| 1 |
Conduction on heat occur at ________ rate in materials |
- A. Different
- B. Same
- C. Both A and B
- D. None
|
| 2 |
What happens to the thermal conductivity of a wall if its thickness is doubled? |
- A. Become double
- B. Remain the same
- C. Become half
- D. Become one fourth
|
| 3 |
Good conductor is : |
- A. Air
- B. Wood
- C. Iron
- D. None
|
| 4 |
Thermal conductivities of Lead |
|
| 5 |
Transfer of heat by actual movement of molecules form hot place to cold place is called: |
- A. Conduction
- B. Convection
- C. Radiation
- D. None
|
| 6 |
Convention is done by ____________ |
- A. Vibration of atoms
- B. Actual movement of particles
- C. Same as conduction
- D. Nil
|
| 7 |
There are ______ modes of transfer of heat: |
|
| 8 |
Wood, cork,cotton, wool , rubber are the examples of: |
- A. Conductor
- B. Thermal conductor
- C. Insulator
- D. Both a & b
|
| 9 |
On heating Air becomes. |
- A. Heavier
- B. Lighter
- C. Remain same
- D. None
|
| 10 |
Larger is the area greater will be: |
- A. Radiation
- B. Transfer of heat
- C. Evaporation
- D. Conduction of heat
|
