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Class 9 & Class 10 Resources Center

Carbon and Its CompoundsIUPAC Nomenclature Practice

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Class 10 BSEB Science
Carbon and Its Compounds
IUPAC Nomenclature Practice

Instruction: Name each compound using its correct IUPAC name.

Set 1 – Basic Carbon Chains

  1. \(\mathrm{CH_4}\)
  2. \(\mathrm{CH_3-CH_3}\)
  3. \(\mathrm{CH_3-CH_2-CH_3}\)
  4. \(\mathrm{CH_3-CH_2-CH_2-CH_3}\)
  5. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_3}\)
  6. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-CH_3}\)
  7. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3}\)
  8. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3}\)
  9. \(\mathrm{CH_2=CH_2}\)
  10. \(\mathrm{CH_2=CH-CH_3}\)
  11. \(\mathrm{CH_2=CH-CH_2-CH_3}\)
  12. \(\mathrm{CH_3-CH=CH-CH_3}\)
  13. \(\mathrm{CH\equiv CH}\)
  14. \(\mathrm{CH\equiv C-CH_3}\)
  15. \(\mathrm{CH\equiv C-CH_2-CH_3}\)
  16. \(\mathrm{CH_3-C\equiv C-CH_3}\)
  17. \(\mathrm{CH_3-OH}\)
  18. \(\mathrm{CH_3-CH_2-OH}\)
  19. \(\mathrm{CH_3-CHO}\)
  20. \(\mathrm{CH_3-COOH}\)
Answers:
  1. Methane
  2. Ethane
  3. Propane
  4. Butane
  5. Pentane
  6. Hexane
  7. Heptane
  8. Octane
  9. Ethene
  10. Propene
  11. But-1-ene
  12. But-2-ene
  13. Ethyne
  14. Propyne
  15. But-1-yne
  16. But-2-yne
  17. Methanol
  18. Ethanol
  19. Ethanal
  20. Ethanoic acid

Set 2 – Alkanes, Alkenes and Alkynes

  1. \(\mathrm{CH_3-CH_2-CH_2-CH_3}\)
  2. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_3}\)
  3. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-CH_3}\)
  4. \(\mathrm{CH_2=CH-CH_2-CH_2-CH_3}\)
  5. \(\mathrm{CH_3-CH=CH-CH_2-CH_3}\)
  6. \(\mathrm{CH_3-CH_2-CH=CH-CH_2-CH_3}\)
  7. \(\mathrm{CH_2=CH-CH_2-CH_2-CH_2-CH_3}\)
  8. \(\mathrm{CH_3-CH=CH-CH_2-CH_2-CH_3}\)
  9. \(\mathrm{CH\equiv C-CH_2-CH_2-CH_3}\)
  10. \(\mathrm{CH_3-C\equiv C-CH_2-CH_3}\)
  11. \(\mathrm{CH_3-CH_2-C\equiv C-CH_2-CH_3}\)
  12. \(\mathrm{CH\equiv C-CH_2-CH_2-CH_2-CH_3}\)
  13. \(\mathrm{CH_3-CH_2-CH_2-C\equiv CH}\)
  14. \(\mathrm{CH_3-CH_2-CH=CH_2}\)
  15. \(\mathrm{CH_3-CH=CH-CH_2-CH_2-CH_3}\)
  16. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_3}\)
  17. \(\mathrm{CH_2=CH-CH_2-CH_2-CH_2-CH_2-CH_3}\)
  18. \(\mathrm{CH_3-CH_2-CH_2-CH=CH-CH_3}\)
  19. \(\mathrm{CH\equiv C-CH_2-CH_2-CH_2-CH_3}\)
  20. \(\mathrm{CH_3-CH_2-CH_2-CH_2-C\equiv CH}\)
Answers:
  1. Butane
  2. Pentane
  3. Hexane
  4. Pent-1-ene
  5. Pent-2-ene
  6. Hex-3-ene
  7. Hex-1-ene
  8. Hex-2-ene
  9. Pent-1-yne
  10. Pent-2-yne
  11. Hex-3-yne
  12. Hex-1-yne
  13. Pent-1-yne
  14. But-1-ene
  15. Hex-2-ene
  16. Pentane
  17. Hept-1-ene
  18. Hex-2-ene
  19. Hex-1-yne
  20. Hex-1-yne

Set 3 – Alcohols

  1. \(\mathrm{CH_3-OH}\)
  2. \(\mathrm{CH_3-CH_2-OH}\)
  3. \(\mathrm{CH_3-CH_2-CH_2-OH}\)
  4. \(\mathrm{CH_3-CH(OH)-CH_3}\)
  5. \(\mathrm{CH_3-CH_2-CH_2-CH_2-OH}\)
  6. \(\mathrm{CH_3-CH(OH)-CH_2-CH_3}\)
  7. \(\mathrm{CH_3-CH_2-CH(OH)-CH_3}\)
  8. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-OH}\)
  9. \(\mathrm{CH_3-CH(OH)-CH_2-CH_2-CH_3}\)
  10. \(\mathrm{CH_3-CH_2-CH(OH)-CH_2-CH_3}\)
  11. \(\mathrm{CH_3-CH_2-CH_2-CH(OH)-CH_2-CH_3}\)
  12. \[ \begin{array}{c} \mathrm{\ \ CH_3}\\[-4pt] \mathrm{\ \ |}\\[-4pt] \mathrm{CH_3-CH-OH} \end{array} \]
  13. \[ \begin{array}{c} \mathrm{\ \ CH_3}\\[-4pt] \mathrm{\ \ |}\\[-4pt] \mathrm{CH_3-CH-CH_2-OH} \end{array} \]
  14. \[ \begin{array}{c} \mathrm{\ \ CH_3}\\[-4pt] \mathrm{\ \ |}\\[-4pt] \mathrm{CH_3-CH-CH_2-CH_3}\\[-4pt] \end{array} \]
  15. \(\mathrm{CH_3-CH(CH_3)-CH_2-OH}\)
  16. \(\mathrm{CH_3-C(OH)(CH_3)-CH_2-CH_3}\)
  17. \(\mathrm{CH_3-CH_2-C(OH)(CH_3)-CH_3}\)
  18. \(\mathrm{CH_3-CH(OH)-CH_2-CH_2-CH_2-CH_3}\)
  19. \(\mathrm{CH_3-CH_2-CH(OH)-CH_2-CH_2-CH_3}\)
  20. \(\mathrm{CH_3-CH_2-CH_2-CH(OH)-CH_2-CH_3}\)
Answers:
  1. Methanol
  2. Ethanol
  3. Propan-1-ol
  4. Propan-2-ol
  5. Butan-1-ol
  6. Butan-2-ol
  7. Butan-2-ol
  8. Pentan-1-ol
  9. Pentan-2-ol
  10. Pentan-3-ol
  11. Hexan-3-ol
  12. Propan-2-ol
  13. 2-Methylpropan-1-ol
  14. 2-Methylbutane
  15. 2-Methylpropan-1-ol
  16. 2-Methylbutan-2-ol
  17. 2-Methylbutan-2-ol
  18. Hexan-2-ol
  19. Hexan-3-ol
  20. Hexan-3-ol

Set 4 – Aldehydes

  1. \(\mathrm{H-CHO}\)
  2. \(\mathrm{CH_3-CHO}\)
  3. \(\mathrm{CH_3-CH_2-CHO}\)
  4. \(\mathrm{CH_3-CH_2-CH_2-CHO}\)
  5. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CHO}\)
  6. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-CHO}\)
  7. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-CH_2-CHO}\)
  8. \(\mathrm{CH_3-CH(CH_3)-CHO}\)
  9. \(\mathrm{CH_3-CH(CH_3)-CH_2-CHO}\)
  10. \(\mathrm{CH_3-CH_2-CH(CH_3)-CHO}\)
  11. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH_2-CHO}\)
  12. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH_2-CHO}\)
  13. \(\mathrm{CH_3-CH(CH_3)-CH(CH_3)-CHO}\)
  14. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH(CH_3)-CHO}\)
  15. \(\mathrm{CH_3-CH_2-CH_2-CH(CH_3)-CHO}\)
  16. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH(CH_3)-CHO}\)
  17. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH_2-CH_2-CHO}\)
  18. \(\mathrm{CH_3-CH(CH_3)-CH(CH_3)-CH_2-CHO}\)
  19. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH(CH_3)-CH_2-CHO}\)
  20. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH_2-CH(CH_3)-CHO}\)
Answers:
  1. Methanal
  2. Ethanal
  3. Propanal
  4. Butanal
  5. Pentanal
  6. Hexanal
  7. Heptanal
  8. 2-Methylpropanal
  9. 3-Methylbutanal
  10. 2-Methylbutanal
  11. 4-Methylpentanal
  12. 3-Methylpentanal
  13. 2,3-Dimethylbutanal
  14. 2,3-Dimethylpentanal
  15. 2-Methylpentanal
  16. 2,4-Dimethylpentanal
  17. 3-Methylhexanal
  18. 2,3-Dimethylpentanal
  19. 2,3-Dimethylhexanal
  20. 2,5-Dimethylhexanal

Set 5 – Ketones

  1. \(\mathrm{CH_3-CO-CH_3}\)
  2. \(\mathrm{CH_3-CO-CH_2-CH_3}\)
  3. \(\mathrm{CH_3-CH_2-CO-CH_2-CH_3}\)
  4. \(\mathrm{CH_3-CO-CH_2-CH_2-CH_3}\)
  5. \(\mathrm{CH_3-CH_2-CO-CH_2-CH_2-CH_3}\)
  6. \(\mathrm{CH_3-CO-CH_2-CH_2-CH_2-CH_3}\)
  7. \(\mathrm{CH_3-CH_2-CO-CH_2-CH_2-CH_3}\)
  8. \(\mathrm{CH_3-CO-CH_2-CH(CH_3)-CH_3}\)
  9. \(\mathrm{CH_3-CO-CH(CH_3)-CH_2-CH_3}\)
  10. \(\mathrm{CH_3-CH(CH_3)-CO-CH_2-CH_3}\)
  11. \(\mathrm{CH_3-CO-CH_2-CH_2-CH(CH_3)-CH_3}\)
  12. \(\mathrm{CH_3-CH(CH_3)-CO-CH_2-CH_2-CH_3}\)
  13. \(\mathrm{CH_3-CH_2-CO-CH(CH_3)-CH_3}\)
  14. \(\mathrm{CH_3-CO-CH(CH_3)-CH(CH_3)-CH_3}\)
  15. \(\mathrm{CH_3-CH(CH_3)-CO-CH(CH_3)-CH_3}\)
  16. \(\mathrm{CH_3-CO-CH_2-CH_2-CH_2-CH_2-CH_3}\)
  17. \(\mathrm{CH_3-CH_2-CO-CH_2-CH_2-CH_2-CH_3}\)
  18. \(\mathrm{CH_3-CH_2-CH_2-CO-CH_2-CH_2-CH_3}\)
  19. \(\mathrm{CH_3-CO-CH_2-CH(CH_3)-CH_2-CH_3}\)
  20. \(\mathrm{CH_3-CH(CH_3)-CO-CH_2-CH(CH_3)-CH_3}\)
Answers:
  1. Propanone
  2. Butan-2-one
  3. Pentan-3-one
  4. Pentan-2-one
  5. Hexan-3-one
  6. Hexan-2-one
  7. Hexan-3-one
  8. 4-Methylpentan-2-one
  9. 3-Methylpentan-2-one
  10. 3-Methylpentan-2-one
  11. 5-Methylhexan-2-one
  12. 2-Methylhexan-3-one
  13. 2-Methylpentan-3-one
  14. 3,4-Dimethylpentan-2-one
  15. 2,4-Dimethylpentan-3-one
  16. Heptan-2-one
  17. Heptan-3-one
  18. Heptan-4-one
  19. 4-Methylhexan-2-one
  20. 2,5-Dimethylhexan-3-one

Set 6 – Carboxylic Acids

  1. \(\mathrm{H-COOH}\)
  2. \(\mathrm{CH_3-COOH}\)
  3. \(\mathrm{CH_3-CH_2-COOH}\)
  4. \(\mathrm{CH_3-CH_2-CH_2-COOH}\)
  5. \(\mathrm{CH_3-CH_2-CH_2-CH_2-COOH}\)
  6. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-COOH}\)
  7. \(\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-CH_2-COOH}\)
  8. \(\mathrm{CH_3-CH(CH_3)-COOH}\)
  9. \(\mathrm{CH_3-CH_2-CH(CH_3)-COOH}\)
  10. \(\mathrm{CH_3-CH(CH_3)-CH_2-COOH}\)
  11. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH_2-COOH}\)
  12. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH_2-COOH}\)
  13. \(\mathrm{CH_3-CH(CH_3)-CH(CH_3)-COOH}\)
  14. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH(CH_3)-COOH}\)
  15. \(\mathrm{CH_3-CH_2-CH_2-CH(CH_3)-COOH}\)
  16. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH(CH_3)-COOH}\)
  17. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH_2-CH_2-COOH}\)
  18. \(\mathrm{CH_3-CH(CH_3)-CH(CH_3)-CH_2-COOH}\)
  19. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH(CH_3)-CH_2-COOH}\)
  20. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH_2-CH(CH_3)-COOH}\)
Answers:
  1. Methanoic acid
  2. Ethanoic acid
  3. Propanoic acid
  4. Butanoic acid
  5. Pentanoic acid
  6. Hexanoic acid
  7. Heptanoic acid
  8. 2-Methylpropanoic acid
  9. 2-Methylbutanoic acid
  10. 3-Methylbutanoic acid
  11. 2-Methylpentanoic acid
  12. 4-Methylpentanoic acid
  13. 2,3-Dimethylbutanoic acid
  14. 2,3-Dimethylpentanoic acid
  15. 2-Methylpentanoic acid
  16. 2,4-Dimethylpentanoic acid
  17. 3-Methylhexanoic acid
  18. 2,3-Dimethylpentanoic acid
  19. 2,3-Dimethylhexanoic acid
  20. 2,5-Dimethylhexanoic acid

Set 7 – Branched Hydrocarbons

  1. \(\mathrm{CH_3-CH(CH_3)-CH_3}\)
  2. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH_3}\)
  3. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH_2-CH_3}\)
  4. \(\mathrm{CH_3-C(CH_3)_2-CH_3}\)
  5. \(\mathrm{CH_3-CH(CH_3)-CH(CH_3)-CH_3}\)
  6. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH_2-CH_2-CH_3}\)
  7. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH_2-CH_3}\)
  8. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH(CH_3)-CH_3}\)
  9. \(\mathrm{CH_3-C(CH_3)_2-CH_2-CH_3}\)
  10. \(\mathrm{CH_3-CH(CH_3)-CH(CH_3)-CH_2-CH_3}\)
  11. \(\mathrm{CH_3-CH_2-C(CH_3)_2-CH_2-CH_3}\)
  12. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH(CH_3)-CH_3}\)
  13. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH_2-CH(CH_3)-CH_3}\)
  14. \(\mathrm{CH_3-C(CH_3)_2-CH_2-CH(CH_3)-CH_3}\)
  15. \(\mathrm{CH_3-CH(CH_3)-C(CH_3)_2-CH_3}\)
  16. \(\mathrm{CH_3-CH_2-CH(CH_3)-CH(CH_3)-CH_2-CH_3}\)
  17. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH(CH_3)-CH_2-CH_3}\)
  18. \(\mathrm{CH_3-CH_2-C(CH_3)_2-CH_2-CH_3}\)
  19. \(\mathrm{CH_3-CH(CH_3)-CH(CH_3)-CH(CH_3)-CH_3}\)
  20. \(\mathrm{CH_3-C(CH_3)_2-CH_2-C(CH_3)_2-CH_3}\)
Answers:
  1. 2-Methylpropane
  2. 2-Methylbutane
  3. 3-Methylpentane
  4. 2,2-Dimethylpropane
  5. 2,3-Dimethylbutane
  6. 3-Methylhexane
  7. 2-Methylpentane
  8. 2,3-Dimethylpentane
  9. 2,2-Dimethylbutane
  10. 2,3-Dimethylpentane
  11. 3,3-Dimethylpentane
  12. 2,4-Dimethylpentane
  13. 2,4-Dimethylhexane
  14. 2,2,4-Trimethylpentane
  15. 2,2,3-Trimethylbutane
  16. 3,4-Dimethylhexane
  17. 2,4-Dimethylhexane
  18. 3,3-Dimethylpentane
  19. 2,3,4-Trimethylpentane
  20. 2,2,4,4-Tetramethylpentane

Set 8 – Mixed Compounds

  1. \(\mathrm{CH_3-CH_2-OH}\)
  2. \(\mathrm{CH_3-CH(OH)-CH_3}\)
  3. \(\mathrm{CH_3-CHO}\)
  4. \(\mathrm{CH_3-CH_2-CHO}\)
  5. \(\mathrm{CH_3-CO-CH_3}\)
  6. \(\mathrm{CH_3-CO-CH_2-CH_3}\)
  7. \(\mathrm{CH_3-COOH}\)
  8. \(\mathrm{CH_3-CH_2-COOH}\)
  9. \(\mathrm{CH_2=CH-CH_3}\)
  10. \(\mathrm{CH_3-CH=CH-CH_3}\)
  11. \(\mathrm{CH\equiv C-CH_3}\)
  12. \(\mathrm{CH_3-C\equiv C-CH_3}\)
  13. \(\mathrm{CH_3-CH(CH_3)-CH_3}\)
  14. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH_3}\)
  15. \(\mathrm{CH_3-CH(OH)-CH_2-CH_3}\)
  16. \(\mathrm{CH_3-CH_2-CH(CH_3)-OH}\)
  17. \(\mathrm{CH_3-CH(CH_3)-CHO}\)
  18. \(\mathrm{CH_3-CH(CH_3)-COOH}\)
  19. \(\mathrm{CH_3-CH(CH_3)-CH_2-OH}\)
  20. \(\mathrm{CH_3-CH_2-CO-CH_2-CH_3}\)
Answers:
  1. Ethanol
  2. Propan-2-ol
  3. Ethanal
  4. Propanal
  5. Propanone
  6. Butan-2-one
  7. Ethanoic acid
  8. Propanoic acid
  9. Propene
  10. But-2-ene
  11. Propyne
  12. But-2-yne
  13. 2-Methylpropane
  14. 2-Methylbutane
  15. Butan-2-ol
  16. Butan-2-ol
  17. 2-Methylpropanal
  18. 2-Methylpropanoic acid
  19. 2-Methylpropan-1-ol
  20. Pentan-3-one

Set 9 – Higher Practice

  1. \(\mathrm{CH_2=CH-CH(CH_3)-CH_3}\)
  2. \(\mathrm{CH_3-CH=CH-CH(CH_3)-CH_3}\)
  3. \(\mathrm{CH\equiv C-CH(CH_3)-CH_3}\)
  4. \(\mathrm{CH_3-C\equiv C-CH(CH_3)-CH_3}\)
  5. \(\mathrm{CH_3-CH(OH)-CH(CH_3)-CH_3}\)
  6. \(\mathrm{CH_3-CH_2-CH(OH)-CH(CH_3)-CH_3}\)
  7. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH_2-OH}\)
  8. \(\mathrm{CH_3-CH(OH)-CH_2-CH(CH_3)-CH_3}\)
  9. \(\mathrm{CH_3-CH(CH_3)-CHO}\)
  10. \(\mathrm{CH_3-CH_2-CH(CH_3)-CHO}\)
  11. \(\mathrm{CH_3-CH(CH_3)-CO-CH_3}\)
  12. \(\mathrm{CH_3-CO-CH_2-CH(CH_3)-CH_3}\)
  13. \(\mathrm{CH_3-CH(CH_3)-CO-CH_2-CH_3}\)
  14. \(\mathrm{CH_3-CH(CH_3)-COOH}\)
  15. \(\mathrm{CH_3-CH_2-CH(CH_3)-COOH}\)
  16. \(\mathrm{CH_3-CH(CH_3)-CH(CH_3)-CH_3}\)
  17. \(\mathrm{CH_3-C(CH_3)_2-CH_2-CH_3}\)
  18. \(\mathrm{CH_3-CH(CH_3)-CH_2-CH(CH_3)-CH_3}\)
  19. \(\mathrm{CH_3-CH=CH-CH(CH_3)-CH_3}\)
  20. \(\mathrm{CH_3-CH(OH)-CH(CH_3)-CH_2-CH_3}\)
Answers:
  1. 3-Methylbut-1-ene
  2. 4-Methylpent-2-ene
  3. 3-Methylbut-1-yne
  4. 4-Methylpent-2-yne
  5. 3-Methylbutan-2-ol
  6. 2-Methylpentan-3-ol
  7. 3-Methylbutan-1-ol
  8. 4-Methylpentan-2-ol
  9. 2-Methylpropanal
  10. 2-Methylbutanal
  11. 3-Methylbutan-2-one
  12. 4-Methylpentan-2-one
  13. 2-Methylpentan-3-one
  14. 2-Methylpropanoic acid
  15. 2-Methylbutanoic acid
  16. 2,3-Dimethylbutane
  17. 2,2-Dimethylbutane
  18. 2,4-Dimethylpentane
  19. 4-Methylpent-2-ene
  20. 3-Methylpentan-2-ol

Set 10 – Board-Level Challenge

  1. \[ \mathrm{CH_3-CH_2-CH(CH_3)-CH_2-CH_3} \]
  2. \[ \mathrm{CH_3-CH(CH_3)-CH_2-CH(CH_3)-CH_3} \]
  3. \[ \mathrm{CH_2=CH-CH(CH_3)-CH_2-CH_3} \]
  4. \[ \mathrm{CH_3-CH=CH-CH(CH_3)-CH_3} \]
  5. \[ \mathrm{CH\equiv C-CH(CH_3)-CH_2-CH_3} \]
  6. \[ \mathrm{CH_3-C\equiv C-CH(CH_3)-CH_3} \]
  7. \[ \mathrm{CH_3-CH(OH)-CH_2-CH(CH_3)-CH_3} \]
  8. \[ \mathrm{CH_3-CH(CH_3)-CH_2-CH_2-OH} \]
  9. \[ \mathrm{CH_3-CH_2-CH(OH)-CH(CH_3)-CH_3} \]
  10. \[ \mathrm{CH_3-CH(CH_3)-CHO} \]
  11. \[ \mathrm{CH_3-CH_2-CH(CH_3)-CHO} \]
  12. \[ \mathrm{CH_3-CO-CH(CH_3)-CH_3} \]
  13. \[ \mathrm{CH_3-CO-CH_2-CH(CH_3)-CH_3} \]
  14. \[ \mathrm{CH_3-CH(CH_3)-COOH} \]
  15. \[ \mathrm{CH_3-CH_2-CH(CH_3)-COOH} \]
  16. \[ \mathrm{CH_3-CH(CH_3)-CH(CH_3)-CH_3} \]
  17. \[ \mathrm{CH_3-C(CH_3)_2-CH_2-CH_3} \]
  18. \[ \mathrm{CH_3-CH=CH-CH(CH_3)-CH_3} \]
  19. \[ \mathrm{CH_3-CH_2-CO-CH(CH_3)-CH_2-CH_3} \]
  20. \[ \mathrm{CH_3-CH(OH)-CH(CH_3)-CH_2-CH_3} \]
Answers:
  1. 3-Methylpentane
  2. 2,4-Dimethylpentane
  3. 3-Methylpent-1-ene
  4. 4-Methylpent-2-ene
  5. 3-Methylpent-1-yne
  6. 4-Methylpent-2-yne
  7. 4-Methylpentan-2-ol
  8. 3-Methylbutan-1-ol
  9. 2-Methylpentan-3-ol
  10. 2-Methylpropanal
  11. 2-Methylbutanal
  12. 3-Methylbutan-2-one
  13. 4-Methylpentan-2-one
  14. 2-Methylpropanoic acid
  15. 2-Methylbutanoic acid
  16. 2,3-Dimethylbutane
  17. 2,2-Dimethylbutane
  18. 4-Methylpent-2-ene
  19. 4-Methylhexan-3-one
  20. 3-Methylpentan-2-ol

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