InterviewSolution
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InterviewSolution
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gi0N 8t the solutionace leision of the solutionD) it increases the viscosity of the liquid4)If a detergent is dissolved in water, the surface tension of waterA) remains constantB) increasesG decreasesD) becomes zero5) When a mercury drop of radius R hrar int |
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Answer» In a soap-and-water solution the hydrophobic (greasy) ends of the soap molecule do not want to be in the liquid at all. Those that find their way to the surface squeeze their way between the surface water molecules, pushing their hydrophobic ends out of the water. This separates the water molecules from each other. Since the surface tension forces become smaller as the distance between water molecules increases, the intervening soap molecules decrease the surface tension. (C) is correct option |
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