PH value of drinking water as per wh0 standards should lie between a)5 and 5.5 b)6 and 7 c) 7 and 7.5 d)7 and 8.5*

PH value of drinking water as per wh0 standards should lie between  
a)5 and 5.5
b)6 and 7
c) 7 and 7.5
d)7 and 8.5*
by

1 Answer

Answer :

d)7 and 8.5*
by

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