Civil Engineering - Waste Water Engineering

1. 

The pH value of fresh sewage is usually

A. equal to 7
B. more than 7
C. less than 7
D. equal to zero.

Answer: Option B

Explanation:

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

2. 

The moisture content of a sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is

A. 25%
B. 50%
C. 10%
D. 5%.

Answer: Option B

Explanation:

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

3. 

Inter-distance between ventilation columns in a sewer line is kept

A. 25 to 50 m
B. 50 m to 100 m
C. 100 m to 150 m
D. 150 m to 300 m.

Answer: Option D

Explanation:

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

4. 

If q is the average sewage flow from a city of population P, the maximum sewage flow

A.
B.
C.
D.

Answer: Option C

Explanation:

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

5. 

The factor responsible for purification of sewage in river is

A. Hydrology
B. Dissolved oxygen in water
C. Temperature
D. Turbulence
E. All the above.

Answer: Option E

Explanation:

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

1 2 3 4 5 6 7 8 9 10 Next »