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Wednesday, 01 April 2026
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Chemistry Past Questions and Answers

Chemistry Questions

Question 1161:
A little quantity of trichloromethane (b.pt 60,oC) was added to a large quantity of ethanol (b.pt 78,oC). The most probable boiling point of the resultant mixture is from
  • A 69 oC - 70 oC
  • B 70 oC – 74 oC
  • C 82 oC – 84 oC
  • D 60 oC – 78 oC
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Question 1162:
The chromatography separation of ink is based on the ability of the components to
  • A React with solvent
  • B React with each other
  • C Dissolve in each other in the column
  • D Move at different speeds in the column
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Question 1163:
In the reaction E+F ↔ G+H, the backward reaction is favoured if the concentration of
  • A F is increased
  • B E is increased
  • C E is reduced
  • D G is reduced
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Question 1164:
What amount of mercury would be liberated if the same quantity of electricity that liberates 0.65g of zinc is applied?
  • A 2.01g
  • B 1.00g
  • C 4.02g
  • D 8.04g
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Question 1165:
Which of the following equations show that a reaction is in equilibrium?
  • A ΔG < O
  • B ΔG = ΔH – TΔS
  • C ΔG > O
  • D ΔG = O
View Answer & Explanation