| 1 |
Where the ozone make a protective layer? |
- A. Troposphere 
- B. Stratosphere 
- C. Mesosphere 
- D. Thermosphere  
|
| 2 |
------------------ is one of oldes sources of heat. |
- A. Petroleum
- B. natural gas
- C. None
- D. Coal
|
| 3 |
How much population of Pakistan depends on agriculture |
- A. 90%
- B. 80%
- C. 60%
- D. 50%
|
| 4 |
About ........... percent population of Pakistan is dependent upon agriculture. |
- A. 90%
- B. 80%
- C. 60%
- D. 50%
|
| 5 |
Atmosphere is made of................. percent oxygen. |
|
| 6 |
The height of troposphere above earth's surface is |
- A. 10 km 
- B. 18 km
- C. 20 km 
- D. 40 km 
|
| 7 |
The percentage of carbon dioxide in Air is: |
- A. 40%
- B. 0.4%
- C. 0.04%
- D. 33%
|
| 8 |
The total number of people living together in an area at a particular time is called |
- A. special
- B. population
- C. community
- D. habitat
|
| 9 |
Ultra violet radiations can cause. |
- A. Cancer
- B. Eye disease
- C. None
- D. Both a and b
|
| 10 |
Teh total number of persons living in an area is called. |
- A. Species
- B. Population
- C. Community
- D. habitat
|
