Environmental Engineering (3160611) MCQs

MCQs of House Drainage

Showing 41 to 50 out of 53 Questions
2 3 4 5 6
41.

How many traps are present based on the shape?

(a)

1
(b)

2
(c)

3
(d)

4
Answer:

Option (c)

42.

 What is the size of rain water pipe? What is the size of rain water pipe?

(a)

25 mm
(b)

50 mm
(c)

75 mm
(d)

100 mm
Answer:

Option (c)

43.

_______ corrodes internal walls of sewers.

(a)

Hydrochloric acid
(b)

Sulphuric acid
(c)

Sulphur dioxide
(d)

Carbon dioxide
Answer:

Option (b)

44.

 H2S gas is _______ to generate sulphuric acid.

(a)

 Oxidised
(b)

Reduced
(c)

Oxidised and reduced
(d)

Sulphonated
Answer:

Option (a)

45.

 Hydrogen sulphide is formed under ______ conditions.

(a)

 Aerobic
(b)

 Anaerobic
(c)

Anaerobic and aerobic
(d)

 Any
Answer:

Option (b)

46.

 What is the flow velocity condition required for the formation of hydrogen sulphide

(a)

 Low
(b)

Medium
(c)

High
(d)

Rapid
Answer:

Option (a)

47.

 What is the temperature condition required for hydrogen sulphide formation

(a)

Warm
(b)

Cold
(c)

 Extreme cold
(d)

Intermediate
Answer:

Option (a)

48.

The rate of release of H2S is high at the points of 

(a)

 Low velocity
(b)

 Low flow
(c)

 Low turbulence
(d)

High turbulence
Answer:

Option (d)

49.

What is the exposure limit of H2S in a day

(a)

 2 ppm
(b)

1 ppm
(c)

 0.5 ppm
(d)

 0.1 ppm
Answer:

Option (d)

50.

What is the limit of H2S exposure for 30 minutes?

(a)

0.5 ppm
(b)

1 ppm
(c)

1.5 ppm
(d)

2 ppm
Answer:

Option (d)

Showing 41 to 50 out of 53 Questions
2 3 4 5 6