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3866

The oxidation state of chlorine in NaClO\(_3\) is?

  • A. +1
  • B. +3
  • C. +5
  • D. +6
View Answer & Discuss (3) WAEC 2020
3867

A balanced chemical equation is based on the law of?

  • A. Periodicity
  • B. Constant composition
  • C. Multiple proportion
  • D. Conservation of mass
View Answer & Discuss WAEC 2020
3868

Which of the following pairs of elements has the greatest difference in electronegativity?

  • A. Na and F
  • B. Na and CI
  • C. Na and Br
  • D. Na and I
View Answer & Discuss WAEC 2020
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3869

A factor that is considered most important when siting a chemical industry is?

  • A. nearness to other industrial establishments
  • B. nearness to raw materials
  • C. favourable climate conditions
  • D. availability of storage facilities
View Answer & Discuss (1) WAEC 2020
3870

The boiling point of pentane is higher than that of propane because?

  • A. carbon-carbon single bonds are stronger than carbon-hydrogen bonds.
  • B. Pentane has more covalent bonds to break
  • C. Pentane does not burn easily as propane
  • D. The intermolecular forces in pentane are stronger than those of propane
View Answer & Discuss (1) WAEC 2020
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