MCQsCBSE Class 7 Science Chapter 4 Heat MCQ Questions with Answers

CBSE Class 7 Science Chapter 4 Heat MCQ Questions with Answers

Explore our comprehensive collection of MCQ on heat class 7 tailored specifically for students following the CBSE syllabus. This section features a detailed list of heat class 7 MCQ questions with answers, meticulously curated to align with the NCERT guidelines and the CBSE curriculum.

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    Chapter 4 of the Class 7 Science NCERT textbook get into the intriguing topic of heat, examining its properties, sources, and effects on different substances. These heat class 7 MCQ are designed to test students’ understanding of key concepts introduced in the chapter, providing a robust foundation for their science education.

    By engaging with these multiple-choice questions, students can reinforce their knowledge of the chapter’s content, ensuring they are well-prepared for their exams and have a solid grasp of the fundamental principles discussed in their NCERT textbook.

    Science Chapter 4 Heat Class 7 MCQ with Answers

    Here are the list of 50 various chapter 4 heat class 7 MCQ questions. These questions cover various aspects discussed in the chapter, including the properties of heat, methods of heat transfer, and everyday applications of heat principles.

    Class 7 Heat MCQs with Answers

    Q.1: What is the normal body temperature in Celsius as mentioned in NCERT?

    A) 35°C

    B) 42°C

    C) 37°C

    D) 30°C

    Answer: C

    Q.2: Which material is a poor conductor of heat?

    A) Aluminum

    B) Copper

    C) Wool

    D) Iron

    Answer: C

    Q.3: What prevents the mercury level from falling in a clinical thermometer when removed from the mouth?

    A) The bulb

    B) The glass tube

    C) The kink

    D) The scale

    Answer: C

    Q.4: Heat transfer that does not require a medium is called?

    A) Conduction

    B) Convection

    C) Radiation

    D) Reflection

    Answer: C

    Q.5: What is the primary reason woollen clothes keep us warm?

    A) They are made from animal fibres.

    B) They are tightly woven.

    C) They trap air.

    D) They are thick.

    Answer: C

    Q.6: Which scale is used in India for measuring temperature as mentioned in the NCERT textbook?

    A) Kelvin

    B) Fahrenheit

    C) Celsius

    D) Rankine

    Answer: C

    Q.7: Which type of clothes do we prefer to wear in summer according to NCERT?

    A) Dark-coloured

    B) Thick

    C) Light-coloured

    D) Woolen

    Answer: C

    Q.8: What type of thermometer is used to measure body temperature?

    A) Laboratory thermometer

    B) Digital thermometer

    C) Clinical thermometer

    D) Weather thermometer

    Answer: C

    Q.9: According to NCERT, which type of breeze occurs at night at coastal areas?

    A) Sea breeze

    B) Land breeze

    C) Solar breeze

    D) Lunar breeze

    Answer: B

    Q.10: What happens to the water at the bottom of a flask when heated from below?

    A) It cools down

    B) It evaporates

    C) It rises

    D) It condenses

    Answer: C

    Q.11: Which part of the clinical thermometer contains mercury?

    A) The tube

    B) The scale

    C) The bulb

    D) The cap

    Answer: C

    Q.12: What phenomenon explains why hot water rises?

    A) Conduction

    B) Convection

    C) Radiation

    D) Expansion

    Answer: B

    Q.13: Why are light-coloured clothes more comfortable in the summer?

    A) They absorb more heat

    B) They do not absorb heat

    C) They reflect most of the heat

    D) They are generally looser

    Answer: C

    Q.14: What is the purpose of the kink in a clinical thermometer?

    A) To prevent mercury from rising too high

    B) To keep the thermometer straight

    C) To prevent mercury from falling back

    D) To increase the accuracy of the reading

    Answer: C

    Q.15: Why should a clinical thermometer not be used to measure high temperatures?

    A) It can break easily

    B) It does not have a high enough range

    C) It is not accurate enough

    D) It can melt

    Answer: B

    Q.16: What should you do if mercury from a thermometer is spilled?

    A) Clean it with water

    B) Leave it as it is

    C) Collect it with a brush

    D) Treat it as hazardous and follow proper disposal procedures

    Answer: D

    Q.17: Why are stainless steel pans often provided with copper bottoms?

    A) To improve heat conduction

    B) To make them look more attractive

    C) To make them easier to clean

    D) To increase their weight

    Answer: A

    Q.18: Why is convection not possible in solids?

    A) Molecules are too far apart

    B) Molecules cannot move freely

    C) Solids are too dense

    D) Heat does not affect solids

    Answer: B

    Q.19: What is radiation?

    A) Movement of heat through a fluid

    B) Direct transfer of heat through a material

    C) Transfer of heat through electromagnetic waves

    D) Generation of heat within an object

    Answer: C

    Q.20: What happens to the molecules of a substance when it is heated?

    A) They come closer together

    B) They stop moving

    C) They move faster and spread apart

    D) They change state from solid to liquid

    Answer: C

    Q.21: What property of dark-coloured clothes makes them suitable for winter?

    A) They reflect sunlight

    B) They absorb more heat

    C) They are usually made from thicker material

    D) They repel cold air

    Answer: B

    Q.22: Why do we use a clinical thermometer for measuring body temperature?

    A) It is less expensive

    B) It has a high range

    C) It is designed for accurate readings of body temperature

    D) It can also measure room temperature

    Answer: C

    Q.23: Why should the bulb of a thermometer not touch the sides of the container?

    A) To prevent it from breaking

    B) To ensure accurate measurement

    C) To prevent heat transfer to the container

    D) To avoid contamination

    Answer: B

    Q.24: What does it mean if two objects at different temperatures are brought into contact?

    A) Heat will flow from the warmer to the cooler object

    B) The cooler object will transfer heat to the warmer one

    C) They will not exchange heat

    D) Heat will flow equally between the two objects

    Answer: A

    Q.25: Why is mercury used in thermometers?

    A) It is inexpensive

    B) It has a high boiling point

    C) It is visible and expands uniformly

    D) It is a solid at room temperature

    Answer: C

    Q.26: What is a land breeze?

    A) Air moving from the sea to the land

    B) Warm air moving from the land to the sea

    C) Cool air moving from the land to the sea at night

    D) Hot air rising over the sea

    Answer: C

    Q.27: What does a sea breeze bring?

    A) Warm air from the sea during the day

    B) Cool air from the sea during the night

    C) Hot air from the land

    D) Moisture from the sea

    Answer: A

    Q.28: Why do people living in coastal areas experience sea breezes?

    A) The sea absorbs heat more quickly than the land

    B) The land heats up and cools down more quickly than the sea

    C) The sea is always cooler than the land

    D) The land is hotter during the night

    Answer: B

    Q.29: What causes convection currents in water?

    A) Water heating up uniformly

    B) Hot water rising and cold water sinking

    C) All parts of the water heating up at the same rate

    D) Cold water rising to the surface

    Answer: B

    Q.30: Which of the following is not a method of heat transfer?

    A) Conduction

    B) Convection

    C) Compression

    D) Radiation

    Answer: C

    Q.31: What is an insulator?

    A) A material that allows heat to pass through easily

    B) A material that does not allow heat to pass through easily

    C) A device used to measure temperature

    D) A type of thermometer

    Answer: B

    Q.32: What type of heat transfer is experienced when you feel the heat from a fire without touching it?

    A) Conduction

    B) Convection

    C) Radiation

    D) Reflection

    Answer: C

    Q.33: Which material is considered a good conductor of heat?

    A) Plastic

    B) Wood

    C) Copper

    D) Wool

    Answer: C

    Q.34: Why does hot air rise?

    A) It is denser than cold air

    B) It is less dense than cold air

    C) It is attracted to colder regions

    D) It contains more moisture

    Answer: B

    Q.35: What device is used to measure temperature?

    A) Barometer

    B) Thermometer

    C) Calorimeter

    D) Hygrometer

    Answer: B

    Q.36: Which phenomenon explains why it is cooler at the seaside during the day?

    A) Radiation

    B) Conduction

    C) Sea breeze

    D) Land breeze

    Answer: C

    Q.37: What is advised to wear in summer to keep cool according to the NCERT text?

    A) Tight clothing

    B) Dark coloured clothing

    C) Light coloured clothing

    D) Thermal wear

    Answer: C

    Q.38: What happens to the molecules in a substance when it cools down?

    A) They move faster

    B) They expand

    C) They slow down and contract

    D) They change from liquid to solid

    Answer: C

    Q.39: Why are buildings in hot climates often painted white?

    A) To reflect heat

    B) To absorb heat

    C) To prevent UV radiation

    D) To look aesthetically pleasing

    Answer: A

    Q.40: What kind of thermometer is used to measure very high temperatures that are not suitable for clinical thermometers?

    A) Digital thermometer

    B) Glass thermometer

    C) Laboratory thermometer

    D) Infrared thermometer

    Answer: C

    Q.41: Why is it recommended to wear several layers of clothing in winter?

    A) It looks fashionable

    B) Multiple layers trap air, which is a good insulator

    C) It is lighter than wearing one thick layer

    D) It allows one layer to absorb all the cold

    Answer: B

    Q.42: How does heat travel from the sun to the earth?

    A) Conduction

    B) Convection

    C) Radiation

    D) Contraction

    Answer: C

    Q.43: What should you do before reading a clinical thermometer?

    A) Shake it down to ensure mercury is at a low level

    B) Heat it up

    C) Cool it down

    D) Wipe it with a wet cloth

    Answer: A

    Q.44: Why are copper bottoms used on stainless steel pans?

    A) Copper is heavier than steel

    B) Copper is a better conductor of heat

    C) Copper is cheaper than steel

    D) Copper is easier to clean

    Answer: B

    Q.45: Which of the following is true about radiation?

    A) It requires a physical medium

    B) It can occur in a vacuum

    C) It only occurs in liquids

    D) It is the slowest method of heat transfer

    Answer: B

    Q.46: What effect does the color of clothing have in terms of heat absorption?

    A) Color has no effect on heat absorption

    B) Dark colors absorb more heat

    C) Light colors absorb more heat

    D) All colors absorb heat equally

    Answer: B

    Q.47: Why does mercury in a thermometer rise or fall?

    A) Due to the container’s material

    B) Due to the temperature of the environment

    C) Due to pressure changes

    D) Due to the color of the mercury

    Answer: B

    Q.48: What is the main function of the kink in a clinical thermometer?

    A) To make it easier to handle

    B) To prevent mercury from falling back too quickly

    C) To increase the temperature range

    D) To reduce the amount of mercury used

    Answer: B

    Q.49: Which of the following materials is a good insulator?

    A) Metal

    B) Glass

    C) Plastic

    D) Copper

    Answer: C

    Q.50: Why is convection not possible in solids?

    A) Molecules are tightly packed and cannot move freely

    B) Solids do not contain any heat

    C) Heat in solids is always transferred by radiation

    D) Molecules in solids do not interact with heat

    Answer: A

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