The velocity time graph of a body moving in a straight line is shown in figure.
The ratio of displacement to distance travelled by the body in time is :
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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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