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Environmental Engineering in CE

Environmental Engineering in CE
Green house effect is accentuated by

Rapid industrialisation
Deforestation
Increased transportation activity
All of these

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Environmental Engineering in CE
80% less than 200 mesh size particles are called

Smoke
Aggregates
Grit
Powder

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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?

H₂
SO₃
CO₂
N₂

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Environmental Engineering in CE
When the concentration of SO₂ in air is greater than __________ ppm, it gives a pungent smell.

4
1
0.1
0.01

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Environmental Engineering in CE
Salt content in sea water is about __________ percent.

1
0.5
3.5
10

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Environmental Engineering in CE
Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels.

105
185
135
160

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