Criteria for drinking water quality recommended by WHO includes -
Ans. is 'a' i.e., Colour < 15 TCU; 'b' i.e., pH 6.5-8.5; 'c' i.e., Chloride 200-600 mg/l
Colour < 15 TCU
pH 6.5-8.5
Chloride 200-600 mg/1
All