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Friday, 12 June 2026
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Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 326:
Which of the following is likely to have the highest degree of hardness?
  • A Carbonated water
  • B Distilled water
  • C Acidified water
  • D Rain water
  • E Lime water
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Question 327:
Study the reaction represented by the equation: Alkanol + Alkanoic acid conc. H2SO4 Alkanoate + water. The type of process involved in the reverse reaction is
  • A Neutralization
  • B Dehydration
  • C Hydrolysis
  • D Decomposition
  • E Hydrogenation
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Question 328:
Destructive distillation of coal means
  • A Heating coal in plentiful supply of air
  • B Burning coal in air to produce water and carbon (IV) oxide
  • C Heating coal in the absence of air
  • D Heating coal in limited supply of air
  • E Separating coal into various allotropes of carbon
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Question 329:
When magnesium ribbon burns in air, the products are
  • A Magnesium nitride and magnesium oxide
  • B Magnesium nitride and carbon (ll) oxide
  • C Magnesium oxide and steam
  • D Magnesium nitride and soot
  • E Magnesium oxide and carbon (ll) oxide
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Question 330:
The following compounds contain the same type of bonds except
  • A Sodium chloride
  • B Hydrogen chloride
  • C Magnesium chloride
  • D Potassium chloride
  • E Lithium chloride
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