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Chemistry 2009 JAMB Past Questions

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11

The mixture of gases used in a photographer's flash tube is?

  • A. argon and krypton
  • B. krypton and xenon
  • C. helium and argon
  • D. argon and xenon
View Answer & Discuss (7) JAMB 2009
12

When sodium trioxocarbonate (IV) decahydrate loses its water of crystallization to the atmosphere, the process is?

  • A. deliquescence
  • B. efflorescence
  • C. hygroscopic
  • D. effervesecence
View Answer & Discuss JAMB 2009
13

Water can be obtained as the only product during the?

  • A. combustion of hydrocarbons
  • B. neutraliization of an acid by base
  • C. combustion of hydrogen
  • D. electrolysis of brine
View Answer & Discuss (4) JAMB 2009
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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14
If 10.5g of lead (II) trioxonitrate (V) is dissolved in 20cm3 of distilled water at 18oC, the solubility of the solute in mol dm-3 is
[Pb = 207, N = 14, O = 16]
  • A. 1.60
  • B. 5.25
  • C. 16.00
  • D. 525.00
View Answer & Discuss (6) JAMB 2009
15
For a given solute, the concentration of its saturated solution in different solvents are
  • A. the same at the same temperature
  • B. different at the same temperature
  • C. the same at different temperature
  • D. constant
View Answer & Discuss JAMB 2009
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