MCQ
Following are the four molecules "P", "Q", "R" and "S". Which one among the four molecules will react with $\mathrm{H}-\mathrm{Br}(\mathrm{aq})$ at the fastest rate ?

- AS
- ✓Q
- CR
- DP


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$CH_3CH(Cl)CH_2 - CH_2OH \xrightarrow{Aq.KOH}$ is