Railways Sample Paper RRB (Group D) Sample Test Paper-10

  • question_answer
    When water is heated from \[0{}^\circ C\] to\[10{}^\circ C\]. Its volume:

    A)  Increases

    B)  Decreases

    C)  Does not change

    D)  First decreases and then increases

    Correct Answer: D

    Solution :

    [d] Initially at start of heating from 0°C to 4°C there will be a contraction as a result of which volume decreases. On further Heating beyond 4°C to 10°C the molecules gain kinetic energy and start moving more randomly. Thus, intermolecular distance increases as a result of which its volume increases.


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