| 1 |
Our planet earth consists of ____________ natural Spheres. |
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| 2 |
About 99% atmosphere's lies within: |
- A. 30 kilometre
- B. 35 kilometre
- C. 15kilometre
- D. 11 kilometre
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| 3 |
Atmosphere is divided into; |
- A. 3 regions
- B. 4 regions
- C. 5 regions
- D. 6 regions
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| 4 |
Mesosphere has a temperature range. |
- A. 17 <sup>o</sup>C - 58<sup>o</sup>C
- B. 58<sup>o</sup>C - 2<sup>o</sup>C
- C. 2<sup>o</sup>C - 93<sup>o</sup>C
- D. - 93<sup>o</sup>C
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| 5 |
In the bacterial decay, the compound of which element are emitted. |
- A. Sulphur
- B. Carbon
- C. Nitrogen
- D. All of them
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| 6 |
Effects of ozone depletion are following except the one. |
- A. Increases infectious diseases
- B. Increases crops production
- C. Can cause skin cancer
- D. Can cause climatic changes.
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| 7 |
Which is not a poisonous gas? |
- A. Ozone
- B. Chlorine
- C. Carbon di oxide
- D. All of them
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| 8 |
Which is not a part of flue gas? |
- A. Furans
- B. Dioxins
- C. HCl
- D. H<sub>2</sub>SO<sub>4</sub>
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| 9 |
Thermosphere lies beyond. |
- A. Stratosphere
- B. Troposphere
- C. Mesosphere
- D. Biosphere
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| 10 |
Infrared radiations emitted by the Earth are absorbed by. |
- A. CO<sub>2</sub> and H<sub>2</sub>O
- B. N<sub>2</sub> and O<sub>2</sub>
- C. CO<sub>2</sub>and N<sub>2</sub>
- D. O<sub>2</sub>and CO<sub>2</sub>
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