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Banking Chemistry Some Important Man-Made Materials Question Bank Some Important Man-Made Materials

  • question_answer
    The principle of cleaning by soap is

    A)  surface tension                

    B)  floatation

    C)  viscosity             

    D)         elasticity

    Correct Answer: A

    Solution :

     Soaps form surface films, reduce surface tension of solution and help in removing dirt and dust by emulsifying grease.


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