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Chemistry 2003 WAEC Past Questions

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26

Wine containing 8% to 17% ethanol can be converted to gin containing about 40% ethanol by

  • A. evaporation
  • B. distilation
  • C. fermentation
  • D. oxidation
View Answer & Discuss (4) WAEC 2003
27
Which of the following substances could be responsible for the banana taste of a food flavour?
  • A. Methylbenzene
  • B. Butanol
  • C. Ethanol
  • D. Pentylethanoate
View Answer & Discuss WAEC 2003
28

What is the organic product of the reaction of C2H 5OH with excess acidified K 2Cr 2O7(aq)?

  • A. CH3COOH
  • B. C2H5OC2H5
  • C. HCOOCH 3
  • D. C2H5CHO
View Answer & Discuss (2) WAEC 2003
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29
The reaction of vegetable oil with a solution of wood ash is
  • A. saponification
  • B. neutralization
  • C. hydrogenation
  • D. esterification
View Answer & Discuss WAEC 2003
30

What process does the following equation represent ? n(C\(_{6}\)H\(_{10}\)O\(_{5}\)) + nH\(_{2}\)O → nC\(_{6}\)H\(_{12}\)O\(_{6}\) ?

 

  • A. Polymerization of glucose
  • B. Hydrolysis of starch
  • C. Fermentation of sugar
  • D. Dehydration of carbohydates
View Answer & Discuss (2) WAEC 2003
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