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Environmental Engineering in CE

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

357
17
1097
0.5

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Environmental Engineering in CE
As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m³.(μg-microgram)

90
10
750
800

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Environmental Engineering in CE
When the concentration of SO₂ in air is greater than __________ ppm, it gives a pungent smell.

1
4
0.1
0.01

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Environmental Engineering in CE
From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.

1
50
500
5

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Environmental Engineering in CE
Salt content in sea water is about __________ percent.

0.5
1
10
3.5

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Environmental Engineering in CE
Disinfection of water is done to remove

Color
Bacteria
Foul odour
Bad taste

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