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Environmental Engineering in CE

Environmental Engineering in CE
Water filtration rate in a slow sand filter ranges from __________ litres/m²/hr.

1500 to 2500
100 to 200
10 to 20
4000 to 5000

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Environmental Engineering in CE
TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm.

1000
5
2000
100

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Environmental Engineering in CE
Sulphur dioxide present in the industrial chimney exhaust gases causes

Reduction in plant's productivity owing to acid rain
Corrosion of building materials
Respiratory & lung disease
All of these

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Environmental Engineering in CE
The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the

Global warming
Both B and C
Catalytic conversion
Green house effect

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Environmental Engineering in CE
Beyond what concentration of H₂S in air, acute danger to human life exists?

50 ppm
300 ppm
700 ppm
100 ppm

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

0.1
4
0.01
1

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