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Chemistry 2018 JAMB Past Questions

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26

The number of electrons in the valence shell of an element of atomic number 14 is?

  • A. 1
  • B. 2
  • C. 3
  • D. 4
View Answer & Discuss (7) JAMB 2018
27

What volume of oxygen will remain after reacting 8cm\(^3\) of hydrogen gas with 20cm\(^3\) of oxygen gas?

  • A. 10cm\(^3\)
  • B. 12cm\(^3\)
  • C. 14cm\(^3\)
  • D. 16cm\(^3\)
View Answer & Discuss (17) JAMB 2018
28

If one of the following oxides is heated with hydrogen or carbon using a bunsen burner. it is not reduced to the metal, Which one is it?

  • A. lead oxide
  • B. Magnesium oxide
  • C. Copper oxide
  • D. Tin oxide
View Answer & Discuss (7) JAMB 2018
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29

The lUPAC name for

  • A. 1-methyl pentane
  • B. 3-methylbutane
  • C. 2-methylbutane
  • D. 1-dimethyl propane
View Answer & Discuss (21) JAMB 2018
30

An aqueous solution of a metal salt, M. gives a white precipitate with NaOH which dissolves in excess NaOH. With aqueous ammonia, the solution of M also gives a white precipitate which dissolves in excess ammonia Therefore the cation in M is

  • A. Zn
  • B. Ca
  • C. Al
  • D. Pb
View Answer & Discuss (5) JAMB 2018
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