| 1 |
-------------- is a mixture of gases like methane, ethane and propane etc. |
- A. Coal
- B. Petroleum
- C. Natural gas
- D. Botha a and b
|
| 2 |
The percentage of oxygen in Air is |
- A. 78%
- B. 21%
- C. 0.04%
- D. 33%
|
| 3 |
The proportion of carbon dioxide in air is. |
- A. 40 percent
- B. 0.4 percent
- C. 0.04 percent
- D. 0.004 percent
|
| 4 |
The percentage of carbon dioxide in Air is: |
- A. 40%
- B. 0.4%
- C. 0.04%
- D. 33%
|
| 5 |
The height of Stratosphere form sea level is. |
- A. 50 km
- B. 55 km
- C. 60 km
- D. 45 km
|
| 6 |
Thickness of atmosphere is. |
- A. 200 km
- B. 1000 km
- C. 1200 km
- D. 1600 km
|
| 7 |
Ozone is a gas present in. |
- A. Troposphere
- B. Stratosphere
- C. Upper stratosphere
- D. Meso sphere
|
| 8 |
Ultra violet radiations can cause. |
- A. Cancer
- B. Eye disease
- C. None
- D. Both a and b
|
| 9 |
At present population is 2.6 percent, in how many years the population of Pakistan will double. |
- A. 47 years
- B. 37 years
- C. 27 years
- D. 17 years
|
| 10 |
At present average annual population growth rate in Pakistan is 2.6 percent. In how many year it will become double?  |
- A. 47 year 
- B. 37 year 
- C. 17 year
- D. 27 year 
|