QuestionWater quality / BIS standards
As per the safe drinking water guidelines issued by the Bureau of Indian Standards, Government of India, what is the acceptable pH value of drinking water?
- (a) Between 7·5 and 9·5
- (b) Between 6·5 and 8·5
- (c) Between 5·5 and 7·5
- (d) Between 4·5 and 6·5
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