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Chemistry JAMB Past Questions

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1016

Which of the following types of reactions takes place between C2H6 and the halogens?

  • A. Substitution
  • B. Polymerization
  • C. Addition
  • D. Saponification
  • E. Oxidation
View Answer & Discuss (16) JAMB 1982
1017

The product formed at the the cathode during the electrolysis of sodium chloride solution with carbon electrodes is?

  • A. sodium
  • B. chlorine
  • C. hydrogen
  • D. sodium hydroxide
  • E. oxygen
View Answer & Discuss (22) JAMB 1982
1018
Sodium carbonate crystals on exposure to a dry atmosphere change to a white powder. This phenomenon is known as?
  • A. deliquescence
  • B. hygroscopy
  • C. oxidation
  • D. efforescence
  • E. sublimation
View Answer & Discuss (2) JAMB 1982
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1019
Which of the following statements is incorrect?
  • A. Calcium reacts with water to form calcium
  • B. Magnesium reacts very slowly with water but faster with warm water
  • C. Iron will not react with water in the absence of air
  • D. Sodium reacts with water
  • E. Copper reacts with steam
View Answer & Discuss (21) JAMB 1982
1020

In the reaction NH3 + H+ → NH4+, the bond formed results from?

  • A. an electron transferred from NH3 + H+
  • B. an electron pair donated by NH3
  • C. an electron pair equally shared
  • D. an electron pair donated by H+
  • E. an electron tarnsferred from H+ to NH3
View Answer & Discuss (9) JAMB 1982
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