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Friday, 03 April 2026
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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 21:
A change in temperature of a saturated solution disturb the equilibrium between the
  • A Dissolved solute and the solvent
  • B Solvent and undissolved solute
  • C Dissolved solute and undissolved solute
  • D Dissolved solute and the solution
View Answer & Explanation
Question 22:
If an equilibrium reaction has ΔH > 0, the reaction will proceed favourably in the forward direction at
  • A High temperature
  • B Any temperature
  • C Low temperature
  • D Minimum temperature
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Question 23:
The commonest feature of reactions at the anode is that
  • A Electrons are consumed
  • B Oxidation is involved
  • C Ions are reduced
  • D Electrode dissolves
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Question 24:
Which of the following will change when a catalyst is added to a chemical reaction?
  • A The activation energy
  • B The potential energy of the reactants
  • C The heat of the reaction
  • D The potential energy of the product
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Question 25:
If y is an oxidizing agent that reacts with a reducing agent, Z, which of the following is correct?
  • A Y increases in oxidation number
  • B Y becomes reduced
  • C Z loses protons
  • D Z gains protons
View Answer & Explanation