Identify $Z$ in the following reaction sequence:
$C H_{3} C H_{2} B r K C N - -- \to X d i l . H C l - --- \to Δ Z$

C H_{3} C O C l

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C H_{3} C O N H_{2}

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C H_{3} C O O H

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C H_{3} C H_{2} C O O H

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Solution

The correct option is D $C H_{3} C H_{2} C O O H$
When ethyl bromide reacts with KCN, it undergoes substitution reaction to form ethyl cyanide.
This ethyl cyanide when reacts with dil. HCl, it forms propionic acid as a product.

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