New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Whenadetergentisaddedtopure water, its surface tension

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    A increases Correct Answer Incorrect Answer
    B decreases Correct Answer Incorrect Answer
    C remains constant Correct Answer Incorrect Answer
    D becomes infinite Correct Answer Incorrect Answer

    Solution

    When Soaps and detergents are added to water, they weaken the strength of the skinonthewater'ssurfaceduetosurfacetension by interfering with hydrogen bonding between water molecules. It happens because the polar end of the soap or detergent is also attracted to the water, thereby decreasing the surface tension.

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