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Chemistry 1992 JAMB Past Questions

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6
If 100 cm3 of oxygen pass through a porous plug in 50 seconds, the time taken for the same volume of hydrogen to pass through the same porous plug is?



(O = 16, H = 1)
  • A. 10.0 s
  • B. 12.5 s
  • C. 17.7 s
  • D. 32.0 s
View Answer & Discuss (5) JAMB 1992
7
An increase in temperature causes an increase in pressure of a gas in a fixed volume due to an increase in the?
  • A. number of molecules of the gas
  • B. density of the gas molecules
  • C. number of collisions between the gas molecules
  • D. number of collisions between the gas molecules and the walls of the container
View Answer & Discuss (1) JAMB 1992
8

The nucleus of the isotope tritium, contains?

  • A. two neutrons with no protons
  • B. one neutron and one protons
  • C. two neutrons and one proton
  • D. two neutrons, one proton and one electron
View Answer & Discuss (8) JAMB 1992
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9

How many lone pairs of electron are there on the central atom of the H2O molecules?

  • A. 1
  • B. 2
  • C. 3
  • D. 4
View Answer & Discuss (17) JAMB 1992
10
147N + X → 178O + 11 H. In the above reaction, X is a?
  • A. neutron
  • B. helium atom
  • C. litgium atom
  • D. deuterium atom
View Answer & Discuss (6) JAMB 1992
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