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Chemistry 2024 JAMB Past Questions

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31

CuO\(_s\)   +  H\(_2\)(\(_g\))  ⇌ Cu\(_s\)   +  H\(_2\)O(\(_g\))

In the equation above, the effect of increased pressure on the equilibrium position is that

  • A. the equilibrium is shifted to the left
  • B. the equilibrium is shifted to the right
  • C. there is no effect
  • D. more H\(_2\)\((g\)) is produced
View Answer & Discuss (8) JAMB 2024
32

What method is suitable for the separation of gases present in air?

  • A. Catalytic cracking of liquid air
  • B. Fractional distillation of liquid air
  • C. Thermal decomposition of air
  • D. Catalytic decomposition of air
View Answer & Discuss (3) JAMB 2024
33

The principle which states that no two electrons in the same orbitals of an atom have same value for all four quantum numbers is the

  • A. Aufbau principle
  • B. Hund's rule
  • C. Pauli Exclusion principle
  • D. Dilution principle
View Answer & Discuss (1) JAMB 2024
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34

How much of 5g of radioactive element whose half life is 50days remains after 200days?

  • A. 2.50 g
  • B. 1.25 g
  • C. 0.63 g
  • D. 0.31 g
View Answer & Discuss JAMB 2024
35

The group VIII elements are the inert gases because they 

  • A. have lone pair of electrons on their valence shells
  • B. all have completely filled valence shells
  • C. are all solids
  • D. are all polyatomic molecules
View Answer & Discuss (1) JAMB 2024
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