1. The functional group of an ester is: a) –OH b) –COOH c) –COO– d)...

1. The functional group of an ester is:
a) –OH
b) –COOH
c) –COO–
d) –CHO

2. The general formula of an ester is:
a) RCOOH
b) RCOOR’
c) ROR’
d) RNH₂

3. The IUPAC suffix used for naming esters is:
a) –oate
b) –oic acid
c) –al
d) –one

4. The name of the ester derived from methanol and ethanoic acid is:
a) Methyl ethanoate
b) Ethyl methanoate
c) Ethyl ethanoate
d) Methyl methanoate

5. The ester formed from propanoic acid and ethanol is named:
a) Ethyl propanoate
b) Propyl ethanoate
c) Methyl propanoate
d) Ethyl methanoate

6. The ester formed by combining pentanoic acid and methanol is:
a) Methanol pentanoate
b) Methyl pentanoate
c) Pentyl methanoate
d) Methyl pentanoic acid

7. What is the correct IUPAC name for CH₃COOCH₃?
a) Methyl ethanoate
b) Ethyl methanoate
c) Methanol ethanoate
d) Methyl acetate

8. Which of the following esters is derived from butanoic acid and ethanol?
a) Ethyl butanoate
b) Butyl ethanoate
c) Ethyl butanol
d) Ethyl butanone

9. The name of the ester CH₃CH₂COOCH₃ is:
a) Methyl propanoate
b) Ethyl ethanoate
c) Methyl ethanoate
d) Propyl methanoate

10. The ester with the formula C₂H₅COOCH₂CH₃ is called:
a) Methyl ethanoate
b) Ethyl propanoate
c) Propyl ethanoate
d) Butyl methanoate

11. What is the correct name for CH₃CH₂CH₂COOCH₃?
a) Propyl methanoate
b) Methyl butanoate
c) Methyl propanoate
d) Ethyl butanoate

12. The ester produced from butanoic acid and methanol is called:
a) Methyl butanoate
b) Ethyl butanoate
c) Propyl butanoate
d) Butyl methanoate

13. Which of the following is the correct IUPAC name for HCOOCH₃?
a) Ethyl methanoate
b) Methyl methanoate
c) Methyl formate
d) Methyl ethanoate

14. The ester formed by the reaction of hexanoic acid and ethanol is:
a) Hexyl ethanoate
b) Ethyl hexanoate
c) Hexyl propanoate
d) Ethyl butanoate

15. What is the name of CH₃COOC₂H₅?
a) Ethyl methanoate
b) Methyl ethanoate
c) Ethyl ethanoate
d) Propyl ethanoate

16. The –COO– functional group is known as:
a) Aldehyde group
b) Carboxyl group
c) Ester group
d) Ketone group

17. Which of the following correctly represents the structure of methyl butanoate?
a) CH₃CH₂CH₂COOCH₃
b) CH₃COOCH₃
c) CH₃CH₂COOCH₂CH₃
d) CH₃COCH₃

18. Which ester has the molecular formula C₄H₈O₂?
a) Methyl propanoate
b) Ethyl ethanoate
c) Propyl methanoate
d) Butyl methanoate

19. The ester group in an alkanoate is always found:
a) At the end of the chain
b) In the middle of the chain
c) Attached to a benzene ring
d) In a branched-chain structure

20. Which of these esters is derived from ethanoic acid and butanol?
a) Butyl ethanoate
b) Ethyl butanoate
c) Propyl ethanoate
d) Methyl butanoate

21. Which ester corresponds to the molecular formula C₅H₁₀O₂?
a) Methyl butanoate
b) Propyl ethanoate
c) Ethyl propanoate
d) All of the above

22. The ester obtained from pentanoic acid and methanol is:
a) Pentyl methanoate
b) Methyl pentanoate
c) Ethyl pentanoate
d) Propyl butanoate

23. The ester CH₃CH₂COOCH₃ is named:
a) Methyl ethanoate
b) Methyl propanoate
c) Ethyl methanoate
d) Ethyl ethanoate

24. What is the correct IUPAC name for CH₃CH₂COOCH₂CH₃?
a) Ethyl butanoate
b) Methyl butanoate
c) Propyl ethanoate
d) Ethyl propanoate

25. Which of the following is the correct name for CH₃CH₂CH₂COOCH₂CH₃?
a) Butyl ethanoate
b) Ethyl butanoate
c) Methyl butanoate
d) Propyl butanoate

26. The ester responsible for the characteristic smell of bananas is:
a) Methyl butanoate
b) Ethyl ethanoate
c) Pentyl ethanoate
d) Butyl propanoate

27. The ester commonly known as "pineapple oil" is:
a) Ethyl ethanoate
b) Methyl butanoate
c) Amyl acetate
d) Propyl methanoate

28. The functional group in an ester is formed by:
a) Alcohol and ketone
b) Alcohol and carboxylic acid
c) Aldehyde and alcohol
d) Ketone and carboxylic acid

29. The ester used as a solvent in perfumes and nail polish removers is:
a) Ethyl ethanoate
b) Methyl butanoate
c) Propyl methanoate
d) Butyl ethanoate

30. Which of the following is the correct name for the ester CH₃CH₂COOCH₂CH₃?
a) Methyl ethanoate
b) Ethyl propanoate
c) Propyl methanoate
d) Ethyl butanoate?

In Chemistry
1 Answers Available
Asked by Bamidele on 18th February, 2025