| 1 |
The process in which heat is transfer due to actual movement of molecule is called. |
- A. Conduction
- B. radiation
- C. Convection
- D. All of these
|
| 2 |
The SI unit of thermal conductivity is |
- A. Wm K-1
- B. Wm-1K
- C. Wm-1K -1
- D. WmK
|
| 3 |
A Leslie cube is use to identify : |
- A. Radiation
- B. Conduction
- C. Convection
- D. Both A and B
|
| 4 |
What gas behaves as glass or polythene to radiation: |
- A. Nitrogen
- B. Hydrogen
- C. Carbon di oxide
- D. Methane
|
| 5 |
The amount of heat absorb by body depends on the : |
- A. Colour of the surface
- B. Nature of surface
- C. Texture of surface
- D. Both A and B
|
| 6 |
Convection of heat is the process of heat transfer due to the |
- A. Random motion of molecules
- B. Downward movement of molecules
- C. Upward movement of molecules
- D. Free movement of molecules
|
| 7 |
In building central heating system works on the process of: |
- A. Covection
- B. Radiation
- C. Conduction
- D. both a and b
|
| 8 |
Which is expert thermal climber: |
- A. Crow
- B. Sparrow
- C. Hawks
- D. None
|
| 9 |
There are ways to transfer the heat from one place to another. |
|
| 10 |
Room are heated using gas heaters by: |
- A. Conduction only
- B. Convection and radiation
- C. Radiation only
- D. Convection only
|
