As per I.S. 456 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1978, the pH value of water shall be?$

As per I.S. 456 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1978, the pH

1.	As per I.S. 456 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1978, the pH value of water shall be?$
A.	Less than 6
B.	Not less than 6
C.	Equal to 6
D.	Equal to 7
Answer» C. Equal to 6