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Chemistry WAEC Past Questions

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1616

When an ionic bond is broken, bonding electrons are

  • A. shared between participating atoms
  • B. gained by the most electropositive atom
  • C. gained by the most electronegative atom
  • D. lost by both participating atoms.
View Answer & Discuss (7) WAEC 2020
1617

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

  • A. +1
  • B. +3
  • C. +5
  • D. +6
View Answer & Discuss (3) WAEC 2020
1618

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
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1619

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
1620

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
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