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Chemistry 2015 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
NECO offline past questions - All questions, answers & explanations in one app 25712
6
A metallic ion Z2+ with an inert gas structure contains 18 electrons. How many protons are contained in this ion?
  • A. 20
  • B. 18
  • C. 16
  • D. 2
View Answer & Discuss (8) WAEC 2015
7

Which of the following pairs of elements forms amphoteric oxides?

  • A. Be and Mg
  • B. Na and K
  • C. B and Al
  • D. Si and Pb
View Answer & Discuss (15) WAEC 2015
8

Which of the following pairs of compounds belongs to the same homologous series?

  • A. C3H8 and C3H6
  • B. C4H10 and C5H10
  • C. C2H4 and C4H10
  • D. C2H6 and C4H10
View Answer & Discuss (10) WAEC 2015
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9
The following transition metal ions would be coloured in aqueous solution except________?
  • A. Cr3+
  • B. Fe3+
  • C. Mn3+
  • D. Sc3+
View Answer & Discuss (2) WAEC 2015
10
The gas given off when ethanol reacts with sodium is
  • A. Carbon(IV)oxide
  • B. Hydrogen
  • C. Methane
  • D. Oxygen
View Answer & Discuss (2) WAEC 2015
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