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Thursday, 02 April 2026
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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 11:
The ability of ionic solids is generally due to the?
  • A Negative electron affinity of most atoms
  • B Crystal lattice forces
  • C Electron pair sharing
  • D Positive ionization potentials
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Question 12:
Which of the following statements is FALSE about isotopes of the same element?
  • A They have the same number of electrons in their outermost shells
  • B They have different atomic masses
  • C They have the same atomic number and the number of electrons
  • D They have the same atomic number but different umber of elelctrons
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Question 13:
Helium is often used in observation balloons because it is?
  • A Light and combustible
  • B Light and non-combustible
  • C Heavy and combustible
  • D Heavy and non-combustible
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Question 14:
Deliquescent substances are also?
  • A Efflorescent
  • B Anhydrous
  • C Hygroscopic
  • D Insoluble
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Question 15:
When plastics and packaging materials made from chloroethene are burnt in the open, the mixture of gases released into the atmosphere is most likely to contain?
  • A Ethane
  • B Chlorine
  • C Hydrogen chloride
  • D Ethene
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