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Chemistry 1986 JAMB Past Questions

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26
Which of the following is NOT correct test for the named organic compound in each case?
  • A. Butanoic acid solution gives effervescence with Na2CO3 solution
  • B. Glucose when reacted with Na2CrO4 at 0°C will show immediate discharge of colour
  • C. When but-2-ene is reacted with dilute solution of KMnO4 the purple colour of KMnO is discharged readily even room temperature
  • D. When butan-2-ol is boiled with butanoic acid with a drop of concentrated H2SO4 a sweet smelling liquid is produced
View Answer & Discuss (4) JAMB 1986
27

Which of the following is used as an 'anti-knock' in automobile engines?

  • A. Tetramethyl silane
  • B. Lead tetra-ethyl
  • C. Glycerol
  • D. n-heptane
View Answer & Discuss (3) JAMB 1986
28

What reaction takes place when palm-oil is added to potash and foam are observed?

  • A. Neutralization
  • B. Saponification
  • C. Esterification
  • D. Salting-out
View Answer & Discuss (3) JAMB 1986
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29
When ethanol is heated with excess concentrated sulphuric acid, the ethanol is?
  • A. oxidized to ethene
  • B. polymerized to polyethene
  • C. dehydrated to ethene
  • D. dehydrated to ethyne
View Answer & Discuss (2) JAMB 1986
30
Which of the following compounds is NOT formed by the action of chlorine on methane?
  • A. CH3CI
  • B. C2H5CI
  • C. CH2CI2
  • D. CHCI3
View Answer & Discuss (5) JAMB 1986
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