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Civil Engineering - Waste Water Engineering

Exercise : Waste Water Engineering - Section 5
16.
Stone ware pipes are
highly resistant to sulphide corrosion
highly impervious
hydraulically efficient because of their smooth interior surface
specially suited to pressure pipes
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Skimming tanks are
used to remove the grease and oil
those from which sludge is skimmed out
tanks provided with self-cleansing screens
improved version of grit chambers.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.

Assertion (A) : The determination of pH value of sewerage is important.

Reason (R) : The efficiency of certain treatment methods depends upon the availability of pH value.

Both A and R are true and R is the correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
With self cleansing velocity in sewers
silting occurs at bottom
scouring occurs at bottom
both silting and scouring occur at bottom
neither silting nor scouring occurs at bottom.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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