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UPSC Civil Service Exam Questions - Engineering

Q1:

Which of the following waste disposal tasks are achieved by a septic tank with its dispersion tranch ?
1. Aerobic sluge digestion
2. Settling and anaerobic sludge digestion
3. Anaerobic sewage stabilisation
4. Bio-oxidation of effluent
Select the correct answer using the codes given below :

A 1 and 3

B 3 and 4

C 2 and 4

D 1 and 4

ANS:C - 2 and 4

Sewage stabilisation is done aerobically for a septic tank.