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Chemistry 2009 WAEC Past Questions

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36
Consider the reaction represented by the equation: 2H2SO 4(aq0 + C(s) → 2H2O(l) + 2SO2(g) + CO 2(g) H2SO 4 is acting as
  • A. a catalyst
  • B. an oxidizing agent
  • C. a reducing agent
  • D. a sulphonating agent
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37
Which of the following oxides of nitrogen has oxidation number of + 1?
  • A. KNO3
  • B. N2O
  • C. N2O3
  • D. NO
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38
The separation of petroleum fractions depends on the differences in their
  • A. boiling points
  • B. molar masses
  • C. melting point
  • D. solubilities
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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NECO offline past questions - All questions, answers & explanations in one app 25712
39
Which of the following raw materials is used in the plastic industry ?
  • A. Calcium
  • B. Ethene
  • C. Hydrogen
  • D. Methane
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40
The product of the reaction between C 2H5OH and concentrated H2SO 4 at 170oC is
  • A. (C2H5)2SO4
  • B. CH 3CH 2HSO 4
  • C. (C2H5)2O
  • D. CH2 = CH 2
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts