Class 12 Chemistry · Chapter 7 · Test 3
Esters and Acyl Chlorides
40 MCQs
40 questions · 35 min · 40 marks
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Sample questions
The first 5 of 40. Try each one, then tap to see the answer.
Question 1
Esters have lower boiling points than the corresponding alcohols and carboxylic acids because esters:
- AAre ionic
- BCannot form hydrogen bonds between their molecules
- CHave higher molar mass
- DAre aromatic
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Answer: B
They lack an O-H group.
Question 2
The boiling point of ethyl ethanoate is:
- A118 °C
- B17 °C
- C100 °C
- D77 °C
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Answer: D
This is lower than that of ethanoic acid (118 °C).
Question 3
Esters are less soluble or insoluble in water because they:
- ALack the ability to form hydrogen bonds
- BAre ionic
- CAre acidic
- DHave high boiling points
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Answer: A
Without O-H bonds they cannot hydrogen bond like alcohols.
Question 4
Volatile esters are liquids with:
- APungent vinegar smells
- BFishy smells
- CSweet fruity smells
- DNo smell
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Answer: C
Fragrances of fruits are due to esters.
Question 5
Esters are used as:
- AFertilisers
- BSolvents and flavouring agents
- CAntacids
- DOxidising agents
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Answer: B
They are used in fruit drinks and sweets and as solvents.
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