Environmental Engineering
In facultative stabilization pond, the sewage is treated by

Algae only
Aerobic bacteria only
Sedimentation
Dual action of aerobic bacteria and anaerobic bacteria

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Environmental Engineering
Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.Reason R: The sand used in slow sand filters is finer than that in rapid sand filtersSelect your answer based on the coding system given below:

Both A and R is true and R is the correct explanation of A
A is false but R is true
Both A and R is true but R is not the correct explanation of A
A is true but R is false

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Environmental Engineering
Assertion A: The consumption of water increases with increase in the distribution pressure.Reason R: Higher distribution pressure causes more loss and waste of waterSelect your answer according to the coding system given below

Both A and R is true but R is not the correct explanation of A
A is false but R is true
A is true but R is false
Both A and R is true and R is the correct explanation of A

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