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Post UTME Past Questions Agent
826
The active reducing agent in the blast furnace for the extraction of iron is?
  • A. carbon
  • B. limestone
  • C. carbon(II)oxide
  • D. calcium oxide
View Answer & Discuss (1) JAMB 1993
827
The fraction of crude oil used as jet fuel is?
  • A. refinery gas
  • B. diesel oil
  • C. kerosene
  • D. gasoline
View Answer & Discuss (5) JAMB 1993
828
It is not desirable to use lead tetraethyl as an anti-knock agent because?
  • A. it is expensive
  • B. of pollution effects from the exhaust fumes
  • C. it lowers the octane rating of petrol
  • D. it is explosive
View Answer & Discuss (1) JAMB 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
829
Al2O3(s) + 3H2SO4(aq) → Al2(SO4(aq)) + 3H2(I)O
Al2O3(s) + 2NaOH(aq)) + 3H2(I)O → 2NaAl(OH)4(aq)).
We can conclude from the equations above that Al2O3(s) is?
  • A. an acidic oxide
  • B. an amphoteric oxide
  • C. a basic oxide
  • D. a neutral oxide
View Answer & Discuss (1) JAMB 1993
830
The carbon atoms on ethane are?
  • A. sp2 hybridized
  • B. sp3 hybridized
  • C. sp2d hybridized
  • D. sp hybridized
View Answer & Discuss (7) JAMB 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
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