Civil Engineering MCQs: 3,057 practice questions with answer choices and available explanations. Page 137 of 204.

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Civil Engineering MCQs

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A.The gases produced in sludge digestion process, contain 75% methane
B.The gases produced in sludge digestion process, contain 75% carbon dioxide
C.Sludge digestion is carried out in sludge tank
D.The process of decomposing the organic matter under controlled anaerobic conditions, is called sludge digestion
Explanation: The correct answer is The gases produced in sludge digestion process, contain 75% carbon dioxide.

Submitted by: Academy of Pakistan

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A.The sewer pipes of sizes greater than 0.4 m diameter are designed as running 2/3rd or 3/4th full at maximum discharge
B.The minimum design velocity of sewer pipes is taken as 0.8 m/sec
C.All the above
D.The sewer pipes of sizes less than 0.4 m diameter are designed as running full at maximum discharge
Explanation: The correct answer is All the above.

Submitted by: Academy of Pakistan

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