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JEE Main

Explore popular questions from Alcohols, Phenols and Ethers for JEE Main. This collection covers Alcohols, Phenols and Ethers previous year JEE Main questions hand picked by experienced teachers.

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Alcohols, Phenols and Ethers

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Q 1.
Major product (B) of this reaction is:

A

B

C

Explanation

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Q 2. The final product obtained in the reaction

B

C

D

Explanation

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Q 3. Which of the following compounds does not give alcohol on reaction with RMgX?

A

B

D

Explanation

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Q 4. Which one/ones of the following reactions will yield 2-propanol? Choose the right from (I), (II), (III) and (IV)

I and II

B

II and III

C

III and I

D

II and IV

Explanation

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Q 5.
Product (B) is:

A

C

D

Explanation

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Q 6. Dehydration of alcohol to alkene by heating with conc. {tex}\mathrm{H_2SO_4}{/tex} the initiation step is _______ followed with ______ mechanism.

A

Elimination of water, free radical

B

Formation of an ester, free radical

Protonation of alcohol, carbocation

D

Protonation of alcohol, carbanion

Explanation

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Q 7. Ethylene glycol on treatment with {tex} \mathrm { PI } _ { 3 } {/tex} mainly gives:

Ethylene

B

Ethylene iodide

C

Ethyl iodide

D

Ethane

Explanation

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Q 8.

Select the correct code for given reaction

A

I and III

B

II and IV

C

I and IV

II and III

Explanation

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Q 9.
Product of above reaction is:

A

C

D

Explanation

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Q 10. Consider the following sequence of reaction

Product D is:

A

{tex} \mathrm { PhCH } _ { 2 } \mathrm { OPh } {/tex}

{tex} \mathrm { PhCH } _ { 2 } \mathrm { OCH } _ { 2 } \mathrm { Ph } {/tex}

C

{tex} \mathrm { PhCH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { Ph } {/tex}

D

Explanation

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Q 11. When sodium benzenesulphonate is fused with solid sodium hydroxide and subsequently acidified with dilute sulphuric acid, the product formed is:

A

benzene

B

sodium phenoxide

C

thiophenol

phenol

Explanation

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Q 12. Consider the reaction:

A

B

C

Explanation

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Q 13.
A and B are:

B

C

D

Explanation

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Q 14.
The products (A) and (B) are:

A

B

D

Explanation

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Q 15. Which of the following can give purple colour with neutral {tex} \mathrm { FeCl } _ { 3 } {/tex}?

II and IV

B

I and III

C

II and III

D

III and IV

Explanation

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Q 16. Phenol cannot be converted into salicylic acid by heating with:

A

{tex} \mathrm { CO } _ { 2 } {/tex} (under pressure) and alkali

B

{tex} \mathrm { CCl } _ { 4 } {/tex} and alkali

{tex} \mathrm { CHCl } _ { 3 } {/tex} and alkali

D

{tex} \mathrm { HCN } / \mathrm { HCl } , {/tex} followed by oxidation

Explanation

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Q 17. In the Liebermann nitroso reaction, changes in the colour of phenol occur as:

A

Brown or red-green-red-deep blue

Red-deep blue-green

C

Red-brown-white

D

White-red-green

Explanation

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Q 18. Identify the nature of product of in the following reaction:

B

C

D

Explanation

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Q 19.
Identify the structure of 'P'

B

C

D

Explanation