MCQ
Identify correct combination


- A$(A)=\begin{matrix}
C{{H}_{2}}-OH \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{2}}-SH \\
\end{matrix}$ - B$(B) = NaBH_4$
- C$(C) = KMnO_4$
- ✓$(D) = H_3O^{\oplus}$


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Isomer $(P) \Rightarrow$ Can be prepared by Gabriel phthalimide synthesis
Isomer $(Q) \Rightarrow$ Reacts with Hinsberg's reagent to give solid insoluble in $NaOH$
Isomer (R) $\Rightarrow$ Reacts with $HONO$ followed by $\beta$-naphthol in $NaOH$ to give red dye.
Isomers $( P ),( Q )$ and $( R )$ respectively are