JAMB and WAEC Chemistry questions: Organic compounds

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

1. Question 61· Organic compounds· WAEC

   Isomers have the same

   • Aphysical properties
   • Bstructure
   • Cboiling point always
   • Dmolecular formula but different structures

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   Explanation and discussion

2. Question 62· Organic compounds· JAMB

   Nylon is formed by

   • Acracking
   • Baddition polymerisation
   • Cfermentation
   • Dcondensation polymerisation

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   Explanation and discussion

3. Question 63· Organic compounds· JAMB

   Which of the following polymers is made by condensation polymerisation?

   • Apolythene
   • Bnylon
   • Cpolyvinyl chloride
   • Dpolystyrene

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   Explanation and discussion

4. Question 64· Organic compounds· WAEC

   Alkenes decolourise bromine water because they

   • Aundergo addition reactions
   • Bare saturated
   • Cundergo substitution
   • Dare acidic

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   Explanation and discussion

5. Question 65· Organic compounds· JAMB

   The IUPAC name of CH₃CH₂CH₂OH is

   • Apropanoic acid
   • Bpropan-2-ol
   • Cpropanal
   • Dpropan-1-ol

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6. Question 66· Organic compounds· WAEC

   Cracking of long-chain hydrocarbons produces

   • Aproteins
   • Bshorter alkanes and alkenes
   • Csoaps
   • Desters

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   Explanation and discussion

7. Question 67· Organic compounds· WAEC

   The IUPAC name of CH₃CH₂OH is

   • Aethanol
   • Bmethanol
   • Cethanoic acid
   • Dethane

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   Explanation and discussion

8. Question 68· Organic compounds· JAMB

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

   • Ahydrogen
   • Boxygen
   • Ccarbon(IV) oxide
   • Dethene

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   Explanation and discussion

9. Question 69· Organic compounds· JAMB

   The fermentation of glucose produces

   • Aethene
   • Bmethanol
   • Cethanoic acid
   • Dethanol and carbon(IV) oxide

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   Explanation and discussion

10. Question 70· Organic compounds· WAEC

    The usual laboratory test for unsaturation in an organic compound uses

    • Abromine water
    • Blime water
    • Ciodine solution
    • Dsilver nitrate solution

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    Explanation and discussion

11. Question 71· Organic compounds· JAMB

    Cracking is the process of

    • Ajoining small molecules into polymers
    • Bbreaking long-chain hydrocarbons into shorter, more useful ones
    • Cseparating crude oil by boiling point
    • Dadding hydrogen to oils

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12. Question 72· Organic compounds· JAMB

    Ethene decolourises bromine water because it is:

    • Asaturated
    • Bunsaturated
    • Can alcohol
    • Daromatic

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    Explanation and discussion