UPSC Civil Service Exam Questions - Civil Engineering Questions and Answers

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Which one of the following statements is not correct ?

Settling and sludge digestion occur in septic tanks in one compartment

Settling and sludge digestion occur in Imhoff tank in different compartments

Septic tank is a low-rate anaerobic unit whereas an Imhoff tank is a high rate anaerobic unit

The rate of sludge accumulation in septic tank is approximately 40-70 litres/capita/year

Answer : Option C

Explanation :

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