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JEE Advanced > Aldehydes, Ketones and Carboxylic Acids

Explore popular questions from Aldehydes, Ketones and Carboxylic Acids for JEE Advanced. This collection covers Aldehydes, Ketones and Carboxylic Acids previous year JEE Advanced questions hand picked by experienced teachers.

Q 1.

Correct4

Incorrect-1

The reagent with which both acetaldehyde and acetone react easily is

A

Fehling's reagent

Grignard reagent

C

Schiff's reagent

D

Tollen's reagent

Explanation

Q 2.

Correct4

Incorrect-1

When propionic acid is treated with aqueous sodium bicarbonate, {tex} \mathrm { CO } _ { 2 } {/tex} is liberated. The {tex} '\mathrm { C }' {/tex} of {tex} \mathrm { CO } _ { 2 } {/tex} comes from

A

methyl group

B

carboxylic acid group

C

methylene group

bicarbonate

Explanation

Q 3.

Correct4

Incorrect-1

A mixture of benzaldehyde and formaldehyde on heating with aqueous {tex}\mathrm {NaOH}{/tex} solution gives

benzyl alcohol and sodium formate

B

sodium benzoate and methyl alcohol

C

sodium benzoate and sodium formate

D

benzyl alcohol and methyl alcohol

Explanation

Q 4.

Correct4

Incorrect-1

Ethyl ester {tex} \xrightarrow[\mathrm {excess}] { \mathrm { CH } _ { 3 } \mathrm { MgBr } } { } \mathrm { P } {/tex}. The product {tex}\mathrm { P } {/tex} will be

B

C

D

Explanation

Q 5.

Correct4

Incorrect-1

How will you convert butan-2-one to propanoic acid?

A

Tollen's reagent

B

Fehling's solution

{tex} \mathrm { NaOH } / \mathrm { I } _ { 2 } / \mathrm { H } ^ { + } {/tex}

D

{tex} \mathrm { NaOH } / \mathrm { NaI } / \mathrm { H } ^ { + } {/tex}

Explanation

Q 6.

Correct4

Incorrect-1


The compound {tex}\mathrm{ ( X )} {/tex} is

A

{tex} \mathrm { CH } _ { 3 } \mathrm { COOH } {/tex}

B

{tex} \mathrm { Br } \mathrm { CH } _ { 2 }- \mathrm { COOH } {/tex}

{tex} \left( \mathrm { CH } _ { 3 } \mathrm { CO } \right) _ { 2 } \mathrm { O } {/tex}

D

{tex}\mathrm{CHO-COOH}{/tex}

Explanation

Q 7.

Correct4

Incorrect-1

In the following reaction sequence, the correct structures of {tex} \mathrm { E } ,\ \mathrm { F } {/tex} and {tex} \mathrm {G} {/tex} are

A

B

D

Explanation

Q 8.

Correct4

Incorrect-1

In the reaction,the structure of the product {tex}\mathrm T{/tex} is:

A

B

D

Explanation

Q 9.

Correct4

Incorrect-1

The carboxyl functional group {tex} ( - \mathrm { COOH } ) {/tex} is present in

A

picric acid

B

barbituric acid

C

ascorbic acid

aspirin

Explanation


Q 10.

Correct4

Incorrect-1

The major product of the following reaction sequence is

B

C

D

Explanation

Q 11.

Correct3

Incorrect-1

Answer the following by appropriately matching the lists based on the information given in the paragraph. List-I includes starting materials and reagents of selected chemical reactions. List-II gives structures of compounds that may be formed as intermediate products and/or final products from the reactions of List-I.


Which of the following options has correct combination considering List-I and List-II?

A

{tex} ( \mathrm { I } ) , ( \mathrm { S } ) , ( \mathrm { Q } ) , ( \mathrm { R } ) {/tex}

{tex} ( \mathrm { II } ) , ( \mathrm { P } ) , ( \mathrm { S } ) , ( \mathrm { U } ) {/tex}

C

{tex} ( \mathrm { I } ) , ( \mathrm { Q } ) , ( \mathrm { T } ) , ( \mathrm { U } ) {/tex}

D

{tex} ( \mathrm { II } ) , ( \mathrm { P } ) , ( \mathrm { S } ) , ( \mathrm { T } ) {/tex}

Explanation


Q 12.

Correct3

Incorrect-1

List-I includes starting materials and reagents of selected chemical reactions. List-II gives structures of compounds that may, be formed as intermediate products and/or final products from the reactions of List-I



Which of the following options has correct combination considering List-I and List-II?

{tex} ( \mathrm { IV } ) , ( \mathrm { Q } ) , ( \mathrm { R } ) {/tex}

B

{tex} ( \mathrm { IV } ) , ( \mathrm { Q } ) , ( \mathrm { U } ) {/tex}

C

{tex} ( \mathrm { III } ) , ( \mathrm { S } ) , ( \mathrm { R } ) {/tex}

D

{tex} ( \mathrm { III } ) , ( \mathrm { T } ) , ( \mathrm { U } ) {/tex}

Explanation

Q 13.

Correct4

Incorrect-1

The reagent with which both acetaldehyde and acetone react easily is

A

Fehling's reagent

Grignard reagent

C

Schiff's reagent

D

Tollens reagent

Explanation

Q 14.

Correct4

Incorrect-1

The compound that gives a positive iodoform test is

A

1-pentanol

2-pentanone

C

3-pentanone

D

pentanal

Explanation

Q 15.

Correct4

Incorrect-1

When acetaldehyde is heated with Fehling's solution it gives a precipitate of

A

{tex} \mathrm { Cu } {/tex}

B

{tex} \mathrm { CuO } {/tex}

{tex} \mathrm { Cu } _ { 2 } \mathrm { O } {/tex}

D

{tex} \mathrm { Cu } + \mathrm { Cu } _ { 2 } \mathrm { O } + \mathrm { CuO } {/tex}

Explanation