Heat MCQ Practice Set (1–30) covers basic concepts like temperature, heat transfer, thermal expansion, and specific heat capacity.
These multiple-choice questions help students revise key Heat chapter fundamentals for school and competitive exams.
1. Heat is a form of:
Correct Answer: B
Heat is energy transferred due to temperature difference.
2. The SI unit of heat is:
Correct Answer: C
Joule (J) is the SI unit of heat/energy.
3. Heat flows from:
Correct Answer: A
Heat transfers naturally from higher to lower temperature.
4. The device used to measure temperature is:
Correct Answer: B
A thermometer is used to measure temperature.
5. Heat transfer through solids mainly occurs by:
Correct Answer: C
Conduction is heat transfer through direct contact in solids.
6. Heat transfer in liquids and gases mainly occurs by:
Correct Answer: B
Convection occurs due to movement of fluid particles.
7. Heat transfer without any medium is called:
Correct Answer: B
Radiation can transfer heat through vacuum.
8. The boiling point of water at normal atmospheric pressure is:
Correct Answer: A
Water boils at 100°C at 1 atm pressure.
9. The melting point of ice is:
Correct Answer: C
Ice melts at 0°C under normal pressure.
10. The amount of heat required to raise the temperature of a body depends on:
Correct Answer: B
Q = m × c × ΔT.
11. Specific heat capacity is defined as the heat required to raise the temperature of:
Correct Answer: A
Specific heat is heat needed for 1 kg mass for 1°C rise.
12. The unit of specific heat capacity is:
Correct Answer: D
Specific heat capacity unit is J/kg°C (or J/kgK).
13. Which material is a good conductor of heat?
Correct Answer: B
Metals like copper conduct heat well.
14. Which material is a poor conductor of heat?
Correct Answer: C
Wood is an insulator and does not conduct heat well.
15. The transfer of heat from the Sun to Earth occurs mainly by:
Correct Answer: B
Radiation does not need a medium.
16. The Celsius scale has:
Correct Answer: A
0°C to 100°C has 100 equal divisions.
17. The SI unit of temperature is:
Correct Answer: B
Kelvin (K) is the SI unit of temperature.
18. The value of absolute zero in Celsius scale is approximately:
Correct Answer: C
Absolute zero is about -273°C (0 K).
19. Thermal expansion is generally maximum in:
Correct Answer: B
Gases expand more than solids and liquids.
20. The hotness or coldness of a body is measured by:
Correct Answer: C
Temperature indicates hotness or coldness.
21. Latent heat is the heat required to:
Correct Answer: B
Latent heat changes state without changing temperature.
22. The latent heat of fusion is related to the change from:
Correct Answer: A
Fusion means melting (solid to liquid).
23. The latent heat of vaporization is related to the change from:
Correct Answer: C
Vaporization means liquid changing to gas.
24. The heat required to change 1 kg of a solid into liquid at its melting point is called:
Correct Answer: B
Latent heat of fusion changes solid to liquid at constant temperature.
25. The heat required to change 1 kg of liquid into gas at its boiling point is called:
Correct Answer: A
Vaporization is liquid to gas at constant temperature.
26. Which of the following is an example of radiation?
Correct Answer: B
Solar heat reaches Earth mainly by radiation.
27. A good insulator of heat is:
Correct Answer: B
Air is a poor conductor and acts as an insulator.
28. The instrument used to measure high temperatures is:
Correct Answer: B
Pyrometer is used to measure very high temperatures.
29. The temperature at which a liquid changes into gas is called:
Correct Answer: C
Boiling point is the temperature of liquid to gas change.
30. The heat transfer that involves actual movement of particles is:
Correct Answer: B
Convection happens due to the movement of fluid particles.
FAQs about Heat MCQs (Practice Set 1–30)
1. What topics are covered in these Heat MCQs?
These questions cover temperature, heat transfer (conduction, convection, radiation), latent heat, thermal expansion, and basic units.
2. Who can use this Heat MCQ practice set?
This set is useful for school students and competitive exam learners who want quick revision of Heat chapter concepts.
3. How do these Heat MCQs help students in exams?
MCQs improve concept clarity, build speed, and help students practice objective-type questions for exams.
4. Are answers and explanations provided for every question?
Yes, each question includes the correct option and a short explanation for better understanding and revision.
5. What is the best way to revise using these Heat MCQs?
Solve all questions one by one, review explanations, and revise weak topics like heat transfer methods and temperature scales.
These questions cover temperature, heat transfer (conduction, convection, radiation), latent heat, thermal expansion, and basic units.
2. Who can use this Heat MCQ practice set?
This set is useful for school students and competitive exam learners who want quick revision of Heat chapter concepts.
3. How do these Heat MCQs help students in exams?
MCQs improve concept clarity, build speed, and help students practice objective-type questions for exams.
4. Are answers and explanations provided for every question?
Yes, each question includes the correct option and a short explanation for better understanding and revision.
5. What is the best way to revise using these Heat MCQs?
Solve all questions one by one, review explanations, and revise weak topics like heat transfer methods and temperature scales.
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