Civil Engineering - Waste Water Engineering
Exercise :: Waste Water Engineering - Section 1
26.
Clogging of sewers, is caused due to
A. silting B. low discharge C. greasy and oily matters D. domestic wastes thrown in manholes E. all the above.
Answer: Option E
Explanation:
27.
A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is
A. 0.30 m/sec B. 0.35 m/sec C. 0.40 m/sec D. 0.45 m/sec E. 0.50 m/sec.
Answer: Option D
Explanation:
28.
The coagulant widely used for sewage treatment, is
A. alum B. ferric chloride C. ferric sulphate D. chlorinated copperas.
Answer: Option B
Explanation:
29.
House connections to the laterals is generally made by
A. R.C.C. B. P.C.C. C. Cast iron D. Glazed stonewares.
Answer: Option D
Explanation:
30.
The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is
Answer: Option B
Explanation:
