SSC JE Civil Engineering 2013 Solved Paper

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Question : 155 of 200

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Which one of the following sequences is the most suitable for treating raw surface water to make it suitable for drinking purpose?

Screening → filtration → sedimentation → disinfection
Screening → disinfection → sedimentation → filtration
Screening → sedimentation → disinfectioin → filtration
Screening → sedimentation → filtration → disinfection

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