50 multiple-choice questions on organic chemistry:
1. Which of the following elements is not commonly found in organic compounds?
a) Carbon
b) Hydrogen
c) Oxygen
d) Nitrogen
2. What is the general formula for an alkane?
a) CnH2n
b) CnH2n+2
c) CnH2n-2
d) CnH2n+4
3. Which of the following is an example of an aromatic compound?
a) Ethane
b) Propane
c) Benzene
d) Methanol
4. Which of the following is an example of a saturated hydrocarbon?
a) Ethene
b) Ethanol
c) Ethyne
d) Ethane
5. What is the functional group present in an alcohol?
a) -OH
b) -COOH
c) -NH2
d) -CHO
6. Which of the following is an example of a primary alcohol?
a) Methanol
b) Ethanol
c) Propanal
d) Butanol
7. Which of the following is an unsaturated hydrocarbon?
a) Benzene
b) Ethane
c) Propane
d) Butane
8. What is the IUPAC name of CH3CH2CH2CH3?
a) Methane
b) Ethane
c) Propane
d) Butane
9. Which of the following functional groups is present in aldehydes?
a) -OH
b) -COOH
c) -CHO
d) -NH2
10. What is the IUPAC name of CH3COOH?
a) Acetic acid
b) Ethanoic acid
c) Propanoic acid
d) Butanoic acid
11. Which of the following is an example of a ketone?
a) Methanol
b) Ethanol
c) Propanone
d) Butanol
12. What is the IUPAC name of CH3CH2OH?
a) Ethane
b) Ethanol
c) Ethene
d) Ethyne
13. Which of the following is an example of an aldehyde?
a) Methanol
b) Ethanol
c) Propanal
d) Butanol
14. What is the name of the functional group present in carboxylic acids?
a) -OH
b) -COOH
c) -CHO
d) -NH2
15. What is the IUPAC name of CH3CH2COCH3?
a) Acetone
b) Ethanal
c) Propane
d) Butanone
16. Which of the following is not a primary alcohol?
a) Methanol
b) Ethanol
c) Propanol
d) Butanol
17. What is the IUPAC name of CH3COCH3?
a) Acetone
b) Ethanol
c) Propanone
d) Butanol
18. What is the general formula for an alkene?
a) CnH2n
b) CnH2n+2
c) CnH2n-2
d) CnH2n+4
19. Which of the following is an example of an alkene?
a) Ethane
b) Ethanol
c) Ethene
d) Ethyne
20. What is the name of the functional group present in ethers?
a) -OH
b) -COOH
c) -O-
d) -CHO
21. Which of the following is an example of an ether?
a) Methanol
b) Ethanol
c) Dimethyl ether
d) Butanol
22. What is the IUPAC name of CH3OCH3?
a) Methanol
b) Ethanol
c) Methoxy
d) Ethoxy
23. Which of the following compounds is a strong acid?
a) Acetic acid
b) Ethanoic acid
c) Hydrochloric acid
d) Butanoic acid
24. Which of the following compounds is a weak acid?
a) Citric acid
b) Acetic acid
c) Hydrochloric acid
d) Sulfuric acid
25. What is the general formula for an alkyne?
a) CnH2n
b) CnH2n+2
c) CnH2n-2
d) CnH2n+4
26. Which of the following is an example of an alkyne?
a) Ethane
b) Ethanol
c) Ethene
d) Ethyne
27. What is the name of the functional group present in amines?
a) -NH2
b) -COOH
c) -CHO
d) -O-
28. Which of the following is an example of a primary amine?
a) Methanol
b) Ethanol
c) Propanamine
d) Butanol
29. What is the IUPAC name of CH3NH2?
a) Methane
b) Ethane
c) Methanol
d) Ethanamine
30. Which of the following is an example of a secondary alcohol?
a) Methanol
b) Ethanol
c) Propanal
d) 2-propanol
31. What is the IUPAC name of C6H6?
a) Benzene
b) Hexane
c) Ethene
d) Ethane
32. Which of the following is not an example of a conjugated system?
a) Benzene
b) Butadiene
c) Cyclohexane
d) Cyclopentadiene
33. What is the IUPAC name of CH3CH2CH2CH2COOH?
a) Propanoic acid
b) Butanoic acid
c) Pentanoic acid
d) Hexanoic acid
34. Which of the following compounds is an example of a carboxylic acid?
a) Ethanol
b) Methanoic acid
c) Methanol
d) Ethanal
35. What is the IUPAC name of CH3CHO?
a) Acetone
b) Methanol
c) Ethanal
d) Propanone
36. Which of the following compounds is an example of an aldehyde?
a) Methanol
b) Ethanol
c) Propanol
d) Butanal
37. What is the IUPAC name of CH3CH2COOH?
a) Acetic acid
b) Ethanoic acid
c) Propanoic acid
d) Butanoic acid
38. Which of the following compounds has a double bond?
a) Ethanol
b) Ethene
c) Ethyne
d) Ethane
39. What is the IUPAC name of CH3CH2CH2CH3?
a) Methane
b) Ethane
c) Propane
d) Butane
40. Which of the following compounds has a triple bond?
a) Ethane
b) Ethene
c) Ethyne
d) Ethanol
41. What is the IUPAC name of CH3COCH3?
a) Acetone
b) Ethanol
c) Propanone
d) Butanol
42. Which of the following compounds is an example of an ether?
a) Methanol
b) Ethanol
c) Dimethyl ether
d) Butanol
43. What is the IUPAC name of CH3OCH3?
a) Methanol
b) Ethanol
c) Methoxy
d) Ethoxy
44. Which of the following compounds is a strong base?
a) Sodium hydroxide
b) Ammonium hydroxide
c) Acetic acid
d) Ethanoic acid
45. Which of the following compounds is a weak base?
a) Sodium hydroxide
b) Ammonium hydroxide
c) Hydrochloric acid
d) Sulfuric acid
46. What is the IUPAC name of CH3NH2?
a) Methane
b) Ethane
c) Methanol
d) Ethanamine
47. Which of the following compounds is an example of an amine?
a) Ethanol
b) Methanoic acid
c) Methanol
d) Ethanamine
48. Which of the following compounds is an example of a secondary amine?
a) Methanol
b) Ethanol
c) Propanamine
d) Butanol
49. What is the IUPAC name of C6H6?
a) Benzene
b) Hexane
c) Ethene
d) Ethane
50. Which of the following compounds is an example of an aromatic compound?
a) Ethane
b) Propane
c) Benzene
d) Methanol
Note: The answer key for these questions is not provided here.
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