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NEET UG CHEMISTRY MCQ: THERMODYNAMICS

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In which reaction ∆S is positive?
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Correct option: D
N2(g)+3H2(g)→2NH3(g){\mathrm{N}_2}\left( \mathrm{g} \right) + 3{\mathrm{H}_2}\left( \mathrm{g} \right) \to 2\mathrm{N}{\mathrm{H}_3}\left( \mathrm{g} \right)
Option C (H2O(l)→H2O(g){\mathrm{H}_2}\mathrm{O}\left( l \right) \to {\mathrm{H}_2}\mathrm{O}\left( \mathrm{g} \right)) is correct because the conversion of liquid water to gaseous water (steam) increases disorder, resulting in a positive change in entropy.

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