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  3. Manipal Engineering

Manipal Engineering Manipal Engineering Solved Paper-2011

  • question_answer
    In physical adsorption, the gas molecules are held by solid surfaces through

    A)  strong chemical forces

    B)                         van der waals forces

    C)                         metallic bonds

    D)                         gravitational forces

    Correct Answer: B

    Solution :

    Physical adsorption involves physical forces i.e., van der Waals forces.


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