Question 1: Thermodynamics & KTG

Question

Heat given to the processes is positive. Match Column I with Column II:
Column I
Column II
(A)
JK
(P)
$
\Delta W>0
$
(B)
KL
(Q)
$
\Delta \mathrm{Q}0
$
![](https://app-content.cdn.examgoal.net/fly/@width/image/jaoe38c1mgt4pqsw/6ef41d89-b012-4386-b891-32d8d9bd49a3/08f18f00-aa66-11f0-82b2-bbffada9b493/file-jaoe38c1mgt4pqsx.png?format=png)

Accepted Answer

$ \mathrm{Q}=\Delta \mathrm{U}+\mathrm{W}, \mathrm{~W}=\int \mathrm{P} d \mathrm{~V} $ Along JK : V is constant, P is decreasing and $\mathrm{P} \propto \mathrm{T}, \mathrm{T}$ should also decrease. As $\mathrm{PV}=n \mathrm{RT}$. $ \begin{aligned} herefore & & \mathrm{W} & =P \Delta V=0 \ & & \Delta \mathrm{U} & =\Delta \mathrm{Q}0, \Delta \mathrm{U}=n \mathrm{C}_{\mathrm{V}} \Delta \mathrm{~T}>0 ext { and } \ & \mathrm{Q}=m c \Delta T>0 . \end{aligned} $ $ herefore$ Volume increases, $\Delta \mathrm{W}>0$ $\Rightarrow$ Along LM : MV = constant, $\Delta \mathrm{V}=0$ [isochoric process] both P increases and T increases. $ herefore W=0, \Delta U>0 ext { and } Q>0 \quad[\Delta Q=\Delta U] $ $\Rightarrow$ Along $\mathrm{MJ}: \mathrm{V}$ is decreasing, $ herefore \Delta \mathrm{W}<0$ T is also decreasing, $\Delta \mathrm{V}<0$ and $\Delta \mathrm{Q}<0$ P increases.

Answer

$ [\mathrm{A} \rightarrow(\mathrm{Q}) ; \mathrm{B} \rightarrow(\mathrm{~S}) ; \mathrm{C} \rightarrow(\mathrm{Q}) ; \mathrm{D} \rightarrow( \mathrm{R})]$

Answer

$ [\mathrm{A} \rightarrow(\mathrm{Q}) ; \mathrm{B} \rightarrow(\mathrm{P}) ; \mathrm{C} \rightarrow(\mathrm{~S}) ; \mathrm{D} \rightarrow(\mathrm{Q})]$

Answer

$ [\mathrm{A} \rightarrow(\mathrm{Q}) ; \mathrm{B} \rightarrow(\mathrm{P}, \mathrm{~S}) ; \mathrm{C} \rightarrow(\mathrm{~S}) ; \mathrm{D} \rightarrow(\mathrm{Q}, \mathrm{R})] $

Answer

$ [\mathrm{A} \rightarrow(\mathrm{Q}) ; \mathrm{B} \rightarrow(\mathrm{S}) ; \mathrm{C} \rightarrow(\mathrm{S}) ; \mathrm{D} \rightarrow( \mathrm{R})]$

Thermodynamics & KTG

Heat given to the processes is positive. Match Column I with Column II: Column I Column II (A) JK (P) \Delta W>0 (B) KL (Q) \Delta \mathrm{Q}<0 (C) LM (R) \Delta \mathrm{W}<0 (D) MJ (S) \Delta Q>0

Choose the correct answer: