Alcohols Phenols and Ethers MCQ

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Alcohols Phenols and Ethers MCQ. We covered all the Alcohols Phenols and Ethers MCQ in this post for free so that you can practice well for the exam.

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MCQ on Alcohols Phenols and Ethers for NEET Students

At low temperatures, phenol reacts with Br₂ in CS₂ to form …….. as a minor product.

(A) p-bromophenol

(B) o-bromophenol

(C) 2,4-dibromophenol

(D) 2,4,6-tribromophenol

Option b – o-bromophenol

………. is formed when acetone is treated with sodium amalgam and water.

(A) Ethanol

(B) Propan-2-ol

(C) Butan-2-ol

(D) Propan-1-ol

Option b – Propan-2-ol

Which of the following has at least one OH group? (I) Salicylic acid (II) Anisole (III) Adipic acid (IV) Lactic acid (V) Vanillin (VI) Glyceraldehyde

(A) (II) and (V)

(B) (I), (IV), (V), and (VI)

(C) (I) and (IV)

(D) (I), (III), (V), and (VI)

Option b – (I), (IV), (V), and (VI)

The major product of acid-catalyzed dehydration of 1-methyl cyclohexanol is ………

(A) Cyclohexene

(B) 3-Methylcyclohexene

(C) 2-Methylcyclohexene

(D) 1-Methylcyclohexene

Option d – 1-Methylcyclohexene

What is the possible number of structural isomers of aliphatic monohydroxy alcohol consisting of a total of five carbon atoms including only one methyl group as a branch?

(A) 2

(B) 3

(C) 4

(D) 5

Option c – 4

In the mechanism of hydration of an alkene acid, the I presence of sulphuric electrophile involved is …….

(A) H₂O

(B) H3O

(C) SO3

(D) OH

Option b – H3O

Phenol in presence of sodium hydroxide reacts with chloroform to form salicylaldehyde. The reaction is known as ………

(A) Kolbe’s reaction

(B) Reimer-Tiemann reaction

(C) Stephen’s reaction

(D) Williamson synthesis

Option b – Reimer-Tiemann reaction

Identify the ether among the following that yields ethanol as one of the products of reaction with cold hydroiodic acid.

(A) Methoxyethane

(B) 1-Ethoxy-2-methylpropane

(C) 2-Ethoxy-2-methylpropane

(D) Ethoxybenzene

Option c – 2-Ethoxy-2-methylpropane

The intermolecular dehydration of ethanol at 413 K is an example of ……… reaction.

(A) addition

(B) elimination

(C) rearrangement

(D) substitution

Option d – substitution

Identify the CORRECT statement regarding 1-phenyl ethanol.

(A) It is vinylic alcohol.

(B) It is a phenol.

(C) It is benzylic alcohol.

(D) It is allylic alcohol.

Option c – It is benzylic alcohol.

The most suitable reagent for the following conversion is ……… Acetic acid → Ethanol

(A) H₂/Raney nickel

(B) NaBH4

(C) LiAlH4/ether, H₂O

(D) P₂05/heat

Option c – LiAlH4/ether, H₂O

Which of the following is the least acidic? (I) p-Bromophenol (II) p-Methoxyphenol (III) p-Cresol (IV) p-Hydroxybenzoic acid

(A) (I)

(B) (II)

(C) (III)

(D) (IV)

Option b – (II)

How many sigma bonds are present in m-cresol?

(A) 8

(B) 12

(C) 15

(D) 16

Option d – 16

Sorbitol has ………

(A) four primaries and two secondary -OH groups

(B) four secondary and two primary -OH groups

(C) six primary -OH groups

(D) six secondary -OH groups

Option b – four secondary and two primary -OH groups

Which of the following is CORRECT regarding Kolbe’s reaction?

(A) The first step of the reaction involves the conversion of phenol to phenoxide ion.

(B) In the second step of the reaction, the phenoxide ion undergoes aromatic nucleophilic substitution with CO₂.

(C) At lower temperatures, 4-hydroxybenzoic acid is the major product.

(D) At higher temperatures, 2-hydroxybenzoic acid is the major product.

Option a – The first step of the reaction involves the conversion of phenol to phenoxide ion.

Propanal on hydrogenation in presence of Pt forms (X). In the presence of HBF4, (X) reacts with diazomethane to give …….

(A) methoxymethane

(B) methoxy ethane

(C) 1-methoxypropane

(D) 2-methoxypropane

Option c – 1-methoxypropane

An organic compound on treatment with conc sulphuric acid gives an intermediate compound which on further hydrolysis gives, isopropanol. The organic compound is …….. and the process is called ……….

(A) CH3CH₂CH₂OH; elimination

(B) CH3CH₂CH3; dehydration

(C) CH3CH=CH2; substitution

(D) CH₂=CHCH3; hydration

Option d – CH₂=CHCH3; hydration

Chlorobenzene is heated with steam at 698 K using Ca3(PO4)2 as a catalyst to form compound (A When compound (A) is heated with zinc dust compound (B) is obtained. Identify the CORRECT statement about compound (B).

(A) Compound (B) is a diketone.

(B) Compound (B) is a haloarene.

(C) Compound (B) is an aldehyde.

(D) Compound (B) is an aromatic hydrocarbon

Option d – Compound (B) is an aromatic hydrocarbon

Catalytic hydrogenation of butanal yield ………

(A) n-butane

(B) pentan-2-ol

(C) butan-1-ol

(D) butanoic acid

Option c – butan-1-ol

We covered all the alcohols phenols and ethers mcq above in this post for free so that you can practice well for the exam.

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