50+ JEE Mains MCQ Questions Alcohols, Phenols and Ethers with Solutions

Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the Alcohols, Phenols and Ethers. In this article, we will provide 50+ MCQ questions on the Alcohols, Phenols and Ethers along with detailed solutions to help you prepare for the JEE Mains exam.

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These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Alcohols, Phenols and Ethers JEE Mains MCQ Questions with Answers.

Alcohols, Phenols and Ethers JEE Mains MCQ

Which of the following compounds is an example of a primary alcohol?
a) Ethanol (CH3CH2OH)
b) 2-Propanol (CH3CHOHCH3)
c) Benzyl alcohol (C6H5CH2OH)
d) Isobutanol (CH3CH(CH3)CH2OH)

Answer: a) Ethanol (CH3CH2OH) Explanation: A primary alcohol is an alcohol in which the hydroxyl (-OH) group is attached to a carbon atom bonded to only one other carbon atom.

Which of the following reactions is used for the preparation of phenols?
a) Kolbe’s reaction
b) Williamson ether synthesis
c) Reimer-Tiemann reaction
d) Gabriel synthesis

Answer: c) Reimer-Tiemann reaction Explanation: The Reimer-Tiemann reaction involves the reaction of phenol with chloroform (CHCl3) and a strong base, resulting in the formation of hydroxybenzaldehyde.

The compound C6H5OH is an example of a:
a) Alcohol
b) Phenol
c) Ether
d) Aldehyde

Answer: b) Phenol Explanation: C6H5OH is a phenol because it is an aromatic compound (benzene ring) in which one of the hydrogen atoms is replaced by a hydroxyl group (-OH).

The compound CH3OCH3 is an example of a:
a) Alcohol
b) Phenol
c) Ether
d) Aldehyde

Answer: c) Ether Explanation: CH3OCH3 is an ether because it contains an oxygen atom bonded to two alkyl groups.

Which of the following reactions is an example of nucleophilic substitution reaction in alcohols?
a) Dehydration
b) Oxidation
c) Esterification
d) Halogenation

Answer: c) Esterification Explanation: Esterification involves the reaction of an alcohol with a carboxylic acid in the presence of an acid catalyst to form an ester and water.

The major product obtained by the reaction of phenol with bromine water (Br2/H2O) is:
a) Bromobenzene
b) Benzoic acid
c) Phenol-2,4-dibromide
d) 1,4-Benzoquinone

Answer: c) Phenol-2,4-dibromide Explanation: Phenol reacts with bromine water to form 2,4,6-tribromophenol as the major product.

The compound CH3CH2CH2OH is an example of a:
a) Primary alcohol
b) Secondary alcohol
c) Tertiary alcohol
d) Quaternary alcohol

Answer: a) Primary alcohol Explanation: CH3CH2CH2OH is a primary alcohol because the hydroxyl (-OH) group is attached to a carbon atom bonded to only one other carbon atom.

Which of the following reactions is used for the preparation of ethers?
a) Williamson ether synthesis
b) Oxidation of alcohols
c) Dehydration of alcohols
d) Aldol condensation

Answer: a) Williamson ether synthesis Explanation: Williamson ether synthesis involves the reaction of an alkyl halide with a sodium alkoxide to form an ether.

The compound C6H5CH2CH2OH is an example of a:
a) Alcohol
b) Phenol
c) Ether
d) Aldehyde

Answer: a) Alcohol Explanation: C6H5CH2CH2OH is an alcohol because it contains a hydroxyl (-OH) group attached to a carbon atom bonded to two other carbon atoms.

Which of the following reactions is used for the oxidation of primary alcohols to aldehydes?
a) Tollens’ test
b) Jones oxidation
c) Baeyer-Villiger oxidation
d) Clemmensen reduction

Answer: b) Jones oxidation Explanation: Jones oxidation is a common method for converting primary alcohols to aldehydes or carboxylic acids, depending on the reaction conditions.


The compound C6H5OH is commonly known as:
a) Methanol
b) Ethanol
c) Phenol
d) Butanol

Answer: c) Phenol Explanation: C6H5OH is phenol, an aromatic compound with a hydroxyl group attached to a benzene ring.

The reaction of an alcohol with conc. H2SO4 and heat leads to the formation of:
a) Alkene
b) Aldehyde
c) Ether
d) Ketone

Answer: a) Alkene Explanation: The dehydration of alcohols in the presence of concentrated sulfuric acid and heat leads to the formation of alkenes.

Which of the following compounds is an example of a secondary alcohol?
a) Methanol
b) Ethanol
c) Isopropanol
d) Benzyl alcohol

Answer: c) Isopropanol Explanation: Isopropanol (CH3CH(OH)CH3) is a secondary alcohol as the hydroxyl group is attached to a carbon atom bonded to two other carbon atoms.

The reaction of phenol with sodium hydroxide followed by acidification results in the formation of:
a) An ester
b) A phenolate ion
c) A ketone
d) A carboxylic acid

Answer: b) A phenolate ion Explanation: The reaction of phenol with sodium hydroxide followed by acidification forms a phenolate ion.

The compound CH3OCH3 is commonly known as:
a) Ethanol
b) Methanol
c) Dimethyl ether
d) Diethyl ether

Answer: c) Dimethyl ether Explanation: CH3OCH3 is dimethyl ether, which is an ether compound with two methyl groups bonded to an oxygen atom.

The oxidation of a primary alcohol leads to the formation of:
a) A ketone
b) An aldehyde
c) An ester
d) A carboxylic acid

Answer: b) An aldehyde Explanation: Oxidation of a primary alcohol results in the formation of an aldehyde.

Which of the following reactions is used for the synthesis of ethers?
a) Williamson ether synthesis
b) Fischer esterification
c) Grignard reaction
d) Clemmensen reduction

Answer: a) Williamson ether synthesis Explanation: Williamson ether synthesis is a widely used method for the synthesis of ethers by the reaction of alkyl halides with sodium alkoxides.

The compound C6H5OH is soluble in water due to:
a) Hydrogen bonding
b) Dipole-dipole interactions
c) London dispersion forces
d) Covalent bonding

Answer: a) Hydrogen bonding Explanation: C6H5OH (phenol) is soluble in water due to the formation of hydrogen bonds between the hydroxyl group of phenol and water molecules.

The reaction of an alcohol with PBr3 results in the formation of:
a) An alkene
b) An alkyl halide
c) An ether
d) A carboxylic acid

Answer: b) An alkyl halide Explanation: The reaction of an alcohol with phosphorus tribromide (PBr3) results in the formation of an alkyl bromide (alkyl halide).

Which of the following compounds is an example of a tertiary alcohol?
a) Methanol
b) Ethanol
c) Isopropanol
d) Tert-butanol

Answer: d) Tert-butanol Explanation: Tert-butanol (CH3)3COH is a tertiary alcohol as the hydroxyl group is attached to a carbon atom bonded to three other carbon atoms.


Which of the following reactions is used for the preparation of alcohols from aldehydes or ketones?
a) Cannizzaro reaction
b) Grignard reaction
c) Clemmensen reduction
d) Reduction with LiAlH4

Answer: d) Reduction with LiAlH4 Explanation: Reduction with lithium aluminum hydride (LiAlH4) is commonly used for the preparation of alcohols from aldehydes or ketones.

The compound C6H5OH undergoes which type of reactions?
a) Nucleophilic substitution
b) Nucleophilic addition
c) Electrophilic substitution
d) Elimination

Answer: c) Electrophilic substitution Explanation: C6H5OH (phenol) undergoes electrophilic substitution reactions due to the presence of a benzene ring.

The compound CH3CH2CH2OH is an example of a:
a) Primary alcohol
b) Secondary alcohol
c) Tertiary alcohol
d) Quaternary alcohol

Answer: a) Primary alcohol Explanation: CH3CH2CH2OH is a primary alcohol because the hydroxyl (-OH) group is attached to a carbon atom bonded to only one other carbon atom.

Which of the following reactions is used for the synthesis of ethers from alcohols?
a) Dehydration
b) Oxidation
c) Esterification
d) Williamson ether synthesis

Answer: d) Williamson ether synthesis Explanation: Williamson ether synthesis is commonly used for the synthesis of ethers from alcohols.

The compound C6H5CH2OH is commonly known as:
a) Ethanol
b) Methanol
c) Benzyl alcohol
d) Phenol

Answer: c) Benzyl alcohol Explanation: C6H5CH2OH is benzyl alcohol, which has a benzene ring attached to a methylene group (-CH2-) containing the hydroxyl group (-OH).

The reaction of an alcohol with PCC (pyridinium chlorochromate) results in the formation of:
a) An aldehyde
b) A ketone
c) An ether
d) An ester

Answer: a) An aldehyde Explanation: PCC is a mild oxidizing agent that converts primary alcohols to aldehydes.

The compound CH3OCH3 is commonly known as:
a) Ethanol
b) Methanol
c) Dimethyl ether
d) Diethyl ether

Answer: c) Dimethyl ether Explanation: CH3OCH3 is dimethyl ether, which is an ether compound with two methyl groups bonded to an oxygen atom.

The reaction of an alcohol with HX (X = Cl, Br, I) results in the formation of:
a) An alkene
b) An alkyl halide
c) An ether
d) An aldehyde

Answer: b) An alkyl halide Explanation: The reaction of an alcohol with HX (hydrogen halide) results in the formation of an alkyl halide (alkyl halogen compound).

The compound C6H5OH is an example of a:
a) Primary alcohol
b) Secondary alcohol
c) Tertiary alcohol
d) Phenol

Answer: d) Phenol Explanation: C6H5OH is phenol, which is an aromatic compound containing a hydroxyl group (-OH) attached to a benzene ring.

The reaction of an alcohol with thionyl chloride (SOCl2) leads to the formation of:
a) An alkene
b) An alkyl chloride
c) An ether
d) An aldehyde

Answer: b) An alkyl chloride Explanation: The reaction of an alcohol with thionyl chloride (SOCl2) leads to the formation of an alkyl chloride (alkyl halide).

We hope there JEE MCQ of Class 12 Alcohols, Phenols and Ethers will help you to score an excellent rank in JEE Mains and Advanced. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.

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