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6th Class Science Separation of Substances Question Bank Separation of Substances

  • question_answer
    Which of the following separation techniques is used for separating a mixture of two or more gases?

    A)  Sedimentation

    B)  Liquification

    C)  Hand picking 

    D)  Decantation

    Correct Answer: B

    Solution :

    Liquification involves condensation of gases. The gas which condenses first gets separated. In all the other options, atleast one of the constituents is a solid.


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