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Chemistry JAMB Past Questions

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1271
An increase in the pressure exerted on gas at a constant temperature results in
  • A. a decrease in the number of effective collisions
  • B. a decrease in volume
  • C. an increase in the average intermolecular distance
  • D. an increase in volume
View Answer & Discuss (7) JAMB 2012
1272
2H2(g) + O2(g) → 2H2 O(g)
In the reaction above, what volume of hydrogen would be left over when 300 cm3 of oxygen and 1000 cm3 of hydrogen are exploded in a sealed tube?
  • A. 200 cm3
  • B. 400 cm3
  • C. 600 cm3
  • D. 700 cm3
View Answer & Discuss (6) JAMB 2012
1273
l . Evaporation. ll. Sublimation. lll. Diffusion. IV. Brownian motion.
Which of the above can correctly be listed as evidences for the particulate nature of matter?
  • A. I and lll only
  • B. ll and lV only
  • C. l, ll and lll only
  • D. l, ll, lll and lV
View Answer & Discuss (7) JAMB 2012
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1274

If the elements X and Y have atomic numbers 11 and 17 respectively, what type of bond can they form?

  • A. Dative
  • B. Covalent
  • C. Ionic
  • D. Metallic
View Answer & Discuss (5) JAMB 2012
1275

A hydrogen atom which has lost an electron contains

  • A. one proton only
  • B. one neutron only
  • C. one proton and one neutron
  • D. one proton, one electron and one neutron
View Answer & Discuss (11) JAMB 2012
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