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31.

The growth of population may be conveniently represented by

A.	semi-logarthmic curve	B.	logistic curve
C.	straight line curve	D.	all of these

32.

The yield of a surface stream may be obtained by

A.	cross-section velocity method	B.	strem gauging
C.	chemical method	D.	all of these

33.

The yield of a underground source may be obtained by

A.	pumping test	B.	recupating test
C.	both (a) and (b)	D.	none of these

34.

The yield of the well dpends upon the

A.	permeability of the soil	B.	position of water table
C.	depth of well in impervious layer	D.	all of these

35.

The yield of the well is measured in

A.	cum / h	B.	litres / h
C.	either (a) or (b)	D.	none of these

36.

The amount of water collected in a reservoir is divided into three portions and the order of their existance from bottom to the top is

A.	useful storage, surcharge storage, dead storage	B.	useful storage, dead storage, surcharge storage
C.	dead storage, useful storage, surcharge storage	D.	none of the above

37.

Which of the following statement is correct?

A.	The rate of silting in a reservoir is more in the beginning and less in the end.	B.	At the economical height of a dam, its cost per million cubic metre of storage is minimum.
C.	The percentage of water required for public use amounts to about 10% of the total water requirements.	D.	all of the above

38.

In India, as per Indian standards, water consumption per capita per day for domestic purpose is

A.	85 litres	B.	100 litres
C.	115 litres	D.	135 litres

39.

The domestic use of water amounts to

A.	20%	B.	30%
C.	40%	D.	50%

40.

The average consumption of water for commercial use varies from 20 to 25% of total consumption.

Yes