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Chemistry 1984 JAMB Past Questions

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31
Sodium hydroxide (NaOH) pellets are
  • A. deliquescent
  • B. hygroscopic
  • C. efflorescent
  • D. hydrated
  • E. fluorescent
View Answer & Discuss (1) JAMB 1984
32
Alkanes
  • A. are all gases
  • B. have the general formula CnH2n + 2O
  • C. contain only carbon and hydrogen
  • D. are usually soluble in water
  • E. are usually active compounds
View Answer & Discuss (4) JAMB 1984
33

If an excess of a liquid hydrocarbon is poured into a jar of chlorine, and the sealed jar is then exposed for several hours to bring sunlight, all the chlorine gas is consumed. The hydrocarbon is said to have undergone

  • A. a polymerization reaction
  • B. an isomerization reaction
  • C. an addition reaction
  • D. a substitution reaction
  • E. a reduction reaction
View Answer & Discuss (2) JAMB 1984
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34
The function of conc. H2SO4 in the esterification of ethanoic acid with ethanol is to
  • A. serve as a dehydrating agent
  • B. serve as a solvent
  • C. act as a catalyst
  • D. prevent any side reaction
  • E. serve as an oxidizing agent
View Answer & Discuss (13) JAMB 1984
35
A piece of sea shell, when dropped into a dilute solution of hydrochloric acid, produces a colourless, odourless gas which turns clear limewater milky. The sea shell contains
  • A. sodium chloride
  • B. ammonium nitrate
  • C. calcium carbonate
  • D. calcium chloride
  • E. magnesium chloride
View Answer & Discuss (6) JAMB 1984
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