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Chemistry 2013 WAEC Past Questions

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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41
A hydrocarbon compound contains 92.3% carbon Determine its empirical formula [H = 1.00; C = 12.0]
  • A. CH
  • B. CH2-
  • C. CH3
  • D. C3H2
View Answer & Discuss (6) WAEC 2013
42
The main function of limestone in the blast furnace is to
  • A. act as catalyst
  • B. act as reducing agent
  • C. remove impurity
  • D. supply carbon (IV) oxide
View Answer & Discuss (2) WAEC 2013
43
Which of the following raw materials is used in a plastic industry?
  • A. Ethene
  • B. Methane
  • C. Calcium
  • D. Hydrogen
View Answer & Discuss (2) WAEC 2013
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
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44
Which of the following statements about fine chemical is correct? It
  • A. is injurious to health
  • B. has low degree of purity
  • C. is produced in relatively small amount
  • D. can be stored for a long time
View Answer & Discuss WAEC 2013
45
Which of the following materials is classified as a non-biodegradable pollutant?
  • A. Animal hide
  • B. Paper
  • C. Plastic
  • D. Wood
View Answer & Discuss WAEC 2013
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709