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2017 JAMB CHEMISTRY PAST QUESTIONS

1.The general formula of alkanones is
  • A. RCHO
  • B. RCOR’
  • C. RCOOH
  • D. RCOOR

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2,The constituent common to duralumin and alnico is
  • A. Co
  • B. Mn
  • C. Al
  • D. Mg

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3.The shape of the S-orbital is
  • A. elliptical
  • B. spiral
  • C. circular
  • D. spherical

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4.Aluminium hydroxide is used in the dyeing industry as a
  • A. dye
  • B. dispersant
  • C. salt
  • D. mordant

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5.The tincture of iodine means iodine dissolved in
  • A. ethanol
  • B. bromine chloride
  • C. chlorine water
  • D. water

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6.Temporary hard water is formed when rain water containing dissolved carbon(IV) oxide flows over deposits of
  • A. CaCO3
  • B. Na2CO3
  • C. Na2SO4
  • D. CaSO4

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7.The acid anhydride that will produce weak acid in water is
  • A. SO3
  • B. NO2
  • C. SO2
  • D. CO2

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8. The process that occurs when two equivalent forms of a compound are in equilibrium is
  • A. Isotopy
  • B. Resonance
  • C. Isomerism
  • D. Reforming

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9. In the laboratory preparation of ethyl ethanoate, the water present in the mixture is removed using a solution of
  • A. an hydrous CaCl4
  • B. concentrated NaCO4
  • C. dilute NaOH
  • D. concentrated H2SO4

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10.The constituent of air necessary in the rusting process are
  • A. O2 and H2O
  • B. Ar and CO2
  • C. CO2 and H2O
  • D. O2 and CO2

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