Water Supply Engineering - Section 1 (6)

Directions to Solve

Water Supply Engineering - Section 1

This is an engineering field and if you think your aptitude level
is good in this field then you can solve the MCQs available in this section.

41.

The specific retention is least in case of

A.	Clay
B.	Sand
C.	Silt
D.	Coarse gravel.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

42.

Pick up the incorrect statement from the following regarding fire hydrants

A.	Fire hydrants are fitted in water mains at 100 m to 150 m apart at fire
B.	The minimum water pressure hydrants, is kept 1.5 kg/cm2
C.	The water at pressure 1 to 1.5 kg/cm2 is made available for 4 to 5 hours for constant use
D.	None of these.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

43.

Pick up the correct statement from the following :

A.	Excess quantities of iron and manganese in water, cause discolouration of clothes
B.	Lead and barium salts have toxic effect
C.	Arsenic and selenium are poisonous to human health
D.	Higher copper content affects the lungs
E.	All the above.

Answer: Option E

Explanation:

No answer description available for this question. Let us discuss.

44.

The transitional middle portion of a logistic curve follows

A.	a geometric growth
B.	a logarithmic growth
C.	a first over curve
D.	a constant rate.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

45.

Acidity in water is caused due to

A.	Mineral acids
B.	Free CO2
C.	Iron sulphate
D.	Aluminium sulphate
E.	All the above.

Answer: Option E

Explanation:

No answer description available for this question. Let us discuss.

46.

Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be

A.	nil
B.	5
C.	10
D.	15
E.	20

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

47.

In slow sland filters, the turbidity of raw water can be removed only up to

A.	60 mg/litre
B.	75 mg/litre
C.	100 gm/litre
D.	150 mg/litre.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

48.

As per IS : 1172-1963, water required per head per day for average domestic purposes, is

A.	50 litres
B.	65 litres
C.	85 litres
D.	105 litres
E.	135 litres.

Answer: Option E

Explanation:

No answer description available for this question. Let us discuss.

1
2
3
4
5
6
7