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Chemistry Past Questions

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2056

The crystal layers in graphite are held together by

  • A. electrostatic forces
  • B. van der Waals' forces
  • C. hydrogen bonds
  • D. covalent bonds
View Answer & Discuss (9) WAEC 1999
2057
Which of the following compounds has the highest ionic character?
  • A. PCI5
  • B. SiCI4
  • C. AICI3
  • D. KCI
View Answer & Discuss (5) WAEC 1999
2058
If an element with high electron affinity combines with another element with low ionization energy the bond formed will be mainly
  • A. covalent
  • B. ionic
  • C. dative
  • D. metallic
View Answer & Discuss (1) WAEC 1999
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2059
One mole of a compound M(HCO3)2 has a mass of 162g. Calculate the relative atomic mass of M. [H = 1, C =12, O = 16]
  • A. 122
  • B. 101
  • C. 53
  • D. 40
View Answer & Discuss WAEC 1999
2060
Exhaust fumes discharged from a smoky vehicle gradually become invisible as a result of
  • A. diffusion
  • B. combustion
  • C. absorption
  • D. emission
View Answer & Discuss WAEC 1999
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