| 1 |
The region in which ozone layere depletes is called. |
- A. Ozone hole
- B. Black hole
- C. Both of them
- D. None of them
|
| 2 |
Which one of these pollutants are not found in car exhaust fumes? |
- A. CO<sub>2</sub>
- B. O<sub>3</sub>
- C. NO<sub>2</sub>
- D. SO<sub>2</sub>
|
| 3 |
A strange bitter smell noticed near photo copier machine is of. |
- A. H<sub>2</sub>S
- B. SO<sub>2</sub>
- C. O<sub>2</sub>
- D. O<sub>3</sub>
|
| 4 |
The pH of water containing CO<sub>2</sub> is |
- A. 4-6
- B. 5.6-6
- C. 6-7
- D. 7-8
|
| 5 |
Which one of the following is not an air pollutants? |
- A. Nitrogen
- B. Carbon dioxide
- C. Nitrogen oxide
- D. Ozone
|
| 6 |
Ozone layer is not found is |
- A. Upper stratosphere
- B. Mid stratosphere
- C. Lower stratosphere
- D. All of them
|
| 7 |
Which gas saves the surface of earth from ultra violet radiation? |
- A. CO<sub>2</sub>
- B. CO
- C. N<sub>2</sub>
- D. O<sub>3</sub>
|
| 8 |
Which one of the following is not air pollutants? |
- A. N<sub>2</sub>
- B. CO
- C. NO<sub>2</sub>
- D. O<sub>2</sub>
|
| 9 |
Our planet earth consists of ____________ natural Spheres. |
|
| 10 |
The Earth's atmosphere is getting hotter because of. |
- A. Increasing concentration of CO
- B. Increasing concentration of CO<sub>2</sub>
- C. Increasing concentration of O<sub>3</sub>
- D. Increasing concentration of SO<sub>2</sub>
|
