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Environmental Engineering in CE

Environmental Engineering in CE
Fresh sewage is __________ in nature.

Acidic
Highly acidic
Neutral
Alkaline

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Environmental Engineering in CE
Disinfection of water is done to remove

Bacteria
Color
Bad taste
Foul odour

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Environmental Engineering in CE
Ionisation potential employed in the industrial electrostatic precipitator is of the order of

230 V DC
30 to 70 kV DC
30 to 70 kV AC
230 V AC

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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)

750
800
10
90

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Environmental Engineering in CE
Average human body contains about __________ percent water by weight.

40
70
20
85

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

4
0.01
1
0.1

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