| 1 |
Air is being polluted rapidly due to |
- A. Industrialization
- B. Automobiles
- C. Sewage
- D. Both a & b
|
| 2 |
A pesticide is a chemical which destroys agricultural |
- A. Pests
- B. Competitors
- C. Crops
- D. Both a & b
|
| 3 |
Oxone molecule is made up by binding of three atoms of |
- A. Nitrogen
- B. Oxygen
- C. Hydrogen
- D. Carbon
|
| 4 |
Rain that falls on high areas such as mountains possesses large amount of garvitational |
- A. Heat energy
- B. Kinetic energy
- C. Electrical energy
- D. Potential energy
|
| 5 |
The biome, which has very fertile soil, rich in organic matter with maximum water holding capacity is. |
- A. Alpine forest
- B. Grassiland
- C. Desert
- D. Temperate deciduous forest
|
| 6 |
Coniferous forest located at high attitude are called. |
- A. Boreal
- B. Alpine
- C. Talga
- D. Prailes
|
| 7 |
As CFC<sub>s</sub> rise to the atmosphere ultraviolet rays release |
- A. Fluorine
- B. Chlorine
- C. Carbon
- D. Hydrogen
|
| 8 |
Which of the following is the most fragile ecosystem. |
- A. Grass land
- B. Wood land
- C. Tundra
- D. Savanna
|
| 9 |
In Sindh, the desert ecosystem is called. |
- A. Thar
- B. Sahara
- C. Gobi
- D. thal
|
| 10 |
Which of the following is NOT recycled in ecosystem? |
- A. Carbon
- B. Sulphur
- C. Energy
- D. Water
|