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Wednesday, 01 April 2026
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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 26:
Which of the following ions requires the largest quantity of electricity for discharge at an electrode?
  • A 2.0 mole of Q3+
  • B 2.5 mole of R2+
  • C 3.0 mole of T-
  • D 4.0 mole of Y-
View Answer & Explanation
Question 27:
Hydrogen can be displaced from a lot alkaline solution by
  • A Fe
  • B Cu
  • C Cn
  • D Sn
View Answer & Explanation
Question 28:
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 I and II only
  • C III only
  • D I only
View Answer & Explanation
Question 29:
Rare gases are suitable because they
  • A Are monoatomic
  • B Form ions easily
  • C Have duplet or octet electronic configuration in the outermost shells in their atoms
  • D Are volatile gases
View Answer & Explanation
Question 30:
A major source of oxide of nitrogen is from the burning of
  • A Coal
  • B Wood
  • C Fuel
  • D Chlorofluorocarbons
View Answer & Explanation