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Chemistry WAEC Past Questions

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1836

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\(_{4}\)
View Answer & Discuss (12) WAEC 2022
1837

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.
View Answer & Discuss (6) WAEC 2022
1838

Determine the quantity of electricity used when a current of 0.20 amperes is passed through an electrolytic cell for 60 minutes.

  • A. 12C
  • B. 120C
  • C. 360C
  • D. 720C
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1839

Oxochlorate(I) acid is used as a bleaching agent because it is

  • A. a weak acid
  • B. a reducing agent.
  • C. an oxidizing agent
  • D. a strong acid.
View Answer & Discuss (1) WAEC 2022
1840

The IUPAC name for CH\(_{3}\)CHCH\(_{3}\)CHCLCHCH\(_{3}\)CH\(_{2}\)CH\(_{3}\) is

  • A. 2, 4 - dimethyl - 3 - chlorohexane
  • B. 3, 5 - dimethyl - 4 - chlorohexane
  • C. 4 - chloro - 3, 5 - dirnethylhexane
  • D. 3 - chloro - 2, 4 - dimethylhexane
View Answer & Discuss (4) WAEC 2022
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