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Environmental Engineering in CE

Environmental Engineering in CE
Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called

Smoke
Grit
Powder
Dust

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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
In troposphere (the weather domain), the temperature 't' at height 'h' above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)

t = 15 - 0.0065h
t = 15 - 0.0035h
t = 15 + 0.0065h
t = 0.0035h -15

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Environmental Engineering in CE
World's worst radioactive pollution was caused by nuclear reactor disaster which occured in

Chernobyl (undivided U.S.S.R.)
Moscow (U.S.S.R.)
Arizona (U.S.A.)
Pensylvania (U.S.A.)

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Environmental Engineering in CE
TLV of mercury in potable (drinking) water is about __________ ppm.

0.1
1
0.001
5

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Environmental Engineering in CE
Hazardous/polluting chemical industries should have an 'exclusion zone' with a green belt and general public access prohibited around it, covering a radius of ____ metres.

100
4000
1000
400

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