Q.1.

For complete stabilisation of organic matter in polluted water, it takes

Q.2.

The storage capacity of a reservoir may be divided into three zones. The lowest zone is

Q.3.

P.V.C. pipes can withstand pressure bead of water upto

Q.4.

The factor for the selection of pumping station site, is

Q.5.

In a rapid gravity filter

Q.6.

The population of a city inis 50,The average increase in population over last 8 decades isand average incremental increase during 8 decades isThe population of the city based on incremental method, in the yearwill be

Q.7.

Low turbidity of water is detected by

Q.8.
Sunlight
Q.9.
Pick up the correct statement from the following
Q.10.
What is turbidity?
Q.11.
Hard water contains
Q.12.
Aeration of water is done to remove
Q.13.
Turbidity of raw water is a measure of
Q.14.
Time of concentration
Q.15.
Surge tanks are used
Q.16.
What causes hardness in water?
Q.17.
Acidity in water is caused due to
Q.18.
Hard water for public water supply is discarded because
Q.19.
The level of underground water is called
Q.20.
The population growth curve is
Q.21.
Water supply system includes
Q.22.
Asbestos pipes are
Q.23.
If pH value of water is
Q.24.
Continuous flow of water can be expected from
Q.25.
Hardness of water is caused due to
Q.26.
Corrosion of a pipe
Q.27.
The maximum depth of sedimentation tanks is limited to
Q.28.
Which method is used to measure the color of water?
Q.29.
Rapid gravity filter can only remove turbidity of water upto
Q.30.
The efficiency of sedimentation tank does not depend upon