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Chemistry 2014 WAEC Past Questions

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO offline past questions - All questions, answers & explanations in one app 25712
41
The production of biogas from the fermentation of waste materials is an example of
  • A. combustion
  • B. incineration
  • C. refining
  • D. recycling
View Answer & Discuss (3) WAEC 2014
42

The purity of a solid sample can best be determined by its?

  • A. boiling point
  • B. melting point
  • C. conductivity
  • D. solubility
View Answer & Discuss (3) WAEC 2014
43
Which of the following gases is used to retard the vaporization of the filament in a light bulb?
  • A. Argon
  • B. Helium
  • C. Hydrogen
  • D. Oxygen
View Answer & Discuss (2) WAEC 2014
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO offline past questions - All questions, answers & explanations in one app 25712
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44
The most common process in the extraction of metals from their ore is
  • A. catalysis
  • B. electrolysis
  • C. oxidation
  • D. reduction
View Answer & Discuss (14) WAEC 2014
45

The oxide from electric power station is

  • A. carbon (IV) oxide
  • B. copper (ll) oxide
  • C. nitrogen (IV) oxide
  • D. sulphur (IV) oxide
View Answer & Discuss (6) WAEC 2014
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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