| 1 |
Which gas is also known as life gas for plants. |
- A. CO
- B. O2
- C. CO2
- D. NO2
|
| 2 |
fossil fuel means. |
- A. Coal
- B. Petroluem
- C. Natural gas
- D. All of these
|
| 3 |
People of which age groups are most affected by the air pollution . |
- A. Children
- B. Young Adults
- C. Cancer patient
- D. Both children and aged people
|
| 4 |
The pereceangage of SO2 released by the combustion of coal and petroleum products is. |
- A. 40%
- B. 80%
- C. 60%
- D. 70%
|
| 5 |
Global warming causes rising of the sea level. The cause of global warming is. |
- A. SO2 gas
- B. O3 gas
- C. NO3 gas
- D. CO2 gas
|
| 6 |
The pH of normal rain water is. |
- A. 4 - 6
- B. 6 - 7
- C. 5 - 6
- D. 7- 8
|
| 7 |
In the bacterial decay, the compounds of which element are emitted. |
- A. Iodine
- B. Phosphorus
- C. Sulphur
- D. All of the above
|
| 8 |
The percentage by volume of nitrogen in dry air is. |
- A. 0.93%
- B. 0.03%
- C. 78%
- D. 20.94%
|
| 9 |
How many percentage of all available water use by humans. |
|
| 10 |
Which is not an air pollutant |
- A. SO2
- B. NH3
- C. CO2
- D. CO
|
