| 1 |
Ultraviolet radiations can causes. |
- A. Hepatitis
- B. Asthma
- C. Skin cancer
- D. Night blindness
|
| 2 |
Which is not a character of SO<sub>2</sub> |
- A. it is a colourless gas
- B. It has irritating smell
- C. It causes suffocation
- D. It do not form sulphuric acid
|
| 3 |
75% atmosphere mass lies in how many kilometers. |
- A. 11 km
- B. 30 km
- C. 50 km
- D. 85 km
|
| 4 |
99% of atmosphere consists of . |
- A. N<sub>2 </sub>and H<sub>2</sub>
- B. N<sub>2</sub>and O<sub>2</sub>
- C. N<sub>2</sub>and CO<sub>2</sub>
- D. O<sub>2</sub>and CO<sub>2</sub>
|
| 5 |
Global warming is because of. |
- A. Absorption of infrared radiation emitted by earth surface.
- B. Absorption of infrared radiation coming from sun.
- C. Absorption of infrared Ultraviolet coming from the sun.
- D. Emission of ultraviolet radiation from the earth's surface.
|
| 6 |
Thermosphere lies beyond. |
- A. Stratosphere
- B. Troposphere
- C. Mesosphere
- D. Biosphere
|
| 7 |
The green house effect is proportional to the amount of which gas in air. |
- A. CO<sub>2</sub>
- B. O<sub>2</sub>
- C. N<sub>2</sub>
- D. All of them
|
| 8 |
Higher concentration of CO causes. |
- A. Fatique
- B. Headache
- C. Both of them
- D. None of them
|
| 9 |
Ozone is beneficial for us as it |
- A. Absorb infrared radiation.
- B. Absorb Ultraviolet radiations.
- C. Absorb Chlorofluorocarbons
- D. Absorb Air pollulant
|
| 10 |
Just above the Earth's surface is |
- A. Mesosphere
- B. Stratosphere
- C. Theremosphere
- D. Troposphere
|
