A force acts at a point . Then the magnitude of torque about the point will be . The value of is ________. Option: 1 195 Option: 2 200 Option: 3 390 Option: 4 410
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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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