In MKS system for measurement of length, mass and time which fundamental units are used
Centimeters,kilograms and sec
Metre,grams and sec
metre ,kilogram and second
metre ,kilogram and microsecond
50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pKb of ammonia solution is 4.75, the pH of the mixture will be : Option: 1 3.75 Option: 2 4.75
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