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NEET Physics Thermometry, Calorimetry & Thermal Expansion Question Bank Mock Test - Thermal Properties of Matter

  • question_answer
    A student takes 50 g wax (specific heat\[=0.6\text{ }kcal/kg{}^\circ C\]) and heats it till it boils. The graph between temperature and time is as follows. Heat supplied to the wax per minute ? and boiling point are, respectively

    A) 500 cal, \[50{}^\circ C\]

    B) 1000 cal,\[100{}^\circ C\]

    C) 1500 cal,\[200{}^\circ C\]

    D) 1000 cal,\[200{}^\circ C\]

    Correct Answer: C

    Solution :

    [c] Since specific heat \[=0.6\text{ }kcal/g\text{ }\times {}^\circ C\]   \[=0.6cal/g\times {}^\circ C\] From graph it is clear that in a minute, the temperature is raised from \[0{}^\circ C\]to\[50{}^\circ C\]. \[\Rightarrow \]Heat required for a minute \[50\times 0.6\times 50\]= 1500 cal. Also from graph. Boiling point of wax is\[200{}^\circ C\].


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