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Environmental Engineering in CE

Environmental Engineering in CE
Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called

Stratosphere
Troposphere
Mesosphere
Thermosphere

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Environmental Engineering in CE
'Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a 'particulate'?

None of these
Photochemical smog & soot
Smoke & fumes
Dust & mists

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Environmental Engineering in CE
Fine grit present in sewage is removed in the __________ during sewage treatment.

Grit chamber
Trickling filter
Detritus tank
Skimming tank

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Environmental Engineering in CE
For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm.

500
1000
10000
5

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Environmental Engineering in CE
'Pneumoconiosis' is a disease caused by the inhalation of __________ dust.

Uranium ore
Coal
Lime
Iron ore

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Environmental Engineering in CE
TLV of aldrin in public water supply system is about __________ μg/litre.

17
1097
0.5
357

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