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Chemistry 1993 JAMB Past Questions

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6
Two atoms represented as U and U are?
  • A. isomers
  • B. allotropes
  • C. isotopes
  • D. anomers
View Answer & Discuss (6) JAMB 1993
7
As the difference in electronegativity between bonded atoms increases, polarity of the bond?
  • A. decreases
  • B. increases
  • C. remains unchanged
  • D. reduces to zero
View Answer & Discuss (2) JAMB 1993
8

Which group of elements forms hydrides that are pyramidal in structure?

  • A. III
  • B. IV
  • C. V
  • D. VI
View Answer & Discuss (13) JAMB 1993
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9
Water has a rather high boiling point despite its low molecular mass because of the presence of?
  • A. hydrogen bonding
  • B. covalent bonding
  • C. ionic bonding
  • D. metallic bonding
View Answer & Discuss (2) JAMB 1993
10

Argon is used in gas-filled electric lamp because it helps to?

  • A. prevent the reduction of the lamp fillaments
  • B. prevent oxidation of the lamp fillaments
  • C. make the lamp fillament glow brightly
  • D. keep the atmosphere in the lamp inert
View Answer & Discuss (9) JAMB 1993
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