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Course: IAL Edexcel Modular (Chemistry)
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IAL Edexcel Modular (Chemistry)

Unit 1. Structure, Bonding and Introduction to Organic Chemistry

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Unit 2. Energetics, Group Chemistry, Halogenoalkanes and Alcohols

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Unit 3. Practical Skills in Chemistry I

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Unit 4. Rates, Equilibria and Further Organic Chemistry

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Unit 5. Transition Metals and Organic Nitrogen Chemistry

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Unit 6. Practical Skills in Chemistry II

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Quiz

4.6 Organic Chemistry: Carbonyls – Check yourself

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4.6 Organic IAL Modular Chemistry check yourself quiz: free practice for IAL Edexcel Modular (chemistry). Work through this 4.6 Organic IAL Modular Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 4.6 Organic Chemistry: Carbonyls — Notes — IAL Chemistry Notes lesson. More practice: IAL Edexcel Modular (chemistry) — all units. Syllabus: Pearson Edexcel International A Levels.

  • Questions count: 10
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
Which reagent gives a silver mirror with aldehydes?
Fehling's
Tollens'
2,4-DNPH
Bromine water
2.
Product of reducing butanone with LiAlH4?
Butan-2-ol
Butan-1-ol
Butanoic acid
Butanal
3.
Mechanism for HCN with ethanal?
Electrophilic addition
Nucleophilic substitution
Free-radical substitution
Nucleophilic addition
4.
Which reagent reacts with both aldehydes and ketones to give an orange precipitate?
Tollens'
Acidified dichromate
2,4-DNPH
Fehling's
5.
Why do carbonyls have lower boiling points than alcohols of similar Mr?
They have no hydrogen bonds between molecules
They have ionic bonds
They are non-polar
They have fewer electrons
6.
HCN adds to propanal giving a racemic mixture because:
the product is achiral
CN- attacks the planar C=O from either side equally
the reaction is SN1
the C=O is tetrahedral
7.
Which statement best describes Hydroxynitrile?
An alkaline copper(II) complex (blue) reduced by aliphatic aldehydes to red Cu2O.
A carbonyl compound with the C=O bonded to two carbon atoms; name ends in -one.
A compound containing both OH and CN groups on the same carbon, formed from HCN addition to a carbonyl.
A reaction in which a nucleophile attacks the electron-deficient carbonyl carbon and the C=O becomes a single bond.
8.
Which statement best describes Aldehyde?
A compound containing both OH and CN groups on the same carbon, formed from HCN addition to a carbonyl.
A carbonyl compound with the C=O bonded to two carbon atoms; name ends in -one.
A carbonyl compound with the C=O at the end of the chain, bonded to at least one H (-CHO); name ends in -al.
Warming with iodine in alkali; a yellow CHI3 precipitate shows a CH3CO- group or CH3CH(OH)- group.
9.
Which statement best describes Fehling's solution?
Warming with iodine in alkali; a yellow CHI3 precipitate shows a CH3CO- group or CH3CH(OH)- group.
An alkaline copper(II) complex (blue) reduced by aliphatic aldehydes to red Cu2O.
Ammoniacal silver nitrate, [Ag(NH3)2]+, which is reduced to a silver mirror by aldehydes.
A carbonyl compound with the C=O at the end of the chain, bonded to at least one H (-CHO); name ends in -al.
10.
Which statement best describes Reducing agent LiAlH4?
A reaction in which a nucleophile attacks the electron-deficient carbonyl carbon and the C=O becomes a single bond.
Lithium tetrahydridoaluminate in dry ether, which reduces carbonyls to alcohols using hydride ions.
Brady's reagent; forms an orange/yellow precipitate with any carbonyl compound.
The C=O functional group found in aldehydes and ketones.
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Part of Unit 4. Rates, Equilibria and Further Organic Chemistry — see every lesson and quiz in this unit.
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