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  1. When hot-water is sprinkled on a hotter glass tumbler, it breaks because

  2. A.

     Glass suddenly expands

    B.

     Glass suddenly contracts

    C.

     Water evaporates

    D.

     Glass reacts chemically with water

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    Answer : Option B

    Explanation :

    If the poured liquid is relatively hotter or colder in comparison to the tumbler, it will break. When hot water is poured into a tumbler there is an uneven increase in the thermal expansion of the walls of the vessel.


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