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Environmental Engineering in CE

Environmental Engineering in CE
The maximum CO₂ is emitted into the atmosphere by

Combustion
Biomass burning
Trees
Urea

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Environmental Engineering in CE
Oil and grease present in an emulsified state in waste water discharged from industries can be removed by

Settling out using chemical reagents
Skimming off
Chlorination
Biological oxidation

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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.

140
200
170
120

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Environmental Engineering in CE
Sulphur dioxide present in the industrial chimney exhaust gases causes

Respiratory & lung disease
All of these
Corrosion of building materials
Reduction in plant's productivity owing to acid rain

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Environmental Engineering in CE
Presence of bacteria in potable (drinking) water causes

Disease
Turbidity
Bad taste & colour
Bad odour

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Environmental Engineering in CE
The function of skimming tank in sewage treatment is to remove __________ substances.

Suspended solid
Oil & fatty
Gritty & inorganic
Dissolved solid

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MORE MCQ ON Environmental Engineering in CE

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