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Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 1106:
Which of the following compounds determines the octane rating of petrol?
  • A 1,2,3 - trimethlpentane
  • B 2,3,5 - trimethyloctane
  • C 2,3,5 - trimethylpentane
  • D 2,2,4 - trimethylpentane
View Answer & Explanation
Question 1107:
Which of the following compounds would react with ethanoic acid to give a sweet smelling liquid?
  • A Alkane
  • B Alkanol
  • C Alkanal
  • D Alkyne
View Answer & Explanation
Question 1108:
Which of the following separation techniques would show that black ink is a mixture of chemical compounds?
  • A Crystallization
  • B Chromatography
  • C Filtration
  • D Sublimation
View Answer & Explanation
Question 1109:
The following substances are examples of addition polymer except
  • A Nylon
  • B Perspex
  • C Polyethene
  • D Polychloroethene
View Answer & Explanation
Question 1110:
When bromine is added to ethene at room temperature, the compound formed is
  • A 1,1 - dibromoethane
  • B 1,2 - dibromoethene
  • C 1,1 - dibromoethene
  • D 1,2 - dibromoethane
View Answer & Explanation