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Chemistry 1990 JAMB Past Questions

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21
The label on a reagent bottle containing a clear organic liquid dropped off.The liquid was neutral to litmus and gave a colourless gas with metallic sodium. The liquid must be an?
  • A. alkanoate
  • B. alkaene
  • C. alkanol
  • D. alkane
View Answer & Discuss (7) JAMB 1990
22
Alkaonic acids have low volatility compared with alkanols because they?
  • A. are more polar than alkaonls
  • B. have two oxygen atoms while alkanols have one
  • C. form hydrogen bonds while alkanols do not
  • D. form two hydrogen bonds while alkanols form one
View Answer & Discuss (7) JAMB 1990
23
The octane number of a fuel whose performance is the same as that of a mixture of 55 g of 2,2,4- trimethly pentane and 45 g of n-heptane is ?
  • A. 45
  • B. 55
  • C. 80
  • D. 100
View Answer & Discuss (7) JAMB 1990
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24
Which of the following is formed when maltose reacts with concentrated tetraoxosulphate (VI) acid ?
  • A. Carbon (IV) oxide
  • B. Coal tar
  • C. Charcoal
  • D. Toxic fumes
View Answer & Discuss (3) JAMB 1990
25

If a gas occupies a container of volume 146 cm3 at 18°C and 0.971 atm, its volume in cm3 at s.t.p is?

  • A. 133
  • B. 146
  • C. 266
  • D. 292
View Answer & Discuss (16) JAMB 1990
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