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A Container having 1 mole of a gas at a temperature \( 27^{\circ} \mathrm{C} \) has a movable piston which maintains at constant pressure in container of \( 1 \mathrm{~atm} \). The gas is compressed until temperature becomes \( 127^{\circ} \mathrm{C} \). The work done is \( \left(C_{p}\right. \) for gas is
\( \mathrm{P} \) \( 7.03 \mathrm{cal} / \mathrm{mol} \mathrm{K}) \)
[DCE 2005]
(a) \( 703 \mathrm{~J} \)
(b) \( 831 J \)
(c) \( 121 \mathrm{~J} \)
(d) \( 2035 \mathrm{~J} \)
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