Higher Chemistry

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Higher Chemistry
Unit 2 Section 4 Aldehydes Ketones Multiple
Choice Questions
This is designed to be used by teachers to help
students develop skills in answering multiple
choice questions.
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Higher ChemistryUnit 2 - Section 4 Aldehydes and
KetonesMultiple Choice Questions

• 1. Which of the following is an isomer of
  hexanal?
• A. 2-methyl butanal
• B. 3-methylpentan-2-one
• C. 2,2-dimethylbutan-1-ol
• D. 3-ethylpentanal

B.
Answer
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Higher ChemistryUnit 2 - Section 4 Aldehydes and
Ketones Multiple Choice Questions

• 2. Which of the following cannot be classed as
  oxidation?
• A. CH3CH2OH CH3CHO
• B. CH3CH(OH)CH3 CH3COCH3
• C. CH3COCH3 CH3CH(OH)CH3
• D. CH3CH2OH O2 CO2 H2O

C.
Answer
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Higher ChemistryUnit 2 - Section 4 Aldehydes and
Ketones Multiple Choice Questions

• 3. Which alkanol will produce a ketone on
  oxidation using acidified potassium dichromate?
• A. 2-methyl butan-2-ol
• B. pentan-1-ol
• C. 3-methyl hexan-2-ol
• D. 2-methyl propan-2-ol

C.
Answer
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Higher ChemistryUnit 2 - Section 4 Aldehydes and
Ketones Multiple Choice Questions

• 4. The alcohol shown below will
• A. oxidise to form an aldehyde
• B. oxidise to form a ketone
• C. oxidise to form an aldehyde and a ketone
• D. not oxidise

D.
Answer
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Higher ChemistryUnit 2 - Section 4 Aldehydes and
Ketones Multiple Choice Questions

• 5. Oxidation of 4-methylpentan-2-ol to the
  corresponding ketone results in the alcohol
• A. losing 2g per mole
• B. gaining 2g per mole
• C. gaining 16g per mole
• D. not changing in mass

A.
Answer
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Higher ChemistryUnit 2 - Section 4 Aldehydes and
Ketones Multiple Choice Questions

• 6. When propanal is heated with Benedicts
  solution there is
• A. a colour change from green to orange
• B. a colour change from blue to red/orange
• C. a negative test with Tollens reagent
• D. no colour change

B.
Answer
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Higher ChemistryUnit 2 - Section 4 Aldehydes and
Ketones Multiple Choice Questions

• When butanone is heated with Benedicts solution
  there is
• A. a colour change from orange to green
• B. a colour change from blue to red/orange
• C. a silver mirror formed
• D. no colour change

D.
Answer
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Higher ChemistryUnit 2 - Section 4 Aldehydes and
Ketones Multiple Choice Questions

• 8. When the vapour of liquid X is passed over hot
  copper(II)oxide, a reaction occurs and the vapour
  produced gives an orange precipitate with
  Benedicts solution. X could be
• A. propan-1-ol
• B. propan-2-ol
• C. propanal
• D. propanone

A.
Answer
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Higher ChemistryUnit 2 - Section 4 Aldehydes and
Ketones Multiple Choice Questions

• 9. Butan-1-ol is converted to butanal by warming
  it with potassium dichromate acidified with
  sulphuric acid. The purpose of the acidified
  dichromate is to
• A. reduce the alcohol
• B. dehydrate the alcohol
• C. hydrate the alcohol
• D. oxidise the alcohol

D.
Answer
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Higher ChemistryUnit 2 - Section 4 Aldehydes and
Ketones Multiple Choice Questions

• 10.Which compound is formed by the oxidation of
  propan-2-ol
• A. CH3CH2CHO
• B. CH3COCH3
• C. CH3CH2COOH
• D. CH3CH2CH2OH

B.
Answer