Environmental Engineering MCQ Questions & Answers | Civil Engineering

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1.
Which of the following values of pH represents a stronger acid?

A. 2

B. 5

C. 7

D. 10

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2.
The distribution mains are designed for

A. Maximum daily demand

B. Maximum hourly demand

C. Average daily demand

D. Maximum hourly demand on maximum day

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3.
Sewage treatment units are designed for

A. Maximum flow only

B. Minimum flow only

C. Average flow only

D. Maximum and minimum flow

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4.
For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as

A. 4.5 to 6.0

B. 6.5 to 8.0

C. 8.5 to 10.0

D. 10.5 to 12.0

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5.
The pathogens can be killed by

A. Nitrification

B. Chlorination

C. Oxidation

D. None of the above

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