Civil Engineering - Waste Water Engineering

31.
Dilution method of disposing off sewage, is not preferred to
when sewage is fresh
when diluting water has high dissolved oxygen content
when diluting water is used for water supply near the point of sewage disposed
when the diluting water is having flow currents
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
For house drainage minimum gradient is
1 in 60
1 in 80
1 in 10
1 in 400
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is
1045 mm
1065 mm
1075 mm
1095 mm.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
The ratio of minimum hourly flow to the average flow of sewage is
1/4
1/3
1/2
3/4
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to
initial demand
first stage demand
carbonaceous demand
all of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.