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Chemistry 1979 JAMB Past Questions

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46

Pick out the correct statement

  • A. Zinc heated to redness reacts with steam to give oxygen and zinc oxide
  • B. Zinc heated to redness reacts with steam to give oxygen and hydrogen
  • C. Zinc does not react with hot or cold water
  • D. Zinc reacts with hot water to form zinc oxide and hydrogen
  • E. Zinc reacts very easily with cold water to give zinc oxide and hydrogen
View Answer & Discuss (19) JAMB 1979
47

Consider the following exothermic reaction \(2SO_{2(g)} + O_{2(g)} = 2SO_{3(g)}\) . If the temperature of the reaction is reduced from 800ºC to 500ºC, and no other change takes place, then

  • A. the reaction rate increases
  • B. concentration of SO3 decreases
  • C. concentration of SO3 increases
  • D. SO2 gas becomes unreactive
  • E. O2 gas becomes unreactive
View Answer & Discuss (4) JAMB 1979
48

The IUPAC name for

  • A. 2-methylbut-3-ene
  • B. 2-methylbut-4-ene
  • C. 3-methylbut-2-ene
  • D. 3-methylbut-1-ene
  • E. 3-methylpent-1-ene
View Answer & Discuss (10) JAMB 1979
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49

Which of the structural formula above is ethanoic acid is

  • A. A
  • B. B
  • C. C
  • D. D
  • E. E
View Answer & Discuss (10) JAMB 1979
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