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UPSC Civil Service Exam Questions - Engineering

Q1:

Which of the following treatment(s) will be indicated for a rural water supply from a deep groundwater source ?
1. Sedimentation.
2. Alum dosage.
3. Potassium permanganate dosing.
4. Bleaching powder application.
Select the correct answer using the codes given below :

A 1, 2 and 3

B 1, 2 and 4

C 3 and 4

D 4 alone

ANS:D - 4 alone

Option 4 is right.

For rural areas, we need to treat the water by chlorination hence we apply bleaching powder which gives chlorine, and known as hyper chlorination.