The maximum allowable concentration of fluorides in drinking water is: – McqOptions

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1.	The maximum allowable concentration of fluorides in drinking water is:
A.	1.00 mg per litre
B.	1.25 mg per litre
C.	1.50 mg per litre
D.	1.75 mg per litre
Answer» D. 1.75 mg per litre

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