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Environmental Engineering in CE

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

10
90
45
115

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Environmental Engineering in CE
Hazardous/polluting chemical industries should have an 'exclusion zone' with a green belt and general public access prohibited around it, covering a radius of ____ metres.

400
1000
100
4000

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Environmental Engineering in CE
Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels.

200
170
140
120

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Environmental Engineering in CE
__________ substances present in sewage are removed in grit chamber during sewage treatment.

Fatty
Inorganic
Organic
Dissolved

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Environmental Engineering in CE
Which of the following dust collection equipments is the least efficient (for sub-micronic particles)?

Cyclone separator
Hollow wet scrubber
Dust catcher (gravity type)
Bag filter

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Environmental Engineering in CE
Which of the following is a manmade source of air pollution?

Automobile exhaust
All of these
Forest fire
Bacterial action in soil and swamp areas

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MORE MCQ ON Environmental Engineering in CE

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