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181

A little quantity of trichloromethane (b.pt 60\(^0\)C) was added to a large quantity of ethanol (b.pt 78\(^0\)C). The most probable boiling point of the resultant mixture is from

  • A. 69 oC - 70 oC
  • B. 70 oC – 74 oC
  • C. 82 oC – 84 oC
  • D. 60 oC – 78 oC
View Answer & Discuss (17) JAMB 2002
182

The chromatography separation of ink is based on the ability of the components to

  • A. React with solvent
  • B. React with each other
  • C. Dissolve in each other in the column
  • D. Move at different speeds in the column
View Answer & Discuss (2) JAMB 2002
183

Which of the following gases contains the least number of atoms at s.t.p?

  • A. 1 mole of butane
  • B. 3 mole of ozone
  • C. 4 mole of chlorine
  • D. 7 mole of argon
View Answer & Discuss (19) JAMB 2001
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184

In the reaction E+F ↔ G+H, the backward reaction is favoured if the concentration of

  • A. F is increased
  • B. E is increased
  • C. E is reduced
  • D. G is reduced
View Answer & Discuss (11) JAMB 2002
185

What amount of mercury would be liberated if the same quantity of electricity that liberates 0.65g of zinc is applied?

  • A. 2.01g
  • B. 1.00g
  • C. 4.02g
  • D. 8.04g
View Answer & Discuss (38) JAMB 2002
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