Heat Transfer Quiz - CBSE Class 11 Physics

Free practice quiz: Heat Transfer (CBSE Class 11 Physics). 36 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 11 Physics practice quiz has 36 multiple-choice questions on Heat Transfer. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. What is the primary method of heat transfer by which heat is transferred through a solid material?

   1. Conduction
   2. Convection
   3. Radiation
   4. Evaporation
   Show answer

   Answer: A. Conduction

2. In thermal radiation, what does the term 'black body' refer to?

   1. A perfect reflector
   2. A perfect absorber
   3. A body that emits less radiation
   4. A body that emits more radiation
   Show answer

   Answer: B. A perfect absorber

3. When heat is conducted along a material, the kinetic energy of the particles does what?

   1. Remains unchanged
   2. Increases
   3. Decreases
   4. Varies randomly
   Show answer

   Answer: B. Increases

4. What is the relationship between the thermal conductivity of a material and its insulating properties?

   1. Higher thermal conductivity means better insulation
   2. Lower thermal conductivity means better insulation
   3. Thermal conductivity has no effect
   4. All materials are equally insulated regardless of conductivity
   Show answer

   Answer: B. Lower thermal conductivity means better insulation

5. What is the primary reason for using a vacuum in thermos flasks?

   1. To prevent convection
   2. To increase radiation
   3. To enhance conduction
   4. To reduce air pressure
   Show answer

   Answer: A. To prevent convection

More questions in this quiz

Answers and explanations are in the full quiz.

1. Which of the following statements is true for free convection?
2. What is the main driving force behind heat transfer due to conduction?
3. In which mode of heat transfer do fluids move to transfer heat?
4. What is the term for the transfer of energy through electromagnetic waves?
5. What happens to the rate of heat transfer by conduction as the thickness of the material increases?
6. Which of the following materials is the best conductor of heat?
7. What is the Stefan-Boltzmann law concerned with?
8. Which principle states that the total energy of an isolated system remains constant?
9. What is the phenomenon called when heat is transferred from a hot object to a colder one without the intervention of a medium?
10. What unit is used to measure thermal conductivity?
11. When two bodies are in thermal equilibrium, what can be said about their temperatures?
12. In which of the following scenarios does conduction occur?
13. What is the physical principle behind the workings of a thermos?
14. Which type of heat transfer would be used in a microwave oven?
15. What is the primary mode of heat transfer in liquids?
16. In a vacuum, which mode of heat transfer can occur?
17. What is the formula for calculating heat transfer by conduction?
18. Which factor does NOT affect the rate of heat conduction?
19. The efficiency of a heat exchanger is primarily determined by which of the following?
20. What is the Stefan-Boltzmann Law concerned with?
21. Which of the following is an example of heat transfer by convection?
22. What effect does increasing the surface area of a conductor have on the heat transfer rate?
23. In which situation does conduction occur?
24. In the context of thermal radiation, what does emissivity indicate?
25. As the temperature of a gas increases, what happens to the average speed of its molecules?
26. What defines a 'black body' in the context of thermal radiation?
27. How does the thermal conductivity of metals compare to non-metals?
28. What is the effect of moisture on the thermal conductivity of soil?
29. In a thermodynamic process, what is 'adiabatic' referring to?
30. What is the main principle of the second law of thermodynamics related to heat transfer?
31. Which law states that the total amount of energy remains constant in an isolated system?

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