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1531

The IUPAC name for the compound is

  • A. 2,3-dimethylpent-2,3-ene
  • B. 2, 3- dimethylpent-2-ene
  • C. 3, 4-dimethylpent-3-ene
  • D. 3,4-dimethylpentene
  • E. 3,4-dimethlhept-2-ene
View Answer & Discuss (9) JAMB 1980
1532
Which of the following compounds will take up the molecules of bromine?
  • A. l
  • B. ll
  • C. lll
  • D. l and ll
  • E. l and lll
View Answer & Discuss (17) JAMB 1980
1533

Which of the following is the correct order in the above diagram increasing boiling point, of the isomeric \(C_{5}H_{12}\) compounds?

  • A. A
  • B. B
  • C. C
  • D. D
  • E. E
View Answer & Discuss (15) JAMB 1980
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1534

The following graph demonstrates the rate of reaction between calcium carbonate (marble)and dilute hydrochloric acid. The graph shows that the rate of reaction is initially greatest when

  • A. the initial slope of the curve is steepest and this occur when small pieces of marble are used and is due to a small surface area of reactant
  • B. the occur when large pieces of marble are used and is due to a small surface area of reactant
  • C. the initial slope of the curve is steepest and this occurs when small pieces of marble are used and is due to a large surface area of reactant
  • D. the initial slope of the curve is steepest and this occur when large surface area of reactant
  • E. the initial slope of the curve is least steep and this occur when small pieces of marble are used and is due to the increased surface area of the reactant
View Answer & Discuss (4) JAMB 1980
1535

Copper sulphate solution was electrolysed using the apparatus show above. Which of the following changes are observed?

  • A. The bulb lights and copper is deposited at both electrodes
  • B. the bulb lights and copper is deposited at the anode and disappears from the cathode
  • C. the bulb lights and copper is deposited at the cathode and oxygen liberated at the anode
  • D. the bulb lights and copper is deposited at the cathode and disappears from the anode
  • E. the bulb lights but no additional changes are observed
View Answer & Discuss (7) JAMB 1980
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