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Chemistry 2022 JAMB Past Questions

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31

H\(^+\) + OH\(^-\) → H\(_2\)O

The equation above illustrates

  • A. precipitation
  • B. hydration
  • C. hydrolysis
  • D. neutralization
View Answer & Discuss (6) JAMB 2022
32

Electrons enter into orbitals in order of increasing energy as exemplified by?

  • A. 1S\(^2\)2S\(^2\)2PX\(^2\)2py\(^2\)2pz\(^0\)3s\(^0\)
  • B. 1S\(^2\)2S\(^2\)2PX\(^2\)2py\(^1\)2pz\(^1\)3s\(^0\)
  • C. 1S\(^2\)2S\(^2\)2PX\(^1\)2py\(^1\)2pz\(^1\)3s\(^1\)
  • D. 1S\(^2\)2S\(^2\)2PX\(^2\)2py\(^2\)2pz\(^0\)3s\(^1\)
View Answer & Discuss (1) JAMB 2022
33

Wrought iron is obtained by heating cast iron in a furnace with?

  • A. magnetite
  • B. haematite
  • C. carbon(ii)oxide
  • D. calcium trioxosilicate(iv)
View Answer & Discuss (1) JAMB 2022
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34

In the extraction of iron, hot air is introduced into the blast furnace through?

  • A. valves
  • B. open-hearths
  • C. arcs
  • D. tuyeres
View Answer & Discuss (1) JAMB 2022
35

How many bonding pair are present in carbon(iv)oxide? 

  • A. 4
  • B. 3
  • C. 2
  • D. 1
View Answer & Discuss (3) JAMB 2022
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