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Chemistry 1994 JAMB Past Questions

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31
SO3 is NOT directly dissolved in water in the preparation of H2SO4 by the contact process because?
  • A. the reaction between SO3 and water is violently exothermic
  • B. acid is usually added to water and never water to acid
  • C. SO3 does not dissolve in water readily
  • D. SO3 is an acid gas
View Answer & Discuss (1) JAMB 1994
32

In an electrolytic set-up to protect iron from corrosion, the iron is?

  • A. made cathode
  • B. made anode
  • C. used with a metal of lower electropositive potential
  • D. initially coated with tin
View Answer & Discuss (10) JAMB 1994
33
Which of the following is NOT true of metals?
  • A. They are good conductors of electricity
  • B. They ionize by electron loss
  • C. Their oxides are acidic
  • D. They have high melting points
View Answer & Discuss (2) JAMB 1994
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34

Which of the following is the correct order of decreasing activity of the metals Fe, Ca, Al and Na?

  • A. Fe> Ca> Al> Na
  • B. Na> Ca> Al> Fe
  • C. Al> Fe> Na> Ca
  • D. Ca> Na> Fe>, Al
View Answer & Discuss (5) JAMB 1994
35
Which of the following compounds is NOT an isomers of 2,2 dimethylbutane?
  • A. 2-methylbutane
  • B. 3-methylpentane
  • C. 2,3-dimethylbutane
  • D. 2-methylpentane
View Answer & Discuss (3) JAMB 1994
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