Aldehydes – Primrose Kitten

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Aldehydes

Last updated: 13/03/2020

Edexcel A-Level Chemistry Carbonyl compounds Aldehydes

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Question 1 of 24

1. Question
What is the suffix of an aldehyde?
- -al
- -oic
- -ol
- -one
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Question 2 of 24

2. Question
What functional group does an aldehyde contain?
- COH
- OH
- COO
- COOH
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Question 3 of 24

3. Question
Which of the following is a carbonyl group?
- CO
- OH
- COO
- COH
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Question 4 of 24

4. Question
Which two atoms does the carbonyl group contain?
- Oxygen and carbon
- Carbon and hydrogen
- Oxygen and chlorine
- Hydrogen and oxygen
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Question 5 of 24

5. Question
What type of bond does a carbonyl group contain?
- Carbon-oxygen double bond
- Triple carbon bond
- Hydrogen bond
- Double carbon-carbon bond
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Question 6 of 24

6. Question
What type of intermolecular forces do aldehydes contain?
- Permanent dipole-dipole forces
- Ionic bonding
- Covalent bonding
- Induced dipole-dipole forces
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Question 7 of 24

7. Question
Describe the polarity of aldehydes.
- There is a polarised bond between the carbon and oxygen atoms
- There is a polarised bond between the hydrogen and carbon atoms
- There is a polarised bond between the two carbon atoms
- There is a polarised bond between the hydrogen and oxygen atoms
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Question 8 of 24

8. Question
Which of the following types of reactions can aldehydes take part in?
- Addition
- Neutralisation
- Radical substitution
- Electrolysis
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Question 9 of 24

9. Question
Which type of atoms can attack aldehydes?
- Nucleophiles
- Electrophiles
- Halogens
- Water
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Question 10 of 24

10. Question
What symbol is used to show reduction?
- [H]
- R
- (H)
- [R]
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Question 11 of 24

11. Question
What compounds are aldehydes reduced to?
- Primary alcohols
- Esters
- Carboxylic acids
- Secondary alcohols
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Question 12 of 24

12. Question
In order to reduce an aldehyde, what reducing agent is used?
- Sodium tetrahydridoborate
- Phenol
- Benzoic acid
- Sulfuric acid
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Question 13 of 24

13. Question
Why is the carbonyl group in an aldehyde able to be reduced?
- The carbonyl bond is unsaturated
- The carbonyl bond is strong
- The carbonyl bond is positive
- The carbonyl bond is saturated
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Question 14 of 24

14. Question
What type of reaction is the reaction between an aldehyde and potassium cyanide?
- Nucleophilic addition
- Nucleophilic substitution
- Electrophilic addition
- Electrophilic substitution
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Question 15 of 24

15. Question
What type of reaction is the reaction between an aldehyde and sodium tetrahydridoborate?
- Nucleophilic addition
- Nucleophilic substitution
- Electrophilic addition
- Electrophilic substitution
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Question 16 of 24

16. Question
What symbol is used to show oxidation?
- [O]
- (O)
- (OH)
- {O}
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Question 17 of 24

17. Question
In order to oxidise an aldehyde, what oxidising agent is used?
- Acidified potassium dichromate
- 2,4-dinitrophenylhydrazine
- Sodium tetrahydridoborate
- Hydrochloric acid
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Question 18 of 24

18. Question
What compounds are aldehydes oxidised to?
- Carboxylic acids
- Alcohols
- Halogens
- Esters
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Question 19 of 24

19. Question
When an aldehyde is oxidised, what colour is the solution?
- Green
- Yellow
- Colourless
- Red
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Question 20 of 24

20. Question
- Propanal
- Pentanoic acid
- Butanal
- Propanoic acid
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Question 21 of 24

21. Question
- 1,4-butandial
- 1,4-butanal
- 1,4-propandial
- Butanal
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Question 22 of 24

22. Question
- 3-chloropropanal
- 3-chlorobutanal
- Propanal
- 1-chloropropanal
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Question 23 of 24

23. Question
- 4-hydroxybutanal
- 4-butanal
- 3-hydroxybutanal
- 4-butanol
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Question 24 of 24

24. Question
- Benzaldehyde
- Benzoic acid
- Benzal
- Benzanal
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