Civil Engineering - Water Supply Engineering

6.
Percussion drilling is unsuitable in
unconsolidated sand
unconsolidated gravel
quick sand
consolidated rocks.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
Disinfection of water with ozone is not good because
it vanishes before water reaches the consumers
it removes the colour, taste and odour from water as bacterias
it adds taste to the water
it is more efficient than chlorine in killing bacterias
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
An earth formation which, although porous and capable of absoring water does not provide an appreciable supply to wells, is known as
acquifer
aquiclude
aquifuge
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
Mathamoglobinemia, or blue baby disease is caused due to
chlorides
nitrites
nitrates
sulphides.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
The main process to purify water by filtration, is
mechanical straining
flocculation and sedimentation
biological metabolism
electronic change
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.