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Chemistry 2009 WAEC Past Questions

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
11
Which of the statements about the behaviour of the atom is correct?
  • A. atomic size decreases down the group
  • B. atomic size increases across the period
  • C. anions are smaller than the parent atom
  • D. cations are smaller than the parent atom
View Answer & Discuss (2) WAEC 2009
12
Which of the following properties of covalent compounds is not correct? They
  • A. are non-electrolytes
  • B. are mostly gaseous and volatile liquids
  • C. have low melting point
  • D. have high boiling points
View Answer & Discuss (2) WAEC 2009
13
Which of the following arrangements is in order of increasing ionization energy?
  • A. AI, Si, P, S
  • B. Si, AI,S,P
  • C. S,P,Si,AI
  • D. P, Si,S,AI
View Answer & Discuss WAEC 2009
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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14
In bonded atoms, increase in electronegativity difference,
  • A. increases polarity
  • B. decreases polarity
  • C. has no effect on polarity
  • D. brings the polarity to zero
View Answer & Discuss WAEC 2009
15
Which of the following molecules is not linear in shape?
  • A. CO2
  • B. O 2
  • C. NH3
  • D. HCI
View Answer & Discuss (1) WAEC 2009
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