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Environmental Engineering in CE

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

1
250
10
1000

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Environmental Engineering in CE
Foul odour and bad taste of water is removed by treating with

Copper sulphate
Bleaching powder
Alum
Activated carbon

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Environmental Engineering in CE
Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)?

Carbon monoxide
Benzopyrene
Peroxyacyl nitrate
Sulphur dioxide

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Environmental Engineering in CE
Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes

Gastritis & diarrhea
All of these
Nervous depression
Paralysis of muscles & loss of appetite

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Environmental Engineering in CE
Which is the most practical and economical method for removal of suspended solid matter from polluted water?

Sedimentation
Biological oxidation
Chlorination
Skimming off

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Environmental Engineering in CE
__________ content of the phosphate rock is the pollutant of primary interest in a phos-phatic fertiliser plant.

Calcium
Phosphorous
Sulphur
Fluorine

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MORE MCQ ON Environmental Engineering in CE

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