Alcohols Phenols and Ethers Practice Questions
NEET · Chemistry · 1478 free MCQs with instant results and detailed explanations.
1478
Total
301
Easy
659
Medium
518
Hard
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Topics in Alcohols Phenols and Ethers
Properties
358
Reactions
374
Distinction Tests
369
Preparation
377
Sample Questions from Alcohols Phenols and Ethers
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which of the following methods is commonly used for the preparation of alcohols from alkenes?
A.
Hydration
B.
Dehydration
C.
Oxidation
D.
Hydrogenation
Show Answer & Explanation
Correct Answer: A
Hydration of alkenes involves adding water across the double bond, leading to the formation of alcohols.
Q2
Easy
Which reagent is typically used in the preparation of phenols from haloarenes?
A.
NaOH
B.
H2SO4
C.
PCl5
D.
Mg
Show Answer & Explanation
Correct Answer: A
Sodium hydroxide (NaOH) is used to hydrolyze haloarenes, yielding phenols through nucleophilic substitution.
Q3
Easy
What is the product of the reaction between an alkene and B2H6 followed by oxidation with H2O2?
A.
Alcohol
B.
Ether
C.
Ketone
D.
Aldehyde
Show Answer & Explanation
Correct Answer: A
The hydroboration-oxidation reaction results in the formation of alcohols from alkenes.
Q4
Medium
Which of the following reactions is primarily used for the preparation of alcohols from alkenes?
A.
Hydroboration-oxidation
B.
Dehydration
C.
Halogenation
D.
Hydrogenation
Show Answer & Explanation
Correct Answer: A
The hydroboration-oxidation reaction converts alkenes to alcohols efficiently through a two-step process where alkenes react with borane and then are oxidized.
Q5
Medium
What is the primary reagent used in the preparation of phenols from benzene sulfonic acid?
A.
Caustic soda
B.
Sodium bicarbonate
C.
Sodium hydroxide
D.
Sodium sulfide
Show Answer & Explanation
Correct Answer: C
Sodium hydroxide is used to convert benzene sulfonic acid to phenol through hydrolysis, making it the correct reagent for this reaction.
Q6
Medium
Which of the following processes can be used to prepare ethers from alcohols?
A.
Dehydration
B.
Nucleophilic substitution
C.
Oxidation
D.
Reduction
Show Answer & Explanation
Correct Answer: B
Ethers can be prepared via nucleophilic substitution of alcohols, where an alcohol reacts with a suitable alkyl halide to form an ether.
Q7
Medium
Which method is commonly employed for the industrial preparation of ethanol?
A.
Fermentation
B.
Hydrolysis
C.
Synthesis gas reaction
D.
Dehydration of methanol
Show Answer & Explanation
Correct Answer: A
Fermentation is the primary method used industrially to produce ethanol from sugars by the action of yeast, making it the most efficient route for ethanol production.
Q8
Hard
Which of the following methods can be used to prepare an ether from an alcohol?
A.
Dehydration of alcohols in the presence of an acid
B.
Hydrolysis of alkyl halides
C.
Reduction of aldehydes
D.
Oxidation of ketones
Show Answer & Explanation
Correct Answer: A
Dehydration of alcohols in the presence of an acid leads to the formation of ethers via an intermolecular reaction. This process involves the elimination of water and is a commonly used method for synthesizing ethers.
Q9
Hard
Which reagent is NOT typically used in the preparation of phenols from aryl halides?
A.
Sodium hydroxide
B.
Aluminium chloride
C.
Copper(I) oxide
D.
Sodium phenoxide
Show Answer & Explanation
Correct Answer: B
Aluminium chloride is a Lewis acid and is generally not used for the preparation of phenols from aryl halides. The other options are effective reagents for synthesizing phenols through various mechanisms.
Q10
Hard
Which of the following reactions is used to convert an alcohol into an ether through a Williamson synthesis?
A.
Alcohol reacting with an alkyl halide
B.
Alcohol reacting with phenol
C.
Alcohol reacting with an acid chloride
D.
Alcohol reacting with a carbonyl compound
Show Answer & Explanation
Correct Answer: A
The Williamson synthesis involves the reaction of an alcohol with an alkyl halide in the presence of a strong base to form an ether. This reaction is fundamental in organic synthesis of ethers.
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Alcohols Phenols and Ethers — NEET Chemistry Practice Questions Online
This page contains 1478 practice MCQs for the chapter Alcohols Phenols and Ethers in NEET Chemistry. The questions are organized by difficulty — 301 easy, 659 medium, 518 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.