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Environmental Engineering

Environmental Engineering
A pipe which is installed in the house drainage to preserve the water seal of traps is called

Anti-siphonage pipe
Soil pipe
Vent pipe
Waste pipe

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Environmental Engineering
The detention period for oxidation ponds is usually kept as

48 hours
10 to 15 days
24 hours
3 months

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Environmental Engineering
For the same solid content, if the quantity of sludge with moisture content of 98% is X, then the quantity of sludge with moisture content of 96% will be

X
2X
X/2
X/4

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Environmental Engineering
Which of the following is not a water borne disease?

Typhoid
Dysentery
Cholera
Malaria

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Environmental Engineering
Alum as a coagulant is found to be most effective when pH range of water is

8 to 10
6 to 8
4 to 6
2 to 4

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Environmental Engineering
The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally

More and more
More and less
Less and less
Less and more

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