MCQ
An irreversible process occuring isothermally in an isolated system leads to
- AZero entropy
- ✓An increase in the total entropy of the system
- CA decrease in the total entropy of the system
- DNone of these
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$\mathrm{C}\mathrm{H}_{3} -\mathrm{C} \equiv \mathrm{CH} \xrightarrow[873\;K]{\text { red hot iron tube}} \mathrm{A}$
the number of sigma$(\sigma)$ bonds present in the product $A$ is
