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Environmental Engineering in CE

Environmental Engineering in CE
COD of raw municipal sewage may be in the range of about __________ mg/litre.

90-120
1-2
5-10
1500-2500

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Environmental Engineering in CE
__________ plant emits large amount of SO₂ as an air pollutant.

Chloralkali
Sulphuric acid
Nitric acid
Iron & steel

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Environmental Engineering in CE
__________ can not control the noise pollution.

Green house gases
Tree plantation
Use of silencers
Vibration damping

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Environmental Engineering in CE
Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.

Hydrocarbon fuel
Low amount of excess combustion air
Large quantity of excess combustion air
Pulverised coal as fuel

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Environmental Engineering in CE
The main industrial source of emission of hydrogen sulphide air pollutant is

Metallurgical roasting & smelting plant
Pulp and paper plant
Coal based thermal power plants
Petroleum refineries

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Environmental Engineering in CE
Most of the bacteria in sewage are

Anerobic
Parasitic
Saprophytic
None of these

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MORE MCQ ON Environmental Engineering in CE

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