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Chemistry WAEC Past Questions

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1026

The liquid hydrocarbon likely to be found in the fraction of crude oil used for domestic cooking is?

  • A. C3H8
  • B. C 5H 12
  • C. C13H28
  • D. C20H42
View Answer & Discuss (9) WAEC 2014
1027
Consider the reaction represented by the following equation: C2H4(g)
+ 302(g) → 2CO2(g) + 2H2O(g)How many moles of ethene would be burnt to produce 0.1 mole of water?
  • A. 0.05 mole
  • B. 0.10 mole
  • C. 0.20 mole
  • D. 2.00 moles
View Answer & Discuss (4) WAEC 2014
1028
Which of the following organic compounds could be represented by the empirical formula CH2O?
  • A. Ethanal
  • B. Ethane
  • C. Ethanol
  • D. Ethanoic acid
View Answer & Discuss (11) WAEC 2014
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1029
The production of biogas from the fermentation of waste materials is an example of
  • A. combustion
  • B. incineration
  • C. refining
  • D. recycling
View Answer & Discuss (3) WAEC 2014
1030

The purity of a solid sample can best be determined by its?

  • A. boiling point
  • B. melting point
  • C. conductivity
  • D. solubility
View Answer & Discuss (3) WAEC 2014
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