Are these practice questions for Alcohols, Phenols and Ethers based on the CBSE pattern?

Yes. Every practice question is modeled on the CBSE Class 12 - Science Chemistry exam pattern — including MCQs, assertion-reason questions, and short-answer formats that frequently appear in CBSE papers.

Are the practice questions for Alcohols, Phenols and Ethers free?

Yes. Every chapter includes free practice questions for Class 12 - Science students to get you started.

What types of questions are included?

The practice set for Alcohols, Phenols and Ethers mainly includes MCQs and CBSE-style short-answer questions, with instant feedback on each answer. For full-length textbook practice, use the NCERT Solutions page.

Are the practice questions suitable for board exam preparation?

Yes. The questions test the same concepts and depth that CBSE asks in board exams. After finishing, also solve the NCERT and NCERT Exemplar exercises for Alcohols, Phenols and Ethers for full coverage.

How many practice questions are there for Alcohols, Phenols and Ethers?

The number scales with chapter length and concept density. Each chapter typically has 15-50 practice questions across MCQ and short-answer formats.

Alcohols, Phenols and Ethers Class 12 Chemistry Practice Questions with Answers

easy

Solve for the major product of the Reimer-Tiemann reaction when phenol is treated with chloroform (

\text{CHCl}_3

) in the presence of aqueous NaOH.

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easy

Apply IUPAC nomenclature rules to name the compound with the structure

\text{CH}_3\text{CH(OH)CH}_2\text{CH}_2\text{Cl}

.

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easy

Name the major product formed when phenol is heated with zinc dust.

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easy

List two general methods for the preparation of alcohols from carbonyl compounds.

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easy

Define a symmetrical ether and provide one example.

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easy

Recall the common name for the compound 2,4,6-trinitrophenol.

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easy

Apply your knowledge of electrophilic substitution to predict the major product of the bromination of anisole in ethanoic acid.

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easy

Identify the class of alcohol (primary, secondary, or tertiary) for the compound with the IUPAC name 2-methylpropan-2-ol.

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medium

Examine the products formed when anisole (methoxybenzene) is heated with excess concentrated HI.

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medium

Analyze the reaction of ethanol with concentrated

\text{H}_2\text{SO}_4

at two different temperatures:

413 \text{ K}

and

443 \text{ K}

. Identify the major product in each case and explain the difference.

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medium

Evaluate the reaction outcomes when ethanol is treated with concentrated sulphuric acid (

H_2SO_4

) at two different temperatures:

413

K and

443

K. Justify why different major products are formed.

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medium

Compare the acidity of phenol, p-nitrophenol, and p-cresol. Arrange them in increasing order of acidity and justify your answer based on substituent effects.

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medium

Create a flowchart to design a series of chemical tests to distinguish between propan-1-ol, propan-2-ol, and 2-methylpropan-2-ol. Justify the expected observations for each test.

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medium

Justify why the phenoxide ion, rather than phenol itself, is used as the reactant in the Kolbe's reaction for the synthesis of salicylic acid.

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medium

Compare the boiling points of propan-1-ol, butan-1-ol, and butan-2-ol. Analyze the structural factors responsible for the differences.

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medium

Name the reagent commonly used to distinguish between primary, secondary, and tertiary alcohols in the laboratory.

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medium

Apply the concept of oxidation to predict the major products when (i) propan-1-ol is treated with pyridinium chlorochromate (PCC) and (ii) propan-2-ol is treated with chromic anhydride (

\text{CrO}_3

). Write the reactions.

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medium

Explain why the boiling point of ethanol (

C_2H_5OH

) is significantly higher than that of methoxymethane (

CH_3OCH_3

), although they have comparable molecular masses.

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medium

Compare the reactions of primary, secondary, and tertiary alcohols with Lucas reagent (conc.

\text{HCl}

and anhydrous

\text{ZnCl}_2

). Analyze how this test can be used to distinguish between the three classes of alcohols.

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medium

Write the IUPAC names for the following compounds: (i) Glycerol, (ii) Catechol, and (iii) Anisole.

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medium

Explain why phenols are more acidic than alcohols.

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medium

List the products formed when anisole undergoes Friedel-Crafts alkylation with methyl chloride (

CH_3Cl

) in the presence of anhydrous aluminum chloride (

AlCl_3

). Identify the major product.

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medium

Summarize the reaction known as the Reimer-Tiemann reaction by stating the reactants, conditions, and the major product formed. Write the overall chemical equation.

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medium

Demonstrate how you would convert propene to propan-1-ol using the hydroboration-oxidation reaction. Write the complete reaction sequence.

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medium

Describe the industrial preparation of phenol from cumene. Write all the chemical equations involved in the process.

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medium

Critique the proposed synthesis of t-butyl ethyl ether from the reaction of sodium ethoxide (

C_2H_5ONa

) with t-butyl chloride (

(CH_3)_3CCl

). Propose a more suitable synthetic route.

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medium

Demonstrate the industrial preparation of phenol from cumene. Analyze the economic importance of acetone being formed as a by-product in this process.

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medium

Solve for the synthesis of 2-methylpropan-2-ol starting from a suitable ketone and a Grignard reagent. Show the reaction steps.

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hard

Describe the classification of monohydric alcohols based on the hybridization of the carbon atom to which the hydroxyl group is attached. Provide one example for each classification.

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hard

Design a multi-step synthesis to prepare 1-phenylethanol starting from benzene. You may use any necessary inorganic reagents and organic reagents with up to two carbon atoms. Justify the choice of reagents for each step.

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hard

Explain the mechanism of acid-catalysed dehydration of ethanol to yield ethene. Show all the steps involved.

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hard

Examine the solubility of butan-1-ol and pentan-1-ol in water. Compare their solubilities with that of diethyl ether, which has a comparable molecular mass to butan-1-ol. Analyze the role of hydrogen bonding and the hydrophobic alkyl chain.

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hard

Demonstrate the complete mechanism for the acid-catalyzed dehydration of propan-2-ol to form propene. Analyze why this reaction is faster for tertiary alcohols.

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hard

Propose a detailed mechanism for the cleavage of t-butyl methyl ether with excess concentrated HI. Justify why the reaction follows an

S_N1

pathway.

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hard

Name the reactants required for the preparation of t-butyl ethyl ether using Williamson synthesis and explain why the alternative combination of reactants is not suitable.

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hard

Contrast the Williamson synthesis of t-butyl ethyl ether using two different sets of reactants: (i) sodium ethoxide and t-butyl chloride, and (ii) sodium t-butoxide and ethyl chloride. Analyze why one pathway is successful while the other fails.

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Alcohols, Phenols and EthersClass 12 Chemistry Practice Questions