| 1 |
Anything kept in thermos : |
- A. In temperature remain constant
- B. Its temperature decrease
- C. Its temperature increase
- D. None of these
|
| 2 |
The main source of energy in the unierse is: |
- A. Moon
- B. Stars
- C. Sun
- D. Planets
|
| 3 |
Which one box is used to keep food hot and ice cream cold for long period? |
- A. Iron box
- B. Aluminium Box
- C. Styrofoam box
- D. Plastic box
|
| 4 |
Falls ceiling is done to: |
- A. Lower the height of ceiling
- B. Keep the roof clean
- C. Cool the room
- D. Insulate the ceiling
|
| 5 |
Poor conductor of heat is: |
- A. Copper
- B. Aluminium
- C. Water
- D. Iron
|
| 6 |
How does heat reaches form sun to earth through? |
- A. Conduciton
- B. Convection
- C. Radiation
- D. None
|
| 7 |
The brids stretch out their wings and circle in the rising currents of hot air called |
- A. conduction
- B. convection
- C. radiation
- D. thermals
|
| 8 |
Dull black surface is a best: |
- A. Emitter
- B. Absorber
- C. Reflector
- D. None of these
|
| 9 |
Land and sea breezes are the result of: |
- A. Absorption
- B. Radiation
- C. Conduction
- D. Convection
|
| 10 |
There are ways to transfer the heat from one place to another. |
|