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Environmental Engineering in CE

Environmental Engineering in CE
Noise level in a quiet private business office is about __________ decibels.

25
50
70
85

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Environmental Engineering in CE
During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.

Sedimentation
Both B and C
Filtration
Digestion

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Environmental Engineering in CE
Presence of nitrogen and phosphorous in waste water discharged into lakes and ponds causes

Foaming
Odour nuisances
Undesirable plant growth
Turbidity

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Environmental Engineering in CE
Ozone is

A secondary pollutant
Both B & C
Impervious to ultra-violet rays
A primary pollutant

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Environmental Engineering in CE
TLV of NO₂ & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO₂ causes

Bronchitis
Skin disorder
Cancer
Bone disease

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

1000
500
10000
5

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MORE MCQ ON Environmental Engineering in CE

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