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
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