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Question

C6H5CH=CHCHO C6H5CH2CH2CH2OH in the presence of X,what will be X:

A
Li(AlH4)
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B
Na(BH)4
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C
Aluminium isopropoxide
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D
All of these
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Solution

The correct option is A Li(AlH4)
NaBH4 reduces only carbonyl group and has no effect on other reducing groups. LiAlH4 also reduces only carbonyl group but if the compounds are α,β unsaturated carbonyl compounds then the double bond also undergoes reduction. Aluminium isopropoxide also reduces only carbonyl group and has no effect on other reducing groups.

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