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Chemistry 2001 JAMB Past Questions

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11

Deliquescent substances are used for

  • A. Cooling
  • B. Wetting
  • C. Melting
  • D. Drying
View Answer & Discuss (4) JAMB 2001
12

Pure solvents are obtained by

  • A. Distillation
  • B. Condensation
  • C. Extraction
  • D. Evaporation
View Answer & Discuss (3) JAMB 2001
13

What is the decrease in volume of air when pyrogallol is shaken with 30.00cm\(^3\) of air ?

  • A. 15.00cm3
  • B. 6.30cm3
  • C. 0.63cm3
  • D. 0.06cm3
View Answer & Discuss (12) JAMB 2001
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14

Environmental pollution is worsened by the release from automobile exhausts of?

  • A. Water vapour
  • B. Steam
  • C. Smoke
  • D. Heavy metals
View Answer & Discuss (26) JAMB 2001
15

The chemical used for coagulation in water purification is

  • A. Aluminium tetraoxosulphate (VI)
  • B. Copper tetraoxosulphate (VI)
  • C. Sodium tetraoxosulphate (VI)
  • D. Calcium tetraoxosulphate (VI)
View Answer & Discuss (9) JAMB 2001
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