| 1 |
Normal rain water is: |
- A. weakly acidic
- B. strongly acidic
- C. weakly basic
- D. strongly basic
|
| 2 |
Which metal present in acid rain affect the aquatic life by clogging fish gills? |
- A. Lead
- B. Chromium
- C. Aluminium
- D. Mercury
|
| 3 |
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.
|
| 4 |
The region in which ozone layere depletes is called. |
- A. Ozone hole
- B. Black hole
- C. Both of them
- D. None of them
|
| 5 |
The major constituents of troposphere are: |
- A. carbon dioxide and argon
- B. nitrogen and oxygen
- C. argon and oxygen
- D. carbon dioxide and oxygen
|
| 6 |
Building are being damaged by acid rain because it attacks. |
- A. Calcium sulphate
- B. Calcium nitrate
- C. Calcium carbonate
- D. Calcium oxalate
|
| 7 |
What percentage of nitrogen and oxygen is in the atmosphere. |
- A. 69%
- B. 79%
- C. 9%
- D. 89%
|
| 8 |
In the troposphere (lowest layer), the temperature decreases form 17°C to; |
- A. -58°C
- B. -93°C
- C. -61°C
- D. -49°C
|
| 9 |
Ozone layer is not found is |
- A. Upper stratosphere
- B. Mid stratosphere
- C. Lower stratosphere
- D. All of them
|
| 10 |
Which factor determines the severity of a pollutant? |
- A. Chemical nature
- B. concentration
- C. Persistence
- D. All of them
|
