Details: Heat and Temperature

1. What is the SI unit of temperature?

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule

Correct Answer: A

Your Answer: A

2. In a clinical thermometer, the narrow bend near the bulb helps to

A) keep the mercury level fixed for reading

B) increase mercury quantity

C) reduce expansion

D) change Celsius into Fahrenheit

Correct Answer: A

Your Answer: A

3. Which statement is true about heat and temperature?

A) They are always the same

B) Heat is a substance

C) Temperature measures degree of hotness

D) Temperature flows from one body to another

Correct Answer: C

Your Answer: C

4. Heat transfer in solids mainly takes place by

A) Conduction

B) Convection

C) Radiation

D) Reflection

Correct Answer: A

Your Answer: A

5. Heat is a form of

A) Matter

B) Force

C) Energy

D) Pressure

Correct Answer: C

Your Answer: C

6. Absolute zero is equal to

A) 0°C

B) -273°C

C) -100°C

D) 273°C

Correct Answer: B

Your Answer: B

7. Why are cooking utensils often made of metal?

A) Metals conduct heat well

B) Metals are soft

C) Metals are cheap

D) Metals are transparent

Correct Answer: A

Your Answer: A

8. What is the freezing point of water on the Fahrenheit scale?

A) 32°F

B) 0°F

C) 100°F

D) 212°F

Correct Answer: A

Your Answer: A

9. Heat transfer in liquids mainly takes place by

A) Conduction

B) Radiation

C) Convection

D) Refraction

Correct Answer: C

Your Answer: C

10. Which thermometer is commonly used to measure human body temperature?

A) Laboratory thermometer

B) Maximum thermometer

C) Clinical thermometer

D) Digital barometer

Correct Answer: C

Your Answer: C

11. Which color absorbs more heat?

A) White

B) Black

C) Yellow

D) Pink

Correct Answer: B

Your Answer: B

12. Which device is used to measure temperature?

A) Barometer

B) Hygrometer

C) Thermometer

D) Lactometer

Correct Answer: C

Your Answer: C

13. Which of the following expands the most on heating?

A) Solids

B) Liquids

C) Gases

D) All equally

Correct Answer: C

Your Answer: A

14. The Sun heats the Earth mainly by

A) Conduction

B) Convection

C) Friction

D) Radiation

Correct Answer: D

Your Answer: D

15. What happens to most substances when heated?

A) They contract

B) They expand

C) They melt always

D) They disappear

Correct Answer: B

Your Answer: B

16. What is the boiling point of water on the Kelvin scale at normal pressure?

A) 273 K

B) 300 K

C) 212 K

D) 373 K

Correct Answer: D

Your Answer: D

17. The normal human body temperature is about

A) 27°C

B) 47°C

C) 37°C

D) 57°C

Correct Answer: C

Your Answer: C

18. Which scale shows the freezing point of water as 0?

A) Kelvin

B) Fahrenheit

C) Richter

D) Celsius

Correct Answer: D

Your Answer: D

19. Which method of heat transfer does not need a medium?

A) Conduction

B) Convection

C) Evaporation

D) Radiation

Correct Answer: D

Your Answer: D

20. What is the boiling point of water on the Fahrenheit scale?

A) 100°F

B) 180°F

C) 212°F

D) 273°F

Correct Answer: C

Your Answer: C

21. Which of these is a good conductor of heat?

A) Wood

B) Plastic

C) Rubber

D) Copper

Correct Answer: D

Your Answer: D

22. Which statement is correct about boiling water?

A) Its temperature keeps rising after boiling starts

B) Its temperature remains constant during boiling

C) Its temperature becomes zero

D) Its temperature falls suddenly

Correct Answer: B

Your Answer: B

23. Which of these is an example of heat transfer by conduction?

A) Sea breeze

B) Warmth from the Sun

C) Water currents in a pan

D) A metal spoon getting hot in tea

Correct Answer: D

Your Answer: D

24. Heat flows from

A) Cold body to hot body

B) Hot body to cold body

C) Heavy body to light body

D) Solid to liquid

Correct Answer: B

Your Answer: B

25. Temperature tells us about the

A) Hotness of a body

B) Weight of a body

C) Speed of a body

D) Shape of a body

Correct Answer: A

Your Answer: A

26. Which scale shows the boiling point of water as 100 at normal pressure?

A) Fahrenheit

B) Celsius

C) Kelvin

D) Decibel

Correct Answer: B

Your Answer: B

27. Which color reflects more heat?

A) Black

B) Brown

C) White

D) Blue

Correct Answer: C

Your Answer: C

28. Why are handles of cooking pots often made of wood or plastic?

A) They are shiny

B) They are poor conductors

C) They are heavy

D) They melt fast

Correct Answer: B

Your Answer: B

29. Which of these is an example of heat transfer by convection?

A) Sunlight warming Earth

B) Water circulating while heating

C) Iron rod getting hot

D) Feeling warmth near fire through rays

Correct Answer: B

Your Answer: B

30. Which of these is a poor conductor of heat?

A) Glass

B) Iron

C) Aluminium

D) Copper

Correct Answer: A

Your Answer: A

Heat and Temperature

Review: Vaibhav