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Chemistry WAEC Past Questions

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576
A nuclide emits a beta-particle (e) in the process, that atomic number
  • A. increases by 1 while the mass numer remains constant
  • B. decreases by 2 while the mass number remains constant
  • C. remains constant while the mass number decreases by 2
  • D. remains constant while the mass number increases by 1
View Answer & Discuss (2) WAEC 2004
577
One of the characteristics of transition metals is
  • A. reducing ability
  • B. ductility
  • C. ability to conduct electricity
  • D. formation of coloured ions
View Answer & Discuss WAEC 2004
578
A metal X forms two chlorides with the formulae XCI2 and XCI3. Where is X in the Periodic Table?
  • A. Group ll
  • B. Group llI
  • C. d-block
  • D. s-block
View Answer & Discuss (6) WAEC 2004
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579
A metal X forms two chlorides with the formulae XCI2 and XCI3. Where is X in the Periodic Table?
What type of bonding exists between X and chlorine in each of the chlorides?
  • A. metallic bonding
  • B. ionic bonding
  • C. covalent bonding
  • D. dative bonding
View Answer & Discuss (2) WAEC 2004
580
Which of the following equipment is not used to detect radioactivity?
  • A. Wilson cloud chamber
  • B. Geiger- muller counter
  • C. Mass spectrometer
  • D. Photographic plate
View Answer & Discuss (1) WAEC 2004
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