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JAMB Chemistry questions: Organic compounds

43 questions with answers and explanations. Tap an option to check yourself.

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All topicsAcids, bases and salts · 32Air · 21Atomic structure and bonding · 33Chemical combination · 31Chemical equilibrium · 21Chemistry and industry · 18Electrolysis · 22Energy changes · 22Environmental pollution · 17Kinetic theory of matter and gas laws · 27Metals and their compounds · 24Non-metals and their compounds · 23Organic compounds · 43Oxidation and reduction · 22Rates of chemical reaction · 22Separation of mixtures and purification · 24Solubility · 20Water · 21

  1. Question 21· Organic compounds· JAMB

    A hydrocarbon contains 85.7% carbon and 14.3% hydrogen by mass. Find its empirical formula. (C = 12, H = 1)

    Explanation and discussion

  2. Question 22· Organic compounds· JAMB

    The ester formed when ethanoic acid reacts with ethanol is

    Explanation and discussion

  3. Question 23· Organic compounds· JAMB

    But-2-ene shows geometrical (cis-trans) isomerism because

    Explanation and discussion

  4. Question 24· Organic compounds· JAMB

    The molecular formula of benzene is

    Explanation and discussion

  5. Question 25· Organic compounds· JAMB

    In the laboratory, methane is prepared by heating sodium ethanoate with

    Explanation and discussion

  6. Question 26· Organic compounds· JAMB

    Structural isomers have

    Explanation and discussion

  7. Question 27· Organic compounds· JAMB

    The reaction between an alkanoic acid and an alkanol to form an ester is catalysed by

    Explanation and discussion

  8. Question 28· Organic compounds· JAMB

    The IUPAC name of CH₃CH(CH₃)CH₃ is

    Explanation and discussion

  9. Question 29· Organic compounds· JAMB

    The monomer of polyvinyl chloride (PVC) is

    Explanation and discussion

  10. Question 30· Organic compounds· JAMB

    In the laboratory, ethyne is prepared by adding water to

    Explanation and discussion

  11. Question 31· Organic compounds· JAMB

    The conversion of ethene into polythene is an example of

    Explanation and discussion

  12. Question 32· Organic compounds· JAMB

    The general formula of alkanes is:

    Explanation and discussion

  13. Question 33· Organic compounds· JAMB

    Ethanol warmed with excess acidified potassium heptaoxodichromate(VI) is oxidised to

    Explanation and discussion

  14. Question 34· Organic compounds· JAMB

    The functional group of the alkenes is

    Explanation and discussion

  15. Question 35· Organic compounds· JAMB

    Ethyne (acetylene) is used in

    Explanation and discussion

  16. Question 36· Organic compounds· JAMB

    The homologous series with the general formula CₙH₂ₙ₋₂ is the

    Explanation and discussion

  17. Question 37· Organic compounds· JAMB

    Nylon is formed by

    Explanation and discussion

  18. Question 38· Organic compounds· JAMB

    Which of the following polymers is made by condensation polymerisation?

    Explanation and discussion

  19. Question 39· Organic compounds· JAMB

    The IUPAC name of CH₃CH₂CH₂OH is

    Explanation and discussion

  20. Question 40· Organic compounds· JAMB

    When sodium is added to ethanol, the gas given off is

    Explanation and discussion

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