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Wednesday, 01 April 2026
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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 21:
Which of the following salts is slightly soluble in water?
  • A AgCl
  • B CaSO4
  • C Na2CO3
  • D PbCl2
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Question 22:
6AgNO4(aq) + PH3(g) + 3H2O(l) → 6Ag(s) + H3PO3(g) + 6HNO3(aq)
In the above reaction, the reducing agent is
  • A HNO3(aq)
  • B H2O(l)
  • C PH3(g)
  • D AgNO3(aq)
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Question 23:
The IUPAC nomenclature of the compound LiAlH4 is
  • A Lithiumtetrahydridoaluminate (III)
  • B Aluminium tetrahydrido lithium
  • C Tetrahydrido lithium aluminate (III)
  • D Lithium aluminium hydride
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Question 24:
Iron can be protected from corrosion by coating the surface with
  • A Gold
  • B Silver
  • C Copper
  • D Zinc
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Question 25:
What quantity of aluminium is deposited when a current of 10A is passed through a solution of an aluminium salt for 1930s?
[Al = 27, F = 96500 C mol -1]
  • A 0.2 g
  • B 1.8 g
  • C 5.4 g
  • D 14.2 g
View Answer & Explanation