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Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 1111:
The compound that makes palm wine taste sour after exposure to the air for few days is
  • A Ethanol
  • B Ethanoic acid
  • C Methanol
  • D Methanoic acid
View Answer & Explanation
Question 1112:
The reagent that can be used to distinguish ethene from ethyne is
  • A Ammoniacal silver trioxonitrate (V) solution
  • B Benedict solution
  • C Bromine water
  • D Fehling's solution
View Answer & Explanation
Question 1113:
The following substances are ores of metals except
  • A Bauxite
  • B Cuprite
  • C Cassiterite
  • D Graphite
View Answer & Explanation
Question 1114:
Which of the following processes does not involve the use of limestone?
  • A Extraction of iron in the blast furnance
  • B Manufacture of tetraoxosulphate (VI) acid by Contact process
  • C Production of washing soda by Solvay process
  • D Production of cement
View Answer & Explanation
Question 1115:
Aluminium is extracted electrolysis from
  • A Bauxite
  • B Cryolite
  • C Duralumin
  • D Kaolin
View Answer & Explanation