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  5. Thermal Properties of Matter / द्रव्य के तापीय गुण

Railways General Science & Technology Thermal Properties of Matter / द्रव्य के तापीय गुण Sample Paper Properties of Matter Sample Test Paper-3

  • question_answer
    To keep constant time, watches are fitted with balance wheel made of

    A)  Invar

    B)  Stainless steel

    C)  Tungsten

    D)  Platinum

    Correct Answer: A

    Solution :

    [a] Because dimension of invar does not vary with temperature.


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