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In Clemmensen reduction, aldehyde and ketone is reduced to alkane in the presence of zinc-mercury amalgam and concentrated acid.

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Important Questions on Aldehydes, Ketones and Carboxylic acids

EASY
The reduction product of ethyl 3-oxobutanoate by NaBH4 in methanol is
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The major product 'X' formed in the following reaction is:

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HARD

Reagent(s) which can be used to bring about the following transformation is(are)


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EASY
An organic compound 'X' having molecular formula C5H10O yields phenyl hydrazone and gives negative response to the iodoform test and Tollen's test. It produces n-pentane on reduction. 'X' could be:
MEDIUM

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In the above reactions, product A and product B respectively are:

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4-Formyl benzoic acid on treatment with one equivalent of hydrazine by heating with alcoholic KOH gives the major product-
EASY

The appropriate reagent for the following transformation is

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Considering the above reaction, the major product among the following is:

EASY
Aldehydes and ketones can be reduced to hydrocarbon by using
EASY
Aldehydes and ketones those are not sensitive to acids when heated with zinc amalgam and concentrated hydrochloric acid give alkane. This reaction is known as
HARD
Match the following.
  Column-1
Reaction
  Column-2
product
A

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I Cyclohexanol
B Question Image II Benzyl alcohol
C

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III Toluene
    IV Benzaldehyde
    V Cyclohexane

The correct match is

EASY
Experimentally reducing a functional group cannot be done by which one of the following reagents ?
MEDIUM

The increasing order of the reactivity of the following with LiAlH4 is:

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