Environmental Engineering (3160611) MCQs

MCQs of Water Supply scheme/System Components

Showing 1 to 10 out of 28 Questions
1 2 3
1.

Surge tanks are used

(a)

for storage water
(b)

to increase the velocity in a pipeline
(c)

as overflow valves
(d)

to guard against water hammer.
Answer:

Option (d)

2.

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)

135 litres
Answer:

Option (d)

3.

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)

4.

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

(a)

nil
(b)

5
(c)

10
(d)

15
Answer:

Option (a)

5.

Acidity in water is caused due to

(a)

Mineral acids
(b)

Free CO2
(c)

Iron sulphate
(d)

All of above
Answer:

Option (d)

6.

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)

7.

The specific retention is least in case of

(a)

Clay
(b)

Sand
(c)

Silt
(d)

Coarse gravel.
Answer:

Option (d)

8.

B.O.D. of treated water should be

(a)

10 ppm
(b)

25 ppm
(c)

20 ppm
(d)

Nil.
Answer:

Option (d)

9.

Most commonly used pump for lifting water in water supply mains, is

(a)

axialflow pump
(b)

reciprocating pump
(c)

rotary type pump
(d)

centrifugal pumps
Answer:

Option (a)

10.

Economic height of a dam is the height corresponding to which

(a)

cost of the dam per unit of storage is minimum
(b)

amount of silting is less
(c)

cost of dam per unit storage is maximum
(d)

free board provided is least
Answer:

Option (a)

Showing 1 to 10 out of 28 Questions
1 2 3