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Nomenclature MCQ • NEB/CEE Chemistry

CEE NEXUS Team May 05, 2026
Nomenclature MCQ • NEB/CEE Chemistry

🧪 IUPAC Nomenclature

NEB / CEE Chemistry • Organic Chemistry • Complete Study Material

📘 What is IUPAC Nomenclature?

IUPAC stands for International Union of Pure and Applied Chemistry. It provides a systematic method for naming organic compounds so that each compound has a unique and universally accepted name. The IUPAC name consists of three parts: Prefix (substituents), Word Root (number of carbon atoms), and Suffix (functional group).

Number of CWord Root
1Meth
2Eth
3Prop
4But
5Pent
6Hex
7Hept
8Oct
9Non
10Dec
Nomenclature of Organic Compounds
⬇ Skip to 80 MCQ Quiz ⬇

📊 Functional Group Priority Order (Decreasing)

ClassSuffixPrefix
Carboxylic acid-oic acidcarboxy-
Sulphonic acid-sulphonic acidsulpho-
Ester-oatealkoxycarbonyl-
Acid halide-oyl halidehalocarbonyl-
Amide-amidecarbamoyl-
Nitrile-nitrilecyano-
Aldehyde-alformyl-
Ketone-oneoxo-
Alcohol-olhydroxy-
Amine-amineamino-
Alkene/Alkyne-ene/-yne—

For alkanes, suffix is -ane. Longest chain is selected, numbered to give lowest locant to substituents.

💡 Key Naming Rules

  • Longest chain rule: Select the longest continuous carbon chain.
  • Lowest locant rule: Number so that the principal functional group gets the lowest number.
  • Alphabetical order: Substituents are written in alphabetical order (di, tri, sec, tert ignored; iso, neo considered).
  • Multiple bonds: If both double and triple bonds present, double bond gets preference in numbering if at equal distance.
© CEE NEXUS | Chemistry Learning Resource

🧪 Nomenclature MCQ Quiz

NEB / CEE Chemistry • 80 MCQs • IUPAC Naming

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🪱 Earthworm MCQ

1. IUPAC name of CH₄ is:

1 carbon = Meth

2. IUPAC name of C₂H₆ is:

2 carbons with single bond = Ethane

3. The word root for 5 carbon atoms is:

Penta = 5 (think pentagon)

4. Suffix for alkane is:

AlkANE = -ane suffix

5. Suffix for alcohol is:

AlcohOL = -ol

6. IUPAC name of C₃H₈ is:

7. Suffix for carboxylic acid is:

8. Suffix for aldehyde is:

9. Suffix for ketone is:

10. CH₃-CH₂-CH₂-CH₃ is:

🧪 Periodic Table MCQ

11. CH₂=CH₂ is named as:

12. HC≡CH is named as:

13. CH₃-OH is named as:

14. CH₃-CH₂-OH is:

15. H-CHO is named as:

16. CH₃-CHO is:

17. CH₃-CO-CH₃ is:

18. H-COOH is:

19. CH₃-COOH is:

20. CH₃-O-CH₃ is:

21. CH₃-NH₂ is:

22. Which has highest priority in nomenclature?

23. Common name of methanoic acid is:

24. Common name of ethanoic acid is:

25. Word root for 7 carbons:

26. Suffix for nitrile is:

27. CH₃-CH₂-CHO is:

28. The prefix for -NH₂ as substituent is:

29. The prefix for -OH as substituent is:

30. CH₃-CH=CH₂ is:

🟡 Sulphur MCQ

31. Isobutane is IUPAC named as:

32. Neopentane is IUPAC named as:

33. CH₂=CH-CH=CH₂ is:

34. Functional group suffix for ester is:

35. CH₃-C≡CH is:

36. The prefix for -Cl is:

37. CH₃-CHCl-CH₃ is:

38. The IUPAC name of acetone is:

39. CH₃-CH₂-COOH is:

40. The suffix for acid chloride is:

41. CH₃-CH₂-O-CH₂-CH₃ is:

42. The prefix for -NO₂ is:

43. CH₃-CN is:

44. CH₃-CONH₂ is:

45. In CH₂=CH-CH₂-CH₃, double bond is at:

46. The name of CH₂=CH-CH₂-CH₃ is:

47. Common name of propanoic acid is:

48. Glycerol has how many OH groups?

49. CH₃-CH(OH)-CH₃ is:

50. CH₃-CO-CH₂-CH₃ is:

🐸 Frog MCQ

51. CH₃-CH=C(CH₃)-CH₃ is:

52. The prefix for -Br is:

53. CH₃-CH₂-CH₂-OH is:

54. HC≡C-CH₃ is:

55. The functional group -CO- is named as suffix:

56. CH₃-CH₂-NH₂ is:

57. The IUPAC name of CH₃-CH=CH-CH₃ is:

58. Common name of methanol is:

59. Ethane-1,2-diol is commonly called:

60. CH₃-CH₂-Cl is:

61. CH₃-COOCH₃ is:

62. The IUPAC suffix for alkynes is:

63. CH₃-CH₂-CH₂-CHO is:

64. The common name of ethyne is:

65. CH₃-CH₂-CH₂-CH₂-CH₃ is:

66. The prefix for -F is:

67. CH₃-CH₂-CH=CH₂ is:

68. CH₃-CH₂-C≡CH is:

69. The prefix for -I is:

70. CH₃-CH₂-CO-CH₃ is:

71. CH₃-CH(CH₃)-CH₃ is:

72. CH₃-CH₂-CH₂-COOH is:

73. CH₃-O-CH₂-CH₃ is:

74. CH₃-CH₂-CONH₂ is:

75. CH₃-CH=CH-CHO is:

76. Assertion (A): -COOH has higher priority than -CHO.
Reason (R): Carboxylic acid is senior to aldehyde.

77. CH₃-CH₂-CH₂-CN is:

78. CH₃-COCl is:

79. CH₃-CH₂-CH(CH₃)-CH₃ is:

80. CH₂=CH-CH₂-CH₂-CH₃ is:

🧪 Periodic Table MCQ
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