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Preparation of Haloalkanes from Alcohol

Identify A, B...

Question

Identify (A), (B), and (C).

(A)

S n C l_{2} / H C L; F e S O_{4} / N H_{4} O H

, (B)

N a B H_{4}; L A H / A I C I_{3}

, (C)

C r O_{3} / A c_{2} O

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(A)

N a B H_{4}; L A H / A I C I_{3}

, (B)

S n C l_{2} / H C L; F e S O_{4} / N H_{4} O H

, (C)

C r O_{3} / A c_{2} O

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(A)

C r O_{3} / A c_{2} O

(B)

N a B H_{4}; L A H / A I C I_{3}

, (C)

S n C l_{2} / H C L; F e S O_{4} / N H_{4} O H

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None of the above

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Solution

The correct option is A (A) $S n C l_{2} / H C L; F e S O_{4} / N H_{4} O H$ , (B) $N a B H_{4}; L A H / A I C I_{3}$ , (C) $C r O_{3} / A c_{2} O$
$\begin{matrix} Here the Nitro group is converted into amino and nothing is disturbed so the possible reducing agent A is \end{matrix}$
${SnCl}_{2} / {HCl (or) FeSO}_{4} {/NH}_{4} OH$

$\begin{matrix} Here only aldehyde is converted into alcohol and nothing is disturbed. So the possible reducing agents are. {NaBH}_{4} {(or)LAH/AlCl}_{3} \end{matrix}$

$Here the methyl group is oxidised to aldehyde. So the$
$Possible oxpdrsing agent is C r O_{3} / A c_{2} O .$

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