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Chemistry Past Questions

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291

The oxidation state of chlorine in HClO\(_4\) is

  • A. -5
  • B. -1
  • C. +1
  • D. +7
View Answer & Discuss (3) JAMB 2004
292

ZnO(s) + CO(g) → Zn(s) + CO\(_2\)(g)
In the reaction above, Zinc has been

  • A. decomposed
  • B. displaced
  • C. oxidized
  • D. reduced
View Answer & Discuss (7) JAMB 2004
293

Which of the following acts as both reducing and oxidizing agent?

  • A. H2
  • B. SO2
  • C. H2S
  • D. CO2
View Answer & Discuss (13) JAMB 2004
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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294

In the electrolysis of brine, the anode is

  • A. platinum
  • B. copper
  • C. zinc
  • D. carbon
View Answer & Discuss (4) JAMB 2004
295

The mass of silver deposited when a current of 10A is passed through a solution of silver salt for 4830s is
[Ag = 108, 1F = 96500 Cmol-1]

  • A. 108.0g
  • B. 54.0g
  • C. 27.0g
  • D. 13.5g
View Answer & Discuss (9) JAMB 2004
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