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‘A’ and ‘B’ in the above reactions are:

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Important Questions on Aldehydes and Ketones

EASY

Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

Give one chemical test each to distinguish between acetaldehyde and benzaldehyde.

MEDIUM

Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

The major products formed in the following reaction sequence $A$ and $B$ are:

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EASY

Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

Identify the compounds A and B in the given reactions:

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MEDIUM

Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

The reaction of ethyl methyl ketone with

C l_{2}

excess

O H^{-}

gives the following major product

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Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

After completion of the reactions (I and II), the organic compound(s) in the reaction mixtures is(are):

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EASY

Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

How will you distinguish between propanal and propanone?

MEDIUM

Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

The structure of the starting compound $P$ used in the reaction given below is:

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EASY

Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

Write the chemical equations for the following reaction: Haloform reaction

MEDIUM

Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

The compound that does not undergo haloform reaction is

MEDIUM

Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

Haloform reaction with

I_{2}

and

KOH

will be responded by

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Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

An organic compound

C_{2} H_{4} O

gives red precipitate when warmed with Fehling’s solution. Give the IUPAC name of the compound and write the chemical equation for the reaction.

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Chemistry>Organic Chemistry>Aldehydes and Ketones>Chemical Reactions of Aldehydes and Ketones

Columns 1, 2 and 3 contain starting materials, reaction conditions and type of reactions respectively.

Column 1	Column 2	Column 3
(I) Toulene	(i) $N a O H / B r_{2}$	(P) Condensation
(II) Acetophenone	(ii) $B r_{2} / h v$	(Q) Carboxylation
(III) Benzaldehyde	(iii) ${(C H_{3} C O)}_{2} O / C H_{3} C O O K$	(R) Substitution
(IV) Phenol	(iv) $N a O H / C O_{2}$	(S) Haloform

For the synthesis of benzoic acid the only correct combination is