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The effective size of a rapid sand filter is ______

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+1 vote
in Environmental Engineering by (81.4k points)
The effective size of a rapid sand filter is ______

(a) 0.45mm

(b) 0.7mm

(c) 0.8mm

(d) 0.9mm

I had been asked this question in unit test.

My doubt is from Rapid Sand Filter topic in section Filtration of Environmental Engineering

1 Answer

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by (693k points)
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Best answer
The correct choice is (a) 0.45mm

Best explanation: The effective size of a rapid sand filter lies in the range of 0.35-0.6mm and its common value is 0.45mm.

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