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Chemistry 1979 JAMB Past Questions

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1
An organic compound X has the following properties: I. It is not miscible with water. ll. lt has boiling point of 77oC lll. lt has a sweet odour lV. lt is insoluble in sodium hydrogen carbonate solution . V lt does not decolourize bromine water X is therefore
  • A. methane
  • B. ethanoic acid
  • C. ethene
  • D. ethyl ethanoate
  • E. carbon tetrachloride
View Answer & Discuss (17) JAMB 1979
2

Which are the correct IUPAC names for H-CO\(_2\)CH\(_3\) and CH \(\equiv\) CH

  • A. Methyl methanoate and ethene
  • B. Metanoic acid and ethyne
  • C. Ethyl methanoate and ethyne
  • D. Methyl methanoate and ethyne
  • E. Ethanoic acid and ethene
View Answer & Discuss (20) JAMB 1979
3
Which of the following substances are all made by the process of polymerization?
  • A. Nylon and soap
  • B. Ethanoic acid margarine and ethanol
  • C. Nylon and artificial rubber
  • D. Soap and butane
  • E. Margarine and nylon
View Answer & Discuss (6) JAMB 1979
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4
The reaction of zinc with copper (ll) ions in aqueous solution can be represented as follows: Cu 2+(aq) +Zn (s) → Cu(s) + Zn 2+(aq).Which of the following is the most complete description of this reaction?
  • A. Cpper (ll) ions are being reduced
  • B. Zinc is being oxidized.
  • C. Copper (ll) ions and zinc are being reduced
  • D. copper (ll) ions and zinc are being oxidized
  • E. copper(ll) ions are being reduced and zinc oxidized
View Answer & Discuss (10) JAMB 1979
5
The oxidation state of manganese in potassium permanganate is
  • A. +7
  • B. +5
  • C. +3
  • D. +2
  • E. +1
View Answer & Discuss (4) JAMB 1979
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