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Chemistry Past Questions

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3746

The emission of two successive beta particles from the nucleus \(^{32} _{15} P\) will produce

  • A. \(^{30} _{14}\)Si
  • B. \(^{32} _{13}\)Al
  • C. \(^{32} _{17}\)Cl
  • D. \(^{32} _{16}\)S
View Answer & Discuss (2) JAMB 2019
3747

Hydrogen diffused through a porous plug

  • A. thrice as fast as oxygen
  • B. at the same speed as oxygen
  • C. four times as fast as oxygen
  • D. twice as fast as oxygen
View Answer & Discuss (3) JAMB 2019
3748

If the cost of electricity required to discharge 10g of an ion X\(^{3+}\) is N20.00, how much would it cost to discharge 6g of ion Y\(^{2+}\)?

[1 faraday = 96,500C, atomic masses are X = 27, Y = 24]

  • A. N10.00
  • B. N6.00
  • C. N20.00
  • D. N9.00
View Answer & Discuss (2) JAMB 2019
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3749

The cost of discharging 6.0g of a divalent metal, X from its salt is ₦12.00. What is the cost of discharging 9.0g of a trivalent metal, Y from its salt under the same condition?
[X = 63, Y = 27, 1F = 96,500C]

  • A. N12.00
  • B. N27.00
  • C. N63.00
  • D. N95.00
View Answer & Discuss (1) JAMB 2019
3750

How many alkoxyalkanes can be obtained from the molecular formula C\(_4\)H\(_{10}\)O?

  • A. 4
  • B. 2
  • C. 1
  • D. 3
View Answer & Discuss (7) JAMB 2019
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