Question 1

Propanone has a much higher boiling temperature than butane.

The main reason for this is

  A  

propanone has permanent dipole-dipole forces between its molecules while butane does not

  B  

propanone forms hydrogen bonds between its molecules while butane does not

  C  

propanone has stronger induced dipole-dipole forces between its molecules than butane

  D  

the carbon-oxygen double bond in propanone is very strong

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Question 2

CH3CH2COCH2CH3 reacts with hydrogen cyanide to form an organic product called a cyanohydrin.

Which feature applies to the cyanohydrin product?

  A  

it has one chiral centre

  B  

it is formed by electrophilic addition

  C  

it is formed via an intermediate which contains the C-OH group

  D  

its formation requires the use of cyanide ions as a catalyst

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Question 3

Structural isomerism and stereoisomerism should be considered when answering this question.

Each of the following carbonyl compounds is reacted with NaBH4. The product of each reaction is heated with concentrated phosphoric acid at 170°C, generating one product or a mixture of isomers.

Which carbonyl compound will produce the most isomers?

  A  

butanal

  B  

butanone

  C  

pentan-3-one


  D  

propanone

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Question 4

Ketones react with hydrogen cyanide, HCN, in the presence of cyanide ions, CN-.

Which of these ketones does not form a racemic mixture in this reaction?

  A  

CH3CH2CH2COCH3

  B  

CH3CH2COCH2CH3

  C  

CH3CH2CH2CH2COCH3

  D  

CH3CH2CH2COCH2CH3

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Question 5

Ketones react with hydrogen cyanide, HCN, in the presence of cyanide ions, CN-.

This type of reaction is classified as

  A  

nucleophilic substitution

  B  

nucleophilic addition

  C  

electrophilic addition

  D  

electrophilic substitution

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Question 6

Name the functional group in HCHO.

  A  

aldehyde

  B  

ketone

  C  

alcohol

  D  

carboxylic acid

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Question 7

What is the functional group in C6H5COCH3?

  A  

aldehyde

  B  

carboxylic acid

  C  

ester

  D  

ketone

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Question 8

Which of the following compounds would form an orange-red precipitate when heated with Fehling’s solution?

  A  

CH3CH2CN

  B  

CH3CH2COOH

  C  

CH3CHO


  D  

CH3COCH3

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Question 9

Which alcohol could not be produced by the reduction of an aldehyde or a ketone?

  A  

2,2-dimethylpropan-1-ol

  B  

2-methylbutan-2-ol

  C  

3-methylbutan-2-ol

  D  

pentan-3-ol

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Question 10

Which compound forms optically active compounds on reduction?

  A  

CH3CH2C(CH3)=CHCH3

  B  

CH3CH2C(CH3)=CH2

  C  

CH3COCH3

  D  

CH3CH2COCH3

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