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| $A$. સમદાબી (Isobaric) | $I$. $\Delta Q = \Delta W$ |
| $B$. સમકદ (Isochoric) | $II$. $\Delta Q = \Delta U$ |
| $C$. એડિબેટિક (Adiabatic) | $III$. $\Delta Q = 0$ |
| $D$. સમતાપી (Isothermal) | $IV$. $\Delta Q = \Delta U + P \Delta V$ |
| કોલમ-$I$ | કોલમ-$II$ |
| $(A)$ $PV$ વિરુદ્ધ $V$ (સમતાપી વિસ્તરણ) | $(P)$ $W$ > 0 |
| $(B)$ $P$ વિરુદ્ધ $T$ (સમકદ ગરમ થવું) | $(Q)$ $W$ < 0 |
| $(C)$ $P$ વિરુદ્ધ $V$ (સમદાબ વિસ્તરણ) | $(R)$ $\Delta Q$ > 0 |
| $(D)$ $V$ વિરુદ્ધ $T$ (સમદાબ સંકોચન) | $(S)$ $\Delta U$ > 0 |
| $(T)$ $\Delta U$ < 0 |
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