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Thermodynamics

# A process is spontaneous at all temperatures, if

$\begin {array} {1 1} (A)\; \Delta H < 0; \Delta S < 0 & \quad (B)\; \Delta H < 0; \Delta S > 0 \\ (C)\; \Delta H = 0; \Delta S < 0 & \quad (D)\; \Delta H > 0; \Delta S < 0 \end {array}$

Since for a reaction to be spontaneous, $\Delta G < 0$, which is possible for all temperatures only if $\Delta H < 0$ and $\Delta S > 0.$
Ans : (B)