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Chemistry JAMB Past Questions

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1736

From the above diagram, the caustic soda in the conical flask serves to

  • A. dry ethene gas
  • B. remove carbon (iv) oxides from ethene
  • C. remove carbon (ii) oxide from ethene
  • D. remove sulphur (iv) oxide from ethene
View Answer & Discuss (11) JAMB 1994
1737

The dissolution of common salt in water is a physical change because

  • A. the salt can be obtained by crystallization
  • B. the salt can be recovered by the evaporation of water
  • C. heat is not generated during mixing
  • D. the solution will not boil at 100oC
View Answer & Discuss (11) JAMB 1993
1738
At 25oC and 1atm, a gas occupies a volume of 1.50dm3. What volume will it occupy at 100oC and 1atm?
  • A. 1.88 dm3
  • B. 6.00 dm3
  • C. 18.80 dm3
  • D. 18.80 dm3
  • E. 60.00dm3
View Answer & Discuss (6) JAMB 1993
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1739
The fraction of crude oil used as jet fuel is
  • A. refinery gas
  • B. diesel oil
  • C. kerosine
  • D. gasoline
View Answer & Discuss (7) JAMB 1993
1740
A given mass of gas occupies 2 dm2 at 300k. At what temperature will its volume be doubled keeping the pressure constant?
  • A. 400k
  • B. 480k
  • C. 550k
  • D. 600k
View Answer & Discuss (2) JAMB 1992
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