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UPSC Civil Service Exam Questions

Q1: A river is the source of water for water supply to a town. Its water is very turbid and polluted. The correct sequence of steps for treating the river water would be :

A Presedimentation -> prechlorination -> coagulation -> sedimentation -> filtration -> post chlorination

B coagulation -> sedimentation -> post-chlorination

C coagulation -> filtration -> sedimentation -> post-chlorination

D sedimentation -> post-chlorination

ANS:A - Presedimentation -> prechlorination -> coagulation -> sedimentation -> filtration -> post chlorination

No answer description is available.



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