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Chemistry WAEC Past Questions

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16
Which of the following statements is not correct?
  • A. Carbon exhibits allotropy
  • B. Sulphur exhibits allotropy
  • C. Chlorine exhibits allotopy
  • D. Nitrogen is a gas
  • E. Argon is a noble gas
View Answer & Discuss (1) WAEC 1988
17

The following are uses of radioactive isotopes except for

  • A. sterilization of medical equipment
  • B. tracing reaction paths
  • C. dating elements
  • D. radiography
  • E. determining equilibrum positions
View Answer & Discuss (6) WAEC 1988
18
The main characteristic feature of transition metals is that they
  • A. have the same atomic size
  • B. are reducing agents
  • C. from ions easily
  • D. have variable oxidation states
  • E. are highly electropositive
View Answer & Discuss WAEC 1988
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19
The following are heavy chemicals except
  • A. tetraoxosulphate (IV) acid
  • B. caustic soda
  • C. sodium trioxocarbonate (IV)
  • D. ethene
  • E. dyes
View Answer & Discuss (4) WAEC 1988
20
What quantity of silver is deposited when 96500C of electricity is passed through a solution containing silver ions? (Ag = 108, 1F = 96500C)
  • A. 1.08g
  • B. 40g
  • C. 10,.8g
  • D. 21.6g
  • E. 108g
View Answer & Discuss (6) WAEC 1988
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