated with a brown coloured substance “copper” and CuSO 4  solution changes from blue to light green. This is due to iron displacing copper as it is more reactive than copper.

13: Baking soda is mixed with lemon juice, bubbles are formed with the evolution of gas, explain the changes occurred here.

Answer:  It’s a chemical reaction. Here, a new substance carbon dioxide is formed.

14: Name some of the process in which both chemical and physical changes take place.

Answer:  Another example of a change that is both chemical and physical is the burning of wood. The moisture present in the wood turns to vapor, when heated, which is a physical change. The actual burning of wood will generate carbon dioxide (among other products) and is a chemical change.

15: Explain how painting of an iron rod prevents it from rusting.

Answer:  For rusting, iron must be in contact with both air and moisture. When the iron gate is painted the layers of paint cut the contact between air, moisture and iron. Thus, it prevents rusting.

16: Rusting of an iron object is faster is coastal areas than in desert area. Explain why?

Answer:  In coastal areas there is more moisture in air due to the presence of sea. But, in the desert there is a scarcity of water and hence air is almost dry there. Both air and moisture are necessary conditions for rusting. So, rusting is faster in coastal areas than in desert.

17: Burning of any substance is the chemical change. Discuss.

Answer:  In burning always heat is produced, the old bonds of the reactant are broken down and fresh bonds are formed, resulting in formation of new products with different properties of that of earlier products.

18: Why spoiled food produces foul smell?

Answer:  When food goes bad and starts to become pungent, it is most often due to the growth of spoilage microbes such as bacteria, yeasts and mold. Odors can come from two sources: chemicals that are released from the food as the microbes decompose it, or chemicals produced directly by the microbes themselves.

19: A slice of apple acquires a brown colour if it is not consumed immediately, explain.

Answer:  This is because apples are a rich source of iron and when we cut an apple slice, the cells ruptures. Oxygen in the air oxidises the iron availability in these cells. Also an enzyme called POLYPHENOL OXIDASE present in these cells catalyse the oxidation of iron in a quick matter of time.

20: State Four characteristics which are included in the physical properties of matter.

Answer:  Properties such as shape, size colour and state of matter are called its physical properties.

21: Define malleability along with an example.

Answer:  Malleability is a property by the virtue of which a metal can be beaten into sheets without breaking. Malleability is the ability of a metal to be hammered into sheets. Gold and silverware are highly malleable. When a piece of hot iron is hammered it takes the shape of a sheet.

22: Why formation of manure from leave is a chemical change?

Answer:  Formation of manure from leave is chemical change because the manure formed has different composition from that of the leaves.

23: Why cutting of wood is a chemical change?

Answer:  Cutting of wood is a physical change because the identity and composition of wood does not change.

Long Answer Type Questions

1: Which one is better technique to obtain sugar from sugar solution- crystallization or evaporation to dryness?

Answer:  Crystallization is better because,

• It occurs on the entire surface.
• we get solid in the pure crystallized form.
• The soluble impurities get removed in this process.
• It doesn’t require very high temperature conditions.

2: Explain the changes occurring in burning of candle.

Answer:  When a candle burns, both physical and chemical changes take place. On a burning candle, the wax melts but can be solidified again on cooling. This shows that melting of wax is a physical change. Burning of candles also produces light and some gases like carbon dioxide. Hence, burning the wick of the candle is a chemical change.

3: Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.

Answer:  Burning of wood produces ash and smoke. Hence the properties of wood are changed and new substances are formed. So, it is a chemical reaction. When a log of wood is cut into small pieces, there is no new substance formed. Each small piece bears the properties of wood. So, its a physical change. Obviously, burning and cutting of wood are two different types of changes. 4: Explain the formation of crystal of copper sulphate.

Answer:   A cup of water taken in a beaker and a few drops of dilute Sulphuric acid are added into it. The water is hated. When it starts boiling copper sulphate powder is added slowly while stirring continuously till no more powder can be dissolved. The solution is filtered and allowed to cool down. Crystals of copper sulphate slowly form at the bottom of the beaker.

5: A part from new products, many other things accompany a chemical change, what are those things?

Answer:   Part from new products, many other things accompany a chemical change, those things are:

• Heat, light or any other radiation may be given off or absorbed.
• Change in smell may take place.
• Sound may be produced.
• Change in colour may take place.
• A gas may be formed

6: Why chemical changes are very important in our life?

Answer:   A change in which the composition of a substance is altered is called a chemical change. As a result, the original properties get changed and one or more new substances are formed. Burning of paper, rusting of iron, cooking of food. All new substances are formed as a result of chemical reactions, a medicine is the end product of the chain of chemical reaction, photosynthesis, digestion is the chemical reaction, useful materials like plastics, detergents and many more products are formed by chemical reactions only, thus we can say chemical changes are very important in our life.

7: Explain the process of rusting of iron, and measures to prevent the same.

Answer:  Prevention method of rusting Galvanization is the process of applying a protective layer of zinc on a metal. It is a very common method of preventing the rusting of iron. Providing the metals with an electric charge can help inhibit the electrochemical reactions that lead to rusting.

8: Explain the following: a. Galvanisation b. Crystallisation

Answer: (a) Depositing a layer of zinc or chromium on iron to prevent it from rusting is known as galvanization. Doing this prevents direct contact of iron with air and oxygen and thus prevents it from rusting.

(b) Some substances can be obtained in pure state from their solutions by the process of crystallisation.

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Kahoot! stands with Ukraine

Kahoot! is committed to supporting Ukrainian educators and learners affected by the current crisis. To protect the integrity of our platform and our users, we will suspend offering Kahoot!’s services in Russia, with the exception of self-study.

Ukrainian educators and learners need our support

We are deeply troubled and concerned by the violence and loss of life resulting from the Russian invasion of Ukraine. We stand with the people of Ukraine and we hope for the swiftest and most peaceful possible end to the current crisis. 

Kahoot! has received a number of requests from schools and educators in Ukraine requesting the help of our services to continue teaching despite the disruption of the war. We have supported each of these and we are now offering Kahoot! EDU solutions for free for both K-12 and higher education institutions for one year to Ukrainian schools in need. In addition, we are fast-tracking translation and localization of the Kahoot! platform into Ukrainian. 

Suspending commercial services and sales in Russia

Our commercial footprint in the Russian market is very limited. We do not have offices or representation in the country, nor do we have any physical operations or data services there. The overwhelming majority of our users in Russia are teachers and students using our free service.

Kahoot! is abiding by the international sanctions regime, and does not allow sales to sanctioned individuals or entities in Russia. Shortly after the Russian invasion of Ukraine, Kahoot! initiated a process to suspend offering of all commercial services in Russia. This includes but is not limited to online sales, assisted sales, app store sales and prohibiting sales to Russian corporations and organizations.

Prioritizing safe and secure use of the Kahoot! platform

As part of our mission to make learning awesome, and as education remains a fundamental human right, we offer teachers, students and personal users free access to our platform. We do this in more than 200 countries and regions in a spirit similar to public commons services, such as Wikipedia. 

Similarly, inclusivity is one of Kahoot!’s overarching values. As such, our aim is to, whenever and wherever possible, offer children, schools and others the opportunity to use digital tools for impactful education and learning, irrespective of their background or location. This has been our guiding principle also for offering our service in Russia.

Among our first responses to the crisis was to swiftly expand our global moderation team’s monitoring on all Russia-related content to safeguard the integrity of the platform. 

However, as the situation continues to escalate, it is vital that we are able to ensure that our platform is used according to our own guidelines and standards. Therefore, in addition to suspending sales, we will be taking all possible and necessary steps to suspend access to Kahoot! services in Russia, with the eventual exception of self-study mode which will feature only content verified by Kahoot!.

This will enable students, school children and other individual users to continue their learning journeys both safely and responsibly. We will continue to assess ways in which our services can be offered safely and responsibly to support all learners and educators, also those based in Russia. 

Supporting our employees 

At Kahoot!, we are not just a team in name, we are a team in practice. As such, we are committed to the well-being of our employees, especially those with ties to Ukraine, or those that in other ways are particularly affected by the war. We are providing these colleagues with any support we can. 

Acknowledging the current situation, the Kahoot! Group made an emergency aid donation to Save the Children and the Norwegian Refugee Council. This is a contribution to support life-saving assistance and protection for innocent Ukrainian children, families and refugees. 

As the situation in Ukraine continues to develop our teams across the company are actively monitoring the crisis so that we can respond in the most responsible and supportive way possible. 

Our hearts go out to the people of Ukraine, their loved ones, and anyone affected by this crisis. 

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CBSE Class 10 Maths Standard Question Paper Set-1 (30/5/1) 2024

Maths Standard Set-1 (30/5/1) Question Paper for CBSE Class 10 - 2024 with Solutions - Download FREE PDF

Vedantu’s CBSE Class 10 Maths Set-1 (30/5/1) Question Paper 2024 solves all the questions and provides the answers in a PDF format. This question paper is designed to help students to prepare thoroughly for their examinations. It includes various questions covering the CBSE Class 10 Maths Syllabus , ensuring students practise and understand every concept effectively.

The solutions provided by Vedantu are detailed; by using this question paper and its solutions, students can enhance their problem-solving skills, improve their understanding of mathematical concepts, and gain confidence for the actual examination. Vedantu's CBSE Class 10 Maths Previous Question Paper consists of different sets of papers that help students practise different questions.

Instructions to Follow - CBSE Class 10 Maths Standard Question Paper Set-1 (30/5/1) 2024

Read the following instructions carefully and follow them:

(i) This question paper contains 38 questions. All questions are compulsory.

(ii) Question Paper is divided into five Sections – Section A, B, C, D and E .

(iii) In Section– A question number 1 to 18 are Multiple Choice Questions (MCQs) and question number 19 & 20 are Assertion-Reason based questions of Answer (VSA) type questions of 2 marks each.

(iv) In Section– B questions number 21 to 25 are Very Short Answer (VSA) type questions, carrying 2 marks each.

(v) In Section– C question number 26 to 31 are Short Answer (SA) type questions carrying 3 marks each.

(vi) In Section– D question number 32 to 35 are Long Answer (LA) type Questions carrying 5 marks each.

(vii) In Section– E question number 36 to 38 are Case Study based questions Carrying 4 marks each. Internal choice is provided in 2 marks question in each case study.

(viii)There is no overall choice. However, an internal choice has been provided in 2 questions in Section- B , 2 questions in Section- C , 2 questions in Section- D and 3 questions in Section- E .

(ix) Draw neat diagram wherever required. Take pie =22/7 wherever required not stated.

(x) Use of calculators is not allowed .

Syllabus and Weightage of Units for CBSE Maths Class 10 - Exam 2024-25

For the CBSE Class 10 Maths exam 2024-25, the syllabus is designed to cover key areas including Algebra, Geometry, Trigonometry, and Statistics. Each unit has a specific weightage, emphasizing the importance of topics such as Polynomials, Quadratic Equations, and Coordinate Geometry. Understanding this weightage helps students prioritize their study efforts and focus on the most critical areas of the curriculum.

Benefits of Solving CBSE Class 10 Maths Standard Question Paper Set-1 (30/5/1) 2024

Solving Class 10 Maths 2024 Set-1 (30/5/1) Question Paper helps students understand the format and types of questions that appear in the exam, making them more comfortable with the main exam.

By working through this question paper, students can recognise which frequently asked topics and focus their revision accordingly.

Practising with this paper helps students improve their time management during the exam, ensuring they can complete all questions within the given time limit.

Regular practice with previous papers builds confidence as students become more familiar with the types of questions and the best ways to answer them.

With continuous practice, students can reduce mistakes and improve their accuracy in solving mathematical problems.

Vedantu’s The Class 10 Maths Standard 2024 Set-1 (30/5/1) Question Paper is a useful material for students. It helps them understand the exam format, identify key topics, improve time management, and build confidence. By practising with this paper, students can assess their strengths and weaknesses, refine their problem-solving skills, and enhance their overall exam performance. It is an essential tool for effective preparation and success in the CBSE Maths exam. 

Class 10 Mathematics Question Paper 2024 Links PDF Download - All Other Sets

Class 10 Mathematics Year-wise Question Papers (2013 - 2024)

Related Study Materials for Class 10 Maths

FAQs on CBSE Class 10 Maths Standard Question Paper Set-1 (30/5/1) 2024

1. How many sets of question papers are there in Vedantu’s Class 10 Maths Question Paper 2024?

There are 5 sets of previous question papers of the year 2024 available on the Vedantu website that provide different versions namely CBSE Class 10 Standard Maths Question Paper 2024 With Solutions and CBSE Class 10 Standard Maths Question Paper 2024 With Solutions of the exam for students to practise.

2. Why should I practise with Class 10 Maths Question Paper 2024 PDF?

Practising with these papers helps you understand the exam pattern, improve your ability to answer different types of questions, and improve your time management skills.

3. How can the solutions in Class 10 Maths Question Paper 2024 PDF help me?

Solutions in Vedantu’s Class 10 Maths 2024 Question Paper provide step-by-step explanations for each question, helping you understand concepts better and learn the correct problem-solving approach.

4. Are the Class 10 Maths Question Paper 2024 PDF by Vedantu useful for revision?

Yes, they are excellent for revision. By solving them, you can revise important topics, identify weak areas, and improve your overall preparation for the exam.

5. What type of questions does the CBSE Class 10 Standard Maths Question Paper 2024 With Solutions contain?

The CBSE Class 10 Standard Maths Question Paper 2024 With Solutions includes multiple/choice, short answer, and long answer questions covering all topics in the syllabus.

6. What type of questions does the CBSE Class 10 Standard Maths Question Paper 2024 With Solutions contain?

The CBSE Class 10 Standard Maths Question Paper 2024 with Solutions contains questions focusing on fundamental concepts and practical applications designed for students not pursuing advanced mathematics in their future studies.

7. How do these question papers prepare me for the CBSE exam?

Class 10 Maths 2024 Question Paper helps you prepare for the CBSE exam by giving each section's format, difficulty, and time taken. Practising with them helps you with the exam structure and enhances your readiness.

8. Can I access the Class 10 Maths Question Paper 2024 PDF Download from the Vedantu website for FREE?

Yes, Vedantu provides these papers for free, making them accessible to all students preparing for the Class 10 Maths exam. You can also refer to the Vedantu website for other subject's question papers.

9. What is the purpose of solving the CBSE Class 10 Maths 2024 Question Paper?

Solving these papers helps students understand the exam pattern, practise different types of questions, and assess their preparation level.

10. Does Vedantu Class 10 Maths 2024 Question Paper provide solutions with the question papers?

Yes, Vedantu provides detailed solutions for all the questions in these question papers, helping students understand the correct methods to solve problems.

Blog The Education Hub

https://educationhub.blog.gov.uk/2024/08/20/gcse-results-day-2024-number-grading-system/

GCSE results day 2024: Everything you need to know including the number grading system

Thousands of students across the country will soon be finding out their GCSE results and thinking about the next steps in their education.   

Here we explain everything you need to know about the big day, from when results day is, to the current 9-1 grading scale, to what your options are if your results aren’t what you’re expecting.  

When is GCSE results day 2024?  

GCSE results day will be taking place on Thursday the 22 August.     

The results will be made available to schools on Wednesday and available to pick up from your school by 8am on Thursday morning.  

Schools will issue their own instructions on how and when to collect your results.   

When did we change to a number grading scale?  

The shift to the numerical grading system was introduced in England in 2017 firstly in English language, English literature, and maths.  

By 2020 all subjects were shifted to number grades. This means anyone with GCSE results from 2017-2020 will have a combination of both letters and numbers.  

The numerical grading system was to signal more challenging GCSEs and to better differentiate between students’ abilities - particularly at higher grades between the A *-C grades. There only used to be 4 grades between A* and C, now with the numerical grading scale there are 6.  

What do the number grades mean?  

The grades are ranked from 1, the lowest, to 9, the highest.  

The grades don’t exactly translate, but the two grading scales meet at three points as illustrated below.  

The bottom of grade 7 is aligned with the bottom of grade A, while the bottom of grade 4 is aligned to the bottom of grade C.    

Meanwhile, the bottom of grade 1 is aligned to the bottom of grade G.  

What to do if your results weren’t what you were expecting?  

If your results weren’t what you were expecting, firstly don’t panic. You have options.  

First things first, speak to your school or college – they could be flexible on entry requirements if you’ve just missed your grades.   

They’ll also be able to give you the best tailored advice on whether re-sitting while studying for your next qualifications is a possibility.   

If you’re really unhappy with your results you can enter to resit all GCSE subjects in summer 2025. You can also take autumn exams in GCSE English language and maths.  

Speak to your sixth form or college to decide when it’s the best time for you to resit a GCSE exam.  

Look for other courses with different grade requirements     

Entry requirements vary depending on the college and course. Ask your school for advice, and call your college or another one in your area to see if there’s a space on a course you’re interested in.    

Consider an apprenticeship    

Apprenticeships combine a practical training job with study too. They’re open to you if you’re 16 or over, living in England, and not in full time education.  

As an apprentice you’ll be a paid employee, have the opportunity to work alongside experienced staff, gain job-specific skills, and get time set aside for training and study related to your role.   

You can find out more about how to apply here .  

Talk to a National Careers Service (NCS) adviser    

The National Career Service is a free resource that can help you with your career planning. Give them a call to discuss potential routes into higher education, further education, or the workplace.   

Whatever your results, if you want to find out more about all your education and training options, as well as get practical advice about your exam results, visit the  National Careers Service page  and Skills for Careers to explore your study and work choices.   

You may also be interested in:

• Results day 2024: What's next after picking up your A level, T level and VTQ results?
• When is results day 2024? GCSEs, A levels, T Levels and VTQs

Tags: GCSE grade equivalent , gcse number grades , GCSE results , gcse results day 2024 , gsce grades old and new , new gcse grades

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Case Study Questions Class 7 Science Soil

Case study questions class 7 science chapter 9 soil, cbse case study questions class 7 science soil, case study 1, case study 2.

Que. 2) (d) Rocks.

Case study 3

Case study 4.

Que. 3) (c) Loamy soil.

Case study 5

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Case Study Questions for Class 7 Science Chapter 3 Fibre to Fabric

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[Download] Case Study Questions for Class 7 Science Chapter 3 Fibre to Fabric

Here we are providing case study or passage-based questions for class 7 science chapter 3 Fibre to Fabric.

Case Study/Passage Based Questions

Divyank and Amar are working on a project report on ‘Occupational Hazards’. They went to cotton and wool spinning mills and mulberry farm of their research. They observed that due to improper working environment and lack of safety measures there were many health hazards faced by the workers in their routine activities like respiratory disease, skin infections. etc. They discussed the problems faced by the workers with their teacher. Their teacher decided to write the letter to the concerned authority to highlight the seriousness of the issue and to take proper steps/action in this regard. 1. Which of the following disease is related to wool industry? (a) Rinder pest (b) Anthrax (c) Tuberculosis (d) Both (a) and (b) 2. Which of the following is the reason of health problem that is associated with sericulture? (a) Reeling (b) Boiling cocoons (c) Decaying of dead worms (d) Both (b) and (c) 3. Which one the following causes the sorter’s disease? (a) Streptococcus pneumoniae (b) Salmonella typhi (c) Bacillus anthracis (d) Escherichia coli

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What is case study question for class 7 science.

Case study or passage-based questions in class 7 Science typically require students to read a given scenario or passage and answer questions based on the information provided. These questions assess students’ comprehension, analytical thinking, and application of scientific concepts. 

Best Ways to Prepare for Case Study Questions

To develop a strong command on class 6 Science case study questions, you can follow these steps:

• Read the textbook and study materials:  Familiarize yourself with the concepts and topics covered in your class 6 Science curriculum. Read the textbook thoroughly and take notes on important information.
• Practice analyzing case studies:  Look for case studies or passages related to class 6 Science topics. Analyze the given information, identify key details, and understand the context of the situation.
• Develop comprehension skills:  Focus on improving your reading comprehension skills. Practice reading passages or articles and try to summarize the main points or extract relevant information. Pay attention to details, vocabulary, and the overall structure of the passage.
• Understand scientific concepts:  Ensure that you have a solid understanding of the scientific concepts discussed in class. Review the fundamental principles and theories related to each topic.
• Make connections:  Try to connect the information provided in the case study to the concepts you have learned in class. Identify any cause-effect relationships, patterns, or relevant scientific principles that apply to the situation.
• Practice critical thinking:  Develop your critical thinking skills by analyzing and evaluating the information given in the case study. Think logically, consider multiple perspectives, and draw conclusions based on the evidence provided.
• Solve practice questions:  Look for practice questions or sample case study questions specifically designed for class 6 Science. Solve these questions to apply your knowledge, practice your analytical skills, and familiarize yourself with the format of case study questions.
• Seek clarification:  If you come across any challenging concepts or have doubts, don’t hesitate to ask your teacher for clarification. Understanding the underlying principles will help you tackle case study questions effectively.

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