Civil Engineering - Waste Water Engineering

1. 

To maintain aerobic biological activity, the moisture content of the compost mass should be about

A. 45%
B. 50%
C. 55%
D. 60%.

Answer: Option C

Explanation:

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2. 

The sewer that unloads the sewage at the point of treatment is called

A. main sewer
B. outfall sewer
C. branch sewer
D. house sewer.

Answer: Option B

Explanation:

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3. 

No treatment of the sewage is given if dilution factor is

A. less than 150
B. between 150 to 200
C. between 200 to 300
D. between 400 to 500
E. more than 500

Answer: Option E

Explanation:

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4. 

R.M.O. expenses include

A. running expenses
B. maintenance expenses
C. operation expenses
D. all the above.

Answer: Option D

Explanation:

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5. 

For drainage pipes in buildings the test applied before putting them to use, is

A. water test
B. smoke test
C. straightness test
D. all the above.

Answer: Option B

Explanation:

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