| 1 |
Fossil fuel means. |
- A. Coal
- B. Petroleum
- C. Natural gas
- D. All of them
|
| 2 |
Which of the following is a secondary pollutant. |
- A. CO<sub>2</sub>
- B. CO
- C. SO<sub>3</sub>
- D. HF
|
| 3 |
Our planet earth consists of ____________ natural Spheres. |
|
| 4 |
Normal rain water is: |
- A. weakly acidic
- B. strongly acidic
- C. weakly basic
- D. strongly basic
|
| 5 |
Major portion of ozone layer is foun in. |
- A. Troposphere
- B. Stratosphere
- C. Mesosphere
- D. Thermosphere
|
| 6 |
How many percentage of sunlight is absorbed by atmosphere gases. |
- A. 12%
- B. 18%
- C. 24%
- D. 30%
|
| 7 |
The major constituents of troposphere are: |
- A. carbon dioxide and argon
- B. nitrogen and oxygen
- C. argon and oxygen
- D. carbon dioxide and oxygen
|
| 8 |
The region of ozone decomposition in stratosphere is. |
- A. 20 km
- B. 30 km
- C. 40 km
- D. 50 km
|
| 9 |
Just above the Earth's surface is |
- A. Mesosphere
- B. Stratosphere
- C. Theremosphere
- D. Troposphere
|
| 10 |
A pollutant is a waste material that pollutes. |
- A. Air
- B. Water
- C. Soil
- D. All of them
|
