Boiling points

  • 0_1555932378450_IMG_20190422_165603.jpg
    Please explain how opt 4 is Ans? Shouldn't answer be option 2?

  • @anag
    these are the facts regarding it-

    I. The potential energy of the system increases. no, its decreasing
    II. The distance between molecules increases. yes, gases have greater vol
    III. The average kinetic energy of the molecules increases. yes, because the molecules are liberated from their bonds...

    i think there will be correction in answer or in question as it is one of the previous year question in which it is asked that kinetic energy increases.

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