| 1 |
Land and sea breezes are the result of: |
- A. Absorption
- B. Radiation
- C. Conduction
- D. Convection
|
| 2 |
How does heat reaches form sun to earth through? |
- A. Conduciton
- B. Convection
- C. Radiation
- D. None
|
| 3 |
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
|
| 4 |
A Leslie cube is a: |
- A. Metal box
- B. Wooden box
- C. Glass box
- D. None
|
| 5 |
Land breeze blows from: |
- A. Sea to land drawing night
- B. Sea to land during day
- C. Land to sea during night
- D. Land to sea during day
|
| 6 |
Leslie's cube is a box of: |
- A. Metal
- B. Non-Metal
- C. Wood
- D. Metalloids
|
| 7 |
The SI unit of thermal conductivity is |
- A. Wm K-1
- B. Wm-1K
- C. Wm-1K -1
- D. WmK
|
| 8 |
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
|
| 9 |
On hot days cold air from sea began to move towards land: |
- A. Sea breeze
- B. Land breeze
- C. Both A and B
- D. None of these
|
| 10 |
Central heating systems in buildings operate by |
- A. Conduction
- B. Radiation
- C. Convection
- D. Condensation
|