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6
Which of the following compound is aromatic?
  • A. Benzene
  • B. Cyclobutane
  • C. Cyclopentane
  • D. Hexane
  • E. Ethene
View Answer & Discuss (1) WAEC 1988
7
Which of the following does not affect the rate of a chemical reaction?
  • A. Addition or presence of a catalyst
  • B. Size of the reacting particles
  • C. The enthalpy change for the reaction
  • D. Concentration of the reactants
  • E. Temperatureat which the reaction is carried out
View Answer & Discuss (2) WAEC 1988
8
Which of the following does not affect the rate of a chemical reaction?
  • A. Addition or presence of a catalyst
  • B. Size of the reacting particles
  • C. The enthalpy change for the reaction
  • D. Concentration of the reactants
  • E. Temperatureat which the reaction is carried out
View Answer & Discuss (2) WAEC 1988
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9

Given that 32.0g sulphur contains 6.02 x 10 23 sulphur atoms how many atoms are there in 2.70g of aluminium? {Al = 27, S =32}

  • A. 6.02 x 10 23
  • B. 3.01 x 1022
  • C. 6.02 x 1022
  • D. 5. 08 x 1022
  • E. 3.01 x 1022
View Answer & Discuss (8) WAEC 1988
10
The empirical formula of hydrocarbon containing 0. 12 mole of carbon and 0.36 mole of hydrogen is
  • A. CH2
  • B. CH3
  • C. C2H2
  • D. C2H4
  • E. C2H6
View Answer & Discuss (4) WAEC 1988
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