| 1 |
Infrared radiation emitted by the earth are absorbed by? |
- A. CO<sub>2</sub>,H<sub>2</sub>O
- B. N<sub>2</sub>,O<sub>2</sub>
- C. CO<sub>2</sub>,N<sub>2</sub>
- D. O<sub>2</sub>,CO<sub>2</sub>
|
| 2 |
The sphere just above the Earth's surface is. |
- A. Mescosphere
- B. Stratosphere
- C. Thermosphere
- D. Troposphere
|
| 3 |
On which base atmosphere is divided into four regions? |
- A. Change in pressure
- B. Change in rediation
- C. Change in temperature
- D. Change in volume
|
| 4 |
Which gas like a glass wall of g green house: |
|
| 5 |
Ozone is beneficial for us as it |
- A. Absorb infrared radiation.
- B. Absorb Ultraviolet radiations.
- C. Absorb Chlorofluorocarbons
- D. Absorb Air pollulant
|
| 6 |
Which of the following is a secondary pollutant. |
- A. CO<sub>2</sub>
- B. CO
- C. SO<sub>3</sub>
- D. HF
|
| 7 |
ozone depletion (i.e O3--------------> O2 + O) occurs in: |
- A. lower stratosphere
- B. middle stratosphere
- C. upper stratosphere
- D. troposphere
|
| 8 |
The stratosphere layer is at height above the earth's surface. |
- A. 0-12 km
- B. 12-50 km
- C. 50-85 km
- D. 65-120 km
|
| 9 |
Normally rain water is weakly acidic because of. |
- A. SO<sub>3</sub> gas.
- B. CO<sub>2</sub>gas.
- C. SO<sub>2</sub>gas.
- D. NO<sub>2</sub>gas.
|
| 10 |
Which gas is in involved in ozone depletion? |
- A. Nitrogen
- B. CFC's
- C. Chlorine
- D. All of them
|
