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JEE Main & Advanced Physics Thermometry, Calorimetry & Thermal Expansion Question Bank Calorimetry

  • question_answer
    2gm of steam condenses when passed through 40gm of water initially at 25°C. The condensation of steam raises the temperature of water to 54.3°C. What is the latent heat of steam             [J & K CET 2005]

    A)            540 cal/g                                

    B)            536 cal/g

    C)            270 cal/g                                

    D)            480 cal/g

    Correct Answer: A

    Solution :

                       Let L be the latent heat and using principle of calorimetry. 2L + 2 (100 ? 54.3) = 40 ´ (54.3 ? 25.3) Þ L = 540.3 cal/gm.


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