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Q.

The reagent which can be used to reduce $— CHO$ to $— {CH}_{2} OH$ without affecting the double bond in the unsaturated aldehydic molecule is

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a

${LiAlH}_{4}$

b

$9 - BBN$

c

$Zn / HCl$

d

${NaBH}_{4}$

answer is C.

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Detailed Solution

9-BBN (9-borabicyclo[3, 3, 1]nonane) can be used. the double bond in the unsaturated aldehydic molecule is $9 - BBN$ .

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