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Chemistry Past Questions

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1896
The gaseous product formed when ammonia is passed over heated copper (ll) oxide is
  • A. oxygen
  • B. nitrogen
  • C. hydrogen
  • D. nitrogen (l) oxide
  • E. nitrogen (ll) oxide
View Answer & Discuss WAEC 1994
1897
Which of the following is not a halogen?
  • A. Silicon
  • B. Fluorine
  • C. Astatine
  • D. Bromine
  • E. lodine
View Answer & Discuss WAEC 1994
1898

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
View Answer & Discuss (9) WAEC 1994
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1899

Study the reaction represented by the equation: Alkanol + Alkanoic acid + conc. H\(_2\)SO\(_4\) →  Alkanoate + water.  The type of process involved in the reverse reaction is

  • A. Neutralization
  • B. dehydration
  • C. hydrolysis
  • D. decomposition
  • E. hydrogenation
View Answer & Discuss (4) WAEC 1994
1900
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
View Answer & Discuss WAEC 1994
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