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Chemistry 2017 JAMB Past Questions

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41

A particle that contains 9 protons, 10 neutrons and 10 electrons is

  • A. positive ion
  • B. neutral atom of a metal
  • C. neutral atom of a non-metal
  • D. negative ion
View Answer & Discuss (3) JAMB 2017
42
Ethene is prepared industrially by
  • A. Reforming
  • B. Polymerization
  • C. Distillation
  • D. Cracking
View Answer & Discuss JAMB 2017
43

Calculate the amount in moles of a gas which occupies 10.5 dm3 at 6 atm and 30oC [R = 0.082 atm dm3 K-1 mol-1]

  • A. 2.536
  • B. 1.623
  • C. 4.736
  • D. 0.394
View Answer & Discuss (1) JAMB 2017
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44
If 100cm3 of oxygen pass through a porous plug is 50 seconds, the time taken for the same volume of hydrogen to pass through the same porous plug is? [O = 16, H = 1]
  • A. 10.0s
  • B. 12.5s
  • C. 17.7s
  • D. 32.0s
View Answer & Discuss (4) JAMB 2017
45
Due to the high reactivity of sodium, it is usually stored under
  • A. water
  • B. mercury
  • C. paraffin
  • D. phenol
View Answer & Discuss JAMB 2017
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