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Chemistry WAEC Past Questions

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1881

The following steps are scientific methods except

  • A. experimentation
  • B. problem identification
  • C. Analysis
  • D. Open-mindedness
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1882

Alkenes can be manufactured by

  • A. the combustion of alkanes.
  • B. the cracking of hydrocarbons.
  • C. polymerization reactions.
  • D. addition of hydrogen to unsaturated vegetable oils.
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1883

The formation of a bond between hydrogen and a highly electronegative atom results in

  • A. polarity
  • B. electrovalent bond.
  • C. dipole
  • D. metallic bond
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1884

Which of the elements in the table below would react more readily with chlorine?
      

Element

Ionization energy (KJ \(mol^{-1} \times 10^{-3}\))

W 12.0
X 21.0
Y 106.0
Z 200.0

 

  • A. Y and Z only
  • B. X and Z only
  • C. W and X only
  • D. W and Z only
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1885

Which of the following properties does not give evidence of the kinetic theory of matter?

  • A. Diffusion
  • B. Melting
  • C. Polymerization
  • D. Evaporation
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