Q.

Rapid sand filters are cheap and economical as compared to slow sand filters.

A. True
B. False
Answer» A. True
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Discussion

Vivek Kaliramana
1 year ago

Any explanation for this answer i think you just copy MCQ from some competition preparation books and paste on your site . RSF is not cheap it requires regular cleaning in 2-3 days then how's your answer match if it's your answer.
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