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Chemistry Past Questions

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2726
When alkynes are hydrogenated completely they produce compounds with the general molecular formula
  • A. CnHn
  • B. CnH2n
  • C. CnH2n+2
  • D. CnH2n-2
View Answer & Discuss (3) WAEC 2002
2727
The following compounds are hydrocarbons except
  • A. methylpropanoate
  • B. 2-methylbutane
  • C. benzene
  • D. cyclohexane
View Answer & Discuss (1) WAEC 2002
2728
The reaction between ethene and chlorine to form 1, 2-dichloroethane is
  • A. oxidation
  • B. polymerization
  • C. addition
  • D. substitution
View Answer & Discuss (1) WAEC 2002
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2729
Which of the following statements about soapless detergents is correct? They
  • A. lather readily with hard water
  • B. increase the surface tension of water
  • C. cause hydrolysis of salts in water
  • D. from a curdy precipitate with soft water
View Answer & Discuss (3) WAEC 2002
2730

Which of the following types of alkanols undergo oxidation to produce alkanoic acids? I. Primary alkanols  II. Secondary alkanols III. Tertiary alkanols

  • A. I,II and III
  • B. l and ll only
  • C. ll only
  • D. l only
View Answer & Discuss (11) WAEC 2002
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