Chapter 7: Alcohols, Phenols and Ethers MCQs | chemistry Class 12 CBSE

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Chapter 7: Alcohols, Phenols and Ethers MCQs | chemistry Class 12 CBSE | ByteNotes.in

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Question 1

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Which of the following is the correct IUPAC name of CH₃–CH(OH)–CH₃?

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Question 2

Objective

The reaction of propene with diborane followed by H₂O₂/NaOH gives:

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Question 3

Objective

Which reagent is used to oxidise a primary alcohol selectively to an aldehyde without further oxidation to carboxylic acid?

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Question 4

Objective

Which of the following alcohols is most easily dehydrated?

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Question 5

Objective

The pKa of phenol is 10.0 and that of ethanol is 15.9. This indicates that:

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Question 6

Objective

In Williamson synthesis, which type of alkyl halide gives the best yield of ether?

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Question 7

Objective

The reaction of phenol with CHCl₃ in presence of aqueous NaOH introduces which group at the ortho position?

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Question 8

Objective

Ethanol is produced industrially from ethene by:

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Question 9

Objective

o-Nitrophenol can be separated from p-nitrophenol by steam distillation because:

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Question 10

Objective

The carbon–oxygen bond length in phenol (136 pm) is shorter than in methanol (142 pm) because:

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Question 11

Objective

When a Grignard reagent reacts with an aldehyde (other than methanal), the product obtained after hydrolysis is:

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Question 12

Objective

Which of the following compounds will give a positive Lucas test immediately at room temperature?

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Question 13

Objective

The order of reactivity of hydrogen halides with ethers is:

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Question 14

Objective

Most of the world's phenol is produced commercially from:

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Question 15

Objective

The formation of ether from primary alcohol by acid dehydration at lower temperature involves which type of mechanism?

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Question 16

Objective

Which of the following is NOT a method for preparation of phenol?

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Question 17

Objective

The fermentation of glucose with zymase enzyme gives:

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Question 18

Objective

Aspirin is prepared by acetylation of salicylic acid. The introduction of an acetyl group in an alcohol or phenol is known as:

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Question 19

Objective

When phenol is treated with bromine water, the product formed is:

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Question 20

Objective

In the reaction of anisole with bromine in ethanoic acid, the major product is:

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Chapter 7: Alcohols, Phenols and Ethers | MCQs

Which of the following is the correct IUPAC name of CH₃–CH(OH)–CH₃?

The reaction of propene with diborane followed by H₂O₂/NaOH gives:

Which reagent is used to oxidise a primary alcohol selectively to an aldehyde without further oxidation to carboxylic acid?

Which of the following alcohols is most easily dehydrated?

The pKa of phenol is 10.0 and that of ethanol is 15.9. This indicates that:

In Williamson synthesis, which type of alkyl halide gives the best yield of ether?

The reaction of phenol with CHCl₃ in presence of aqueous NaOH introduces which group at the ortho position?

Ethanol is produced industrially from ethene by:

o-Nitrophenol can be separated from p-nitrophenol by steam distillation because:

The carbon–oxygen bond length in phenol (136 pm) is shorter than in methanol (142 pm) because:

When a Grignard reagent reacts with an aldehyde (other than methanal), the product obtained after hydrolysis is:

Which of the following compounds will give a positive Lucas test immediately at room temperature?

The order of reactivity of hydrogen halides with ethers is:

Most of the world's phenol is produced commercially from:

The formation of ether from primary alcohol by acid dehydration at lower temperature involves which type of mechanism?

Which of the following is NOT a method for preparation of phenol?

The fermentation of glucose with zymase enzyme gives:

Aspirin is prepared by acetylation of salicylic acid. The introduction of an acetyl group in an alcohol or phenol is known as:

When phenol is treated with bromine water, the product formed is:

In the reaction of anisole with bromine in ethanoic acid, the major product is:

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