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Chemistry 1992 JAMB Past Questions

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1

There is a large temperature interval between the melting point and the boiling point of a metal because?

  • A. metals have very high melting points
  • B. metals conduct heat very repaidly
  • C. melting does not break the metalic bond but boiling does
  • D. the crystal lattice of metals is easily broken
View Answer & Discuss (30) JAMB 1992
2
How many moles of (H+) are there in 1 dm3 of 0.5 M solution of H2SO4?
  • A. 2.0 moles
  • B. 1.0 moles
  • C. 0.5 mole
  • D. 0.25 mole
View Answer & Discuss (4) JAMB 1992
3
wH2SO4 + xAI(OH)3 → yH2O + = zAI2(SO4)3. The respective values of w.x.y and z in the equation above are?
  • A. 2,2,5 and 1
  • B. 3,2,5 and 2
  • C. 3,2,6 and 1
  • D. 2,2,6 and 2
View Answer & Discuss (3) JAMB 1992
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4
A given mass of gas occupies 2 dm3 at 300k. At what temperature will its volume be doubled keeping the pressure constant?
  • A. 400 k
  • B. 480 k
  • C. 550 k
  • D. 600 k
View Answer & Discuss (6) JAMB 1992
5
Which of the following is a measure of the average kinetic energy of the molecules of a substance?
  • A. Volume
  • B. Mass
  • C. pressure from age grades
  • D. Temperature
View Answer & Discuss (2) JAMB 1992
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