Water filtration rate in a slow sand filter ranges from __________ lit – McqOptions

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1.	Water filtration rate in a slow sand filter ranges from __________ litres/m¬¨‚â§/hr.#
A.	10 to 20
B.	100 to 200
C.	1500 to 2500
D.	4000 to 5000
Answer» C. 1500 to 2500

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