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NEET Sample Paper NEET Sample Test Paper-53

  • question_answer
    10 moles of an ideal gas confined to a volume of 10 L is released into atmosphere at 300 K where the pressure is 1 bar. The work done by the gas is \[\left( R=0.083\text{ }L\text{ }bar\text{ }{{K}^{-}}^{1}\,mo{{l}^{-1}} \right)\]

    A) -249 L bar        

    B)   -259 L bar

    C) - 239 L bar                   

    D) -220 L bar

    Correct Answer: C

    Solution :

    \[Initial\text{ }volume\text{ }{{V}_{1}}\,\,=\,\,10\,\,L\] \[{{V}_{2}}(final)\,\,=\,\,\frac{nRT}{P}\,\,=\,\,\frac{10\times 0.083\times 300}{1}\,\,=\,\,249\,L\] \[w=-P\Delta Y=-1\left( 249-10 \right)=-239\text{ }L\text{ }bar\]


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