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ENVIRONMENTAL ENGINEERING IN CE

Environmental Engineering in CE
For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm.

500
5
1000
10000

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Environmental Engineering in CE
__________ can not control the noise pollution.

Green house gases
Use of silencers
Vibration damping
Tree plantation

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Environmental Engineering in CE
Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect?

CO₂
N₂
H₂
SO₃

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Environmental Engineering in CE
The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the

Catalytic conversion
Green house effect
Global warming
Both B and C

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Environmental Engineering in CE
Maximum permissible turbidity in potable water is __________ ppm.

1000
10
250
1

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