| 1 |
A strange bitter smell noticed near photo copier machine is of. |
- A. H<sub>2</sub>S
- B. SO<sub>2</sub>
- C. O<sub>2</sub>
- D. O<sub>3</sub>
|
| 2 |
Which gas is also known as life gas for plants. |
- A. CO
- B. CO<sub>2</sub>
- C. O<sub>2</sub>
- D. NO<sub>2</sub>
|
| 3 |
Which metal present in acid rain affect the aquatic life by clogging fish gills? |
- A. Lead
- B. Chromium
- C. Aluminium
- D. Mercury
|
| 4 |
Carbon monoxide is harmful to use because it: |
- A. Paralyses lungs
- B. Damages lungs
- C. Reduce oxygen carrying ability of hemoglobin
- D. Make the blood coagulate
|
| 5 |
What gas is the major constituent of troposphere? |
- A. Nitrogen
- B. Oxygen
- C. Hydrogen
- D. Both a and b
|
| 6 |
The layer above troposphere extend upto 50 kilometers called. |
- A. Mesosphere
- B. Hydrosphere
- C. Stratosphere
- D. Thermosphere
|
| 7 |
At which region all weather occurs? |
- A. Troposphere
- B. Stratosphere
- C. Mesosphere
- D. Thermosphere
|
| 8 |
Thermosphere lies beyond. |
- A. Stratosphere
- B. Troposphere
- C. Mesosphere
- D. Biosphere
|
| 9 |
Global warming causes rising of the sea level. The cause of global warming is. |
- A. CO<sub>2</sub> gas.
- B. SO<sub>2</sub>gas.
- C. NO<sub>2</sub>gases.
- D. O<sub>3</sub>gas.
|
| 10 |
The formula of ozone is. |
- A. O<sub>2</sub>
- B. O<sub>3</sub>
- C. O
- D. CO
|
