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Civil Engineering - Water Supply Engineering

Exercise : Water Supply Engineering - Section 7
41.
Rapid sand filter
should be preceeded by coagulation and sedimentation
uses rapid sand as filter media
is used after slow sand filtering has been done
can combine disinfection also.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Pick up the correct statement from the following :
Copper pipes are highly resistant to acidic and alkaline water
Wrought iron pipes are lighter than cast iron pipes
Wrought iron pipes corrode quickly and are less durable
Wrought iron pipes coated with zinc, are called galvanised iron pipes
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Rapid gravity filters can remove bacterial impurities up to a maximum of
50%
60%
70%
80%
90%.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
Cast iron pipes
are widely used in city water supplies
resist corrosion satisfactorily
may last for 100 years
are normally manufactured in lengths of about 3.5 m
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Run off is the quantity of water which flows
in sewer pipes
due to leakage in pipes
in rivers
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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