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Chemistry 2022 WAEC Past Questions

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11

Which of the following compounds would react rapidly with bromine?

  • A. Benzene
  • B. Hexane
  • C. Hexene
  • D. Hexanol
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12

Alkanols can be manufactured from alkenes by the initial reaction of alkenes with

  • A. bromine in tetrachloromethane
  • B. concentrated tetraoxosulphate(VI) acid
  • C. aqueous potassium tetraoxomanganate(VII).
  • D. sodium hydroxide solution.
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13

Which of the following statements about the standard hydrogen electrode is not correct?

  • A. The hydrogen gas is at a pressure of 1 atmosphere
  • B. A solution containing 1 mol dm-3 of H+ (aq) ions is used
  • C. A platinum electrode is used
  • D. The temperature is kept at 20 °C
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14

If 60 g of M combines with 24 g of oxygen, what would the empirical formula of the oxide be?

( molar mass of M = 120, O = 16)

  • A. MO
  • B. MO\(_{2}\)
  • C. MO\(_{3}\)
  • D. MO\(_{4}\)
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15

The products of the electrolysis of dilute sodium chloride using carbon electrodes are

Anode Cathode

  • A. chlorine and sodium.
  • B. oxygen and hydrogen.
  • C. chlorine and hydrogen.
  • D. hydrogen and oxygen.
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