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Environmental Engineering in CE

Environmental Engineering in CE
Arsenic pollutant is not generated in____industries.

Any of these
Tanneries
Glass & ceramic
Beverages

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Environmental Engineering in CE
Presence of dissolved impurities of __________ is responsible for the red brownish color of water.

Iron & manganese
Carbonates
Bi-carbonates
Arsenic

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Environmental Engineering in CE
The concentration of water vapour in troposphere, which depends upon the altitude & temperature varies in the range of zero to __________ percent.

8
12
1
4

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Environmental Engineering in CE
Noise level during normal conversation among men is about __________ decibles.

115
45
90
10

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Environmental Engineering in CE
Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan

Neither A nor B
With greater number of blades
Of increased diameter
Both A & B

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Environmental Engineering in CE
The amount of coagulant needed for coagulation of water increases with(i) Increase in turbidity of water(ii) Decrease in turbidity of water(iii) Increase in temperature of water(iv) Decrease in temperature of waterThe correct answer is

(ii) and (iv)
(ii) and (iii)
(i)and(iv)
(i) and (ii)

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