Consider the following reaction sequence. \[ \mathrm{CH}_{3} \mathrm{C} \equiv \mathrm{CH} \unde...

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Consider the following reaction sequence.
\[
\mathrm{CH}_{3} \mathrm{C} \equiv \mathrm{CH} \underset{2 \text { mole }}{\stackrel{\text { HCl }}{\longrightarrow}} \mathrm{A} \underset{\text { heat }}{\stackrel{\text { aq. } \mathrm{KOH}}{\longrightarrow}} \mathrm{B} \text {. }
\]
The products (A) and \( (\mathrm{B}) \) respectively, are:
(a) \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CHCl}_{2} \) and \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CHO} \)
(b) \( \mathrm{CH}_{3} \mathrm{CCl}_{2} \mathrm{CH}_{3} \) and \( \mathrm{CH}_{3} \mathrm{COCH}_{3} \)
(c) \( \mathrm{CH}_{3} \mathrm{CCl}_{2} \mathrm{CH}_{3} \) and \( \mathrm{CH}_{3} \mathrm{C} \equiv \mathrm{CH} \)
(d) \( \mathrm{CH}_{3} \mathrm{CHClCH}_{2} \mathrm{Cl} \) and \( \mathrm{CH}_{3} \mathrm{CH}(\mathrm{OH}) \mathrm{CH}_{2} \mathrm{OH} \)
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