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deal gas expands form volume $V_{1} to V_{2}$ this may be achieved by either of the three processes: isobaric, isothermal and adiabatic. Let $Δ U$ be change in internal energy of the gas, Q be the quantity of heat added to the system and W be the work done by the system on the gas. Identify which of the following statements are true.

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$Δ U$ is least under adiabatic process

$Δ U$ is greatest under adiabatic process

W is greatest under the isobaric process

$Δ U$ for isothermal process lies in-between the values of $△ U of adiabatic and isobaric procecess .$

answer is A, C, D.

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Detailed Solution

Temperature is maximum for isobaric process. Area under the isobaric curve is maximum so work done in isobaric process is maximum .

$△ U for isobaric process is positive and maximum .$ $△ U f o r a d i a b a t i c p r o c e s s i s n e g a t i v e a n d △ U f o r i s o t h e r m a l p r o c e s s i s z e r o .$

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