Identify appropriate reagents for the above reaction:

Identify appropriate reagents for the above reaction:

1. $\mathrm{a}=\mathrm{Br}_{2} / \mathrm{CCl}_{4}, \quad \mathrm{~b}=\mathrm{aq} . \mathrm{KOH}$
2. $\mathrm{a}=\mathrm{Br}_{2} / \mathrm{H}^{+}, \quad \mathrm{b}=\mathrm{aq} . \mathrm{KOH}$
3. $\mathrm{a}=\mathrm{Br}_{2} / \mathrm{H}^{+}, \quad \mathrm{b}=\mathrm{alc} . \mathrm{KOH}$
4. $\mathrm{a}=\mathrm{Br}_{2} / \mathrm{HO}^{-}, \quad \mathrm{b}=\mathrm{aq} . \mathrm{KOH}$

Asked in: JEE-TOPICTESTS-CHEMISTRY

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