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Chemistry 1988 WAEC Past Questions

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16

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 (5) WAEC 1988
17
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
18
The following are heavy chemicals except
  • A. tetraoxosulphate (IV) acid
  • B. caustic soda
  • C. sodium trioxocarbonate (IV)
  • D. ethene
  • E. dyes
View Answer & Discuss (1) WAEC 1988
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19
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 (5) WAEC 1988
20
Bubbling of carbon (IV)oxide into calcium hydroxide solution results in the formation of
  • A. CaCO3
  • B. CuCO3
  • C. ZnCO,sub>3
  • D. Na2CO3
  • E. MgCO3
View Answer & Discuss (2) WAEC 1988
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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