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NEET Sample Paper NEET Sample Test Paper-86

  • question_answer
    Steam is passed into 22 gm of water at \[20{}^\circ C.\] The mass of water that will be present when the water acquires a temperature of \[90{}^\circ C\] (Latent heat of steam is 540 cal/g) is

    A) 24.83 gm          

    B)        24 gm

    C) 36.6 gm

    D)        30 gm

    Correct Answer: A

    Solution :

    [a] Let m be the mass of steam condensed. Then  \[m\times 540+m\times {10}/{2=22\times 70}\;\] \[\therefore \] \[m=2.83\,gm\] Now, total mass \[=22+2.83=24.83\,\,gm\]


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