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Chemistry Past Questions

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2741
Vulcanization involve the removal of
  • A. monometer
  • B. the single bond
  • C. the double bond
  • D. a polymer
View Answer & Discuss (2) JAMB 2015
2742

The acid in electrolysis of water is dilute

  • A. HNO3
  • B. CH3COOH
  • C. H2SO4
  • D. HCl
View Answer & Discuss (4) JAMB 2015
2743

A small quantity of solid ammonium chloride (NH4Cl) heated gently in a test tube, the solid gradually disappear produce two gases. Later, a white cloudy deposit was absence on the cooler part of the test tube. The ammonium chloride is to have undergo

  • A. distillation
  • B. sublimation
  • C. precipitation
  • D. evaporation
View Answer & Discuss (2) JAMB 2015
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2744
When salt loses its water of crystallization to the atmosphere on exposure, the process is said to be
  • A. efflorescence
  • B. déliquescence
  • C. effervescence
  • D. fluorescence
View Answer & Discuss (1) JAMB 2015
2745
Atomicity of ozone is
  • A. 1
  • B. 2
  • C. 3
  • D. 4
View Answer & Discuss (2) JAMB 2015
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