Civil Engineering - Water Supply Engineering

21.
An ideal sand for filters should be
free from dirt and other impurities
uniform in nature and size
hard and resistant
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
The maximum non-verticality of the bore of a well 200 m deep, may be permitted up to
25 cm
50 cm
75 cm
100 cm
150 cm.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
By adding 1 ml of orthotolidine solution to 100 ml chlorinated water taken after contact period, the residual chlorine makes the colour of solution
yellowish
greenish
bluish
reddish
violet.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

24.
From the surface of reservoir, evaporation may be minimised by sprinkling
Spirit
Hydrochloric acid
Cetyl alcohol
Methane
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

25.
Gravity conduits are generally in the form of
canals
flumes
aqueduct
tunnels
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.