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Chemistry WAEC Past Questions

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1976

Which of the following is a monomer of polythene?

  • A. Ethanol
  • B. Vinyl chloride
  • C. Ethene
  • D. Ethane
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1977

Which of the following compounds is formed by the oxidation of ethanol?

  • A. C\(_2\)H\(_4\)CO\(_2\)H
  • B. C\(_2\)H\(_5\)OH
  • C. CH\(_3\)OH
  • D. CH\(_3\)CO\(_2\)H
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1978

Tetraoxosulphate (VI) acid is considered as a heavy chemical because

  • A. its relative molecular mass is high
  • B. a high tonnage is produced every year
  • C. it is an inorganic chemical
  • D. it is used to manufacture heavy chemicals
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1979

How many isomers can be formed from a compound with molecular formula C\(_5\)H\(_{12}\) ?

  • A. One
  • B. Two
  • C. Three
  • D. Four
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1980

The oxidation number of iron, in its free state is

  • A. 0
  • B. +1
  • C. +2
  • D. +3
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