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Chemistry Past Questions

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1966
Ammonia gas is suitable for performing the 'Fountain' experiment because the gas is
  • A. colourless
  • B. a cooling agent
  • C. alkaline to litmus
  • D. a reducing agent
  • E. very soluble in water
View Answer & Discuss (2) WAEC 1996
1967
Which of the following metals will be the most suitable for use where lightness and resistance to corrosion are of importance?
  • A. Lead
  • B. Copper
  • C. Iron
  • D. Calcium
  • E. Aluminium
View Answer & Discuss WAEC 1996
1968
What amount of copper is deposited when 13.0g of zinc reacts with excess copper (ll) tetraoxosulphate (IV) solution according to the following equation? Zn (s) + CuSO4(aq) → ZnSO4(aq) + Cu (s) [Cu =63,5, Zn = 65]
  • A. 0.1 mole
  • B. 0.2mole
  • C. 0.3 mole
  • D. 0.4 mole
  • E. 0.5 mole
View Answer & Discuss (2) WAEC 1996
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1969
The products formed when sodium hydrogen trioxocarbonate (IV) is heated strongly are
  • A. carbon (IV) oxide and sodium hydride
  • B. carbon (IV) oxide and soudium trioxocarbonate (IV)
  • C. sodium trioxocarbonate (IV) and steam
  • D. carbon (IV) oxide and steam
  • E. sodium trioxocarbonate (IV) carbon (IV) oxide and steam
View Answer & Discuss (1) WAEC 1996
1970
The following are properties of transition metals except
  • A. variable oxidation states
  • B. tendency to form complext ions
  • C. formation of coloured ions
  • D. ability to act as catalyst
  • E. low melting points
View Answer & Discuss WAEC 1996
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