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Safe limit of water fluoride level is...

Safe limit of water fluoride level is

A

`0.1 xx 0.4 mg//litre`

B

`0.5 xx 0.8 mg//litre`

C

`0.9 xx 1.2 mg//litre`

D

`1.3 xx 1.6 mg//litre`

Text Solution

Verified by Experts

The correct Answer is:
B
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