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Chemistry 1990 JAMB Past Questions

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41
If 10.8 g of silver is deposited in a silver coulometer volume of oxygen liberated is?
  • A. 0.56 dm3
  • B. 5.60 dm3
  • C. 11.20 dm3
  • D. 22.40 dm3
View Answer & Discuss (18) JAMB 1990
42
0.1 faraday of electricity deposited 2.95 g of nickel during electrolysis of an aqueous solution.
Calculate the number of moles of nickel that will be deposited by 0.4 faraday?

(Ni = 58.7)
  • A. 0.20
  • B. 0.30
  • C. 0.04
  • D. 5.87
View Answer & Discuss (7) JAMB 1990
43
Changes in the physical in the scheme above.The letter X,Y and Z respectively represent
  • A. sublimation, condensation and freezing
  • B. sublimation, vapourization and solidification
  • C. freezing, condensation and sublimation
  • D. evaporation, liquefaction and solidification
View Answer & Discuss (4) JAMB 1990
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44
Use the graph above to answer this question. The structure of cis-2-butene is
  • A. A
  • B. B
  • C. C
  • D. D
View Answer & Discuss (4) JAMB 1990
45

What is the IUPAC name for the hydrocarbon?

  • A. 2-ethyl-4-methylpent-2-ene
  • B. 3,5-dimethylhex-3-ene
  • C. 2,4-dimethylhex 3-ene
  • D. 2-methyl-4-ethylpent-3-ene
View Answer & Discuss (47) JAMB 1990
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