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Waste Water Engineering

Waste Water Engineering
Which one of the following resists hydrogen sulphide corrosion?

Glazed ware
Asbestos cement
R.C.C.
Glazed stone wares

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Waste Water Engineering
The detention time of a circular tank of diameter d and water depth H, for receiving the sewage Q per hour, is

d (0.285d + 0.011H)/Q
d (0.785d + 0.011H)/Q
d² (0.011d + 0.785H)/Q
d (0.022d + 0.085H)/Q

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Waste Water Engineering
The sewer which received discharge from two or more main sewers, is known as

An intercepting sewer
A main sewer
An outfall sewer
A trunk sewer

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, is

1.625 D
1.350 D
1.425 D
1.250 D

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Waste Water Engineering
In trickling filter, B.O.D. is reduced to

40 to 60%
60 to 80%
30 to 40%
80 to 90%

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Waste Water Engineering
Which one of the following part of human body withstands minimum radiation?

Thyroid
Kidneys
Ovaries/testis
Eyes

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