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Chemistry 1991 JAMB Past Questions

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46

The electrons of two atoms Y and Z are arranged in shells as shown above. The bond formed between the atoms of Y and Z is

  • A. ionic
  • B. covalent
  • C. dative
  • D. metallic
View Answer & Discuss (8) JAMB 1991
47
50 cm3 of sulphur (lV) oxide, 800 cm3 of carbon (IV) oxide will respectively saturate 1.0cm3 of water at 15oC. 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 Sulphur (IV) oxide
View Answer & Discuss (3) JAMB 1991
48
The data in the table above shows the rate of reaction of nitrogen (ll) oxide with chlorine at 25oC It can be concluded that doubling the initial concentration of NO increase the rate of reaction by a factor of
  • A. two
  • B. three
  • C. four
  • D. five
View Answer & Discuss (6) JAMB 1991
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49

The appropriate test paper to use in the above experiment is moist

  • A. litmus psper
  • B. potassium heptaoxodichromate (IV) paper
  • C. lead (ll) trioxonitrate (V) paper
  • D. universal indicator paper
View Answer & Discuss (15) JAMB 1991
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