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Chemistry 1993 WAEC Past Questions

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6
Alkanes are used mainly
  • A. in the production of plastics
  • B. as domestic and industrial fuels
  • C. in the textile industry
  • D. in the hydrogenation of oils
  • E. as fine chemicals
View Answer & Discuss WAEC 1993
7
Which of the following pairs illustrates isotopy?
  • A. But-l-ene and but -2-ene
  • B. Ortho-hydrogen and parahydrogen
  • C. Oxygen and ozone
  • D. Hydrogen and deuterium
  • E. Alpha-particle and beta-particle
View Answer & Discuss (5) WAEC 1993
8

Carbon is often deposited in the exhaust-pipe of cars because of the?

  • A. presence of carbon in petrol
  • B. dehydrogenation of petrol
  • C. incomplete combustion of petrol
  • D. presence of additives in petrol
  • E. contamination of petrol with diesel
View Answer & Discuss (6) WAEC 1993
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9
What does X atand for in the following expression? X = Log(10)(H+)
  • A. Enthalpy change (∆H)
  • B. Equilibrium constant (K)
  • C. Solubility product
  • D. Degree of acidity (pH)
  • E. lonic product of water
View Answer & Discuss WAEC 1993
10
Sulphur burns in air to form
  • A. an acidic oxide
  • B. a basic oxide
  • C. an amphoteric oxide
  • D. a neutra oxide
  • E. a mixed oxide
View Answer & Discuss WAEC 1993
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC offline past questions - with all answers and explanations in one app - Download for free
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709