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Chemistry JAMB Past Questions

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721

A sample of temporary hard water can be prepared in the laboratory by?

  • A. disolving calcium chloride in distilled water
  • B. saturating lime water with carbon (IV) oxide
  • C. saturating distilled water with calcium hydroxide
  • D. dissolving sodium hydrogen trioxocarbonate (IV) in some distilled water
View Answer & Discuss (8) JAMB 1991
722
A property of a colloidal dispersion which a solution does not have is?
  • A. the Tyndall effect
  • B. homogeneity
  • C. osmotic pressure
  • D. surface polarity
View Answer & Discuss (5) JAMB 1991
723

50 cm\(^3\) of sulphur (IV) oxide, 800cm\(^3\) of ammonia, 450 cm\(^3\) of hydrogen chloride, 1.0 cm\(^3\)of Carbon(IV) oxide will respectively saturate 1.0 cm\(^3\) of water at 15°C. Which of the following is suitable for demonstrating the fountain experiment?

  • A. Sulphur (IV) oxide and hydrogen chloride
  • B. Carbon (IV) oxide and ammonia
  • C. Ammonia and hydrogen chloride
  • D. Carbon (IV) oxide and surphur (IV) oxide
View Answer & Discuss (6) JAMB 1991
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724
How many structural isomers can be written for the alkyl bromide, C4H9Br?
  • A. 3
  • B. 4
  • C. 6
  • D. 8
View Answer & Discuss (15) JAMB 1991
725
What volume of CO2 at s.t.p would be obtained by reacting trioxocarbonate (IV) with excess acid?

(G.M.V at s.t.p = 22.4 dm3)
  • A. 2.240 cm 3
  • B. 22.40 cm 3
  • C. 224.0 cm 3
  • D. 2240 cm 3
View Answer & Discuss (15) JAMB 1991
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