As per I.S. 456 1978, the pH value of water shall be_______________?
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.
A. Equal to 7
C. Less than 6
D. Equal to 6
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.