| 1 |
Indicate the source of sulphur which is responsible for the presennce of oxides of sulphur in the atomospher. |
- A. Combustion of fossil fuels
- B. Decomposition of vegetation
- C. Waste gases from digestionof animals
- D. Photochemical smog
|
| 2 |
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
|
| 3 |
fossil fuel means. |
- A. Coal
- B. Petroluem
- C. Natural gas
- D. All of these
|
| 4 |
% age of oxygen gas by volume in dry air is |
- A. 21%
- B. 90%
- C. 40%
- D. 30%
|
| 5 |
Whcih factor deermines the severity of a pollutant. |
- A. Persistence
- B. Concentration
- C. Chemical nature
- D. All of the above
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| 6 |
Which one of these pollutants are not found in car exhaust fumes. |
- A. NO2
- B. SO2
- C. CO
- D. O3
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| 7 |
99% of atmosphere consists of |
- A. O2 and CO2
- B. N2 and H2
- C. N2 and O2
- D. N2 and CO2
|
| 8 |
Which components are essential for the cormation of photochemical smog. |
- A. NO2 volatile organic compounds sunlight
- B. CO, NO2,CO2
- C. CO2,NO2,Sunlight
- D. Volatile organic compounds,NO2,CO
|
| 9 |
Why is smog not felt in summer? |
- A. Becasue fog is not present in summer
- B. Becaucse in summer smoke and fog cannot mix with each other
- C. Beacuse less fossil fuels are burnt in summer
- D. beacuse due to heat of the Earth the smoke rises up
|
| 10 |
Which gases contribute towards the formation of acid rain. |
- A. Oxides of Both the oxides of nitrogen and sulfur
- B. Oxides of carbon
- C. Oxides of sulphur
- D. Oxides of nitrogen
|
