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Chemistry WAEC Past Questions

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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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131
A current of 4.0 amperes was passed through copper (ll) tetraoxosulphate (IV) solution for one hour using copper electrodes. What was the mass of copper deposited? (Cu = 64, 1F = 96500 C)
  • A. 3.2g
  • B. 4.8g
  • C. 6.4g
  • D. 48g
  • E. 96g
View Answer & Discuss (4) WAEC 1991
132
When a crystal was added to its solution, it did not dissolve and the solution remained unchanged, showing that the solution was
  • A. concentrated
  • B. supersaturated
  • C. unsaturated
  • D. colloidal
  • E. saturated
View Answer & Discuss (7) WAEC 1991
133

An organic compound which reacts readily with bromine to form a compound with the formula CH3CHBrCH2Br is

  • A. ethene
  • B. propane
  • C. butane
  • D. propene
  • E. propyne
View Answer & Discuss (10) WAEC 1991
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134
river contaminated by alkali waste will have a pH of about.
  • A. 1
  • B. 3
  • C. 5
  • D. 7
  • E. 9
View Answer & Discuss (2) WAEC 1991
135
In solution, aminoethanoic acid (glycine) can be represented as NH+3 CH2COO. This implies that it
  • A. is soluble in all inorganic liquids
  • B. can function as a weak acid or a weak base
  • C. does not form salt with mineral acids
  • D. is highly acidic
  • E. cannot form esters with alkanols
View Answer & Discuss WAEC 1991
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts