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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
1806
The reactions ethyne are mainly
  • A. substitution reactions
  • B. addition reactions
  • C. addition polymerization
  • D. catalytic hydrogenation
  • E. catalytic halogenation
View Answer & Discuss (2) WAEC 1992
1807
When air is passed through potash and then pyrogallol, the components are noble gases,
  • A. oxygen and carbon (IV) oxide
  • B. oxygen and nitrogen
  • C. nitrogen and water vapour
  • D. water vapour and carbon (IV) oxide
  • E. oxygen and water vapour
View Answer & Discuss (1) WAEC 1992
1808
The halide used widely in photography is
  • A. ammonium chloride
  • B. calcum chloride
  • C. silver bromide
  • D. sodium brmide
  • E. aluminium fluroide
View Answer & Discuss WAEC 1992
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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1809
The scum formed when soap is mixed with hard water could be
  • A. calcium trioxocarbonate (IV)
  • B. propane- 1, 2, 3 - triol
  • C. calcium hydrogentrioxocarbonate (IV)
  • D. magnesium tetraoxosulphate (IV)
  • E. calcium stearate
View Answer & Discuss (4) WAEC 1992
1810

What is the quantity of electricity produced when a current of 0.5A is passed for 5 hours 45 mins? (1F = 96500C)

  • A. 0. 11F
  • B. 0.12F
  • C. 0.22F
  • D. 1.1F
  • E. 2.2F
View Answer & Discuss (4) WAEC 1992
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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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