| 1 |
By the increase in the concentration of CO<sub>2</sub> in air. |
- A. Decrease in heat energy
- B. Increase in heat energy.
- C. Heat energy remains same
- D. None of them
|
| 2 |
The layer above troposphere extend upto 50 kilometers called. |
- A. Mesosphere
- B. Hydrosphere
- C. Stratosphere
- D. Thermosphere
|
| 3 |
The sphere just above the Earth's surface is. |
- A. Mescosphere
- B. Stratosphere
- C. Thermosphere
- D. Troposphere
|
| 4 |
Ozone has a smell |
- A. Bitter
- B. Rotten egg
- C. Sweat
- D. None of them
|
| 5 |
Cause of global warming is : |
- A. CO<sub>2</sub> gas
- B. SO<sub>2</sub>gas
- C. NO<sub>2</sub>gas
- D. O<sub>2</sub>gas
|
| 6 |
Almost all aircrafts fly in: |
- A. troposphere
- B. mesosphere
- C. stratosphere
- D. themosphere
|
| 7 |
Ozone depletion was first noticed is. |
- A. 1970's
- B. 1980's
- C. 1990's
- D. 1960's
|
| 8 |
Atmosphere is divided into; |
- A. 3 regions
- B. 4 regions
- C. 5 regions
- D. 6 regions
|
| 9 |
Ozone is beneficial for us as it absorbs..................... |
- A. Infrared Radiations
- B. Ultraviolet radiations
- C. Chlorofluorocarbons
- D. Air pollutants
|
| 10 |
Normaily rain water is weakly acidic because. |
- A. SO<sub>3</sub>
- B. CO<sub>2</sub>
- C. CO<sub>3</sub>
- D. NO<sub>2</sub>
|
