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Chemistry 1991 WAEC Past Questions

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11
The products of the electrolysis of dilute sodium chlorid solution with platinum electrodes are
  • A. hydrogen and oxygen
  • B. oxygen and chlorine
  • C. chlorine and water
  • D. sodium amalgam and chlorine
  • E. sodium hydroxide and water
View Answer & Discuss (2) WAEC 1991
12

Which of the following modes of motion is exhibited by the particles of a solid?

  • A. Vibrational and random motion
  • B. Vibrational and translational motion
  • C. Translational and random motion
  • D. Vibrational motion only
  • E. Translational motion only
View Answer & Discuss (8) WAEC 1991
13
Which of the following statements is not correct? Group 7 elements
  • A. are diatomic
  • B. are good oxidizing agents
  • C. are highly electronegative
  • D. have relatively low ionization potentials
  • E. have high electron affinity
View Answer & Discuss WAEC 1991
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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14
In which of the following are the substances arranged in their correct order of increasing melting point?
  • A. Sodium chloride, sulphur, diamond
  • B. Diamond, sodium chloride, sulphur
  • C. Sulphur, sodium chloride, diamond
  • D. Diamond, sulphur, sodium chloride
  • E. Sulphur, diamond, sodium chloride
View Answer & Discuss WAEC 1991
15
A compound which liberates carbon (IV) oxide from a hydrogentrioxocarbonate (lV) could have the molecular formula
  • A. C2H5OH
  • B. C 3H 4
  • C. HCOOH
  • D. H2O2
  • E. C6H6
View Answer & Discuss (2) WAEC 1991
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