| 1 |
The process in which heat is transmitted form one body to another by the interaction of atoms and the movement of free electrons is known as |
- A. convection
- B. radiation
- C. conduction
- D. both (a) and (b)
|
| 2 |
Metals are good conductor of heat due to: |
- A. Free electrons
- B. Reamain same
- C. Small size of their molecules
- D. Rapid vibration of their atoms
|
| 3 |
__________ is a major source of heat: |
- A. Mercury
- B. Sun
- C. Fire
- D. Moon
|
| 4 |
Dull black surface are good ____________ |
- A. Absorber
- B. Radiator
- C. Conductor
- D. None of these
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| 5 |
Flow of thermal energy from hot body cold body is called: |
- A. Specific heat
- B. Latent heat
- C. Transfer of heat
- D. Heat capacity
|
| 6 |
A black dull surface is a good ________ of heat: |
- A. Emitter
- B. Absorber
- C. Reflector
- D. Both A and B
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| 7 |
Transfer of heat by actual movement of molecules form hot place to cold place is called: |
- A. Conduction
- B. Convection
- C. Radiation
- D. None
|
| 8 |
The insulator of heat is: |
- A. Cork
- B. Cotton
- C. Wood
- D. All
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| 9 |
Thermoflask is used maintain: |
- A. Heat
- B. Temperature
- C. Density
- D. Pressure
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| 10 |
Which of the following is an insulator? |
- A. Wood
- B. Glass
- C. Plastic
- D. Steel
|