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Environmental Engineering in CE

Environmental Engineering in CE
Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre.

1050
332
2
42

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Environmental Engineering in CE
Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.

Reduce SO₂ content in
None of these
Catalytically convert SO₂ to SO₃ in
Increase the dew point of

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Environmental Engineering in CE
The common pollutant generated in chlor-alkali industry and battery manufacture is

Phosphate
None of these
Brine
Mercury

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Environmental Engineering in CE
The pH value of oxidised sewage is about

7.3
6.2
13.4
1.8

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Environmental Engineering in CE
The Killer gas which caused Bhopal gas tragedy in 1984 was

Sulphur dioxide
Methyl iso-cynate (MIC)
Phosgene
Carbon monoxide

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Environmental Engineering in CE
Sound produced by an automobile horn heard at a distance of 1.5 metres corresponds to about __________ decibels.

180
150
120
90

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