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Environmental Engineering in CE

Environmental Engineering in CE
Fresh sewage is __________ in nature.

Highly acidic
Neutral
Acidic
Alkaline

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

Coal
Iron
None of these
Silica

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Environmental Engineering in CE
Insufficient washing of sand grains in a rapid sand filter causes

Air binding
Shrinkage of filtering media
Mud balls
Expansion of filtering media

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Environmental Engineering in CE
Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes

All of these
Anaemia
Nervous system disorder
Blood poisoning

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Environmental Engineering in CE
If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur.

50
1000
500
3000 (i.e. 0.3%)

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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 AC
230 V AC
30 to 70 kV DC

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