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1

Carbon exist naturally in the combined state as?

  • A. graphite
  • B. coal
  • C. diamond
  • D. wood
View Answer & Discuss (17) JAMB 2006
2

The gasification of coke is used for the manufacturing of?

  • A. producer gas
  • B. natural gas
  • C. synthetic gas
  • D. industrial gas
View Answer & Discuss (18) JAMB 2009
3

Which of the following allotrope of carbon is a constituent of a lead pencil?

  • A. Graphite
  • B. Diamond
  • C. Lampblack
  • D. Soot
View Answer & Discuss (6) JAMB 2009
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
4

Carbon (II) oxide is considered dangerous if inhaled mainly because it?

  • A. can cause injury to the nervous system
  • B. competes with oxygen in the blood
  • C. competes with carbon (IV) oxide in the blood
  • D. can cause lung cancer
View Answer & Discuss (6) JAMB 2010
5

Water gas is a mixture of?

  • A. CO2 and H2
  • B. CO and H2O
  • C. CO2 and CO
  • D. CO and N2
  • E. CO and H2
View Answer & Discuss (5) WAEC 1988
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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
WAEC offline past questions - with all answers and explanations in one app - Download for free