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Chemistry Past Questions

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
1516
A gas that can behave as a reducing agent towards chlorine and as an oxidizing agent toward hydrogen sulphide is
  • A. O2
  • B. NO
  • C. SO2
  • D. NH3
  • E. CO2
View Answer & Discuss (4) JAMB 1983
1517
Which of the following solutions will give a white precipitate with barium chloride solution and a green flame test?
  • A. Na2SO4
  • B. CuSO4
  • C. CaSO4
  • D. CaCI2
  • E. (NH4)2SO4
View Answer & Discuss (3) JAMB 1983
1518
The mass of an atom is determined by
  • A. its ionization potential
  • B. its electrochemical potential
  • C. the number of protons and electrons
  • D. the number of neutrons and protons
  • E. the number of neutrons and electrons
View Answer & Discuss (4) JAMB 1983
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1519
Which of the following is a neutralization reaction?
  • A. Addition of sodium chloride solution to potassium chloride solution
  • B. Addition of trioxonitrate (V) acid (nitric acid) to distilled water
  • C. Addition of trioxonitrate (V) acid (nitric acid) to tetraoxosulphate (IV) acid (sulphuric acid)
  • D. Addition of trioxonitrate (V) acid (nitric acid) to potassium trioxonitrate (V) (potassium nitrate) solution
  • E. Addition of trioxonitrate (V) acid (nitric acid) to potassium hydroxide solution
View Answer & Discuss (6) JAMB 1983
1520

A jet plane carrying 3,000 kg of ethane burns off all the gas forming water and carbondioxide. if all the carbondioxide is expelled and all the water formed is condensed and kept on board the plane, then the gain in weight is

  • A. 1,800 kg
  • B. 900 kg
  • C. 600 kg
  • D. 2, 400 kg
  • E. 1, 200 kg
View Answer & Discuss (17) JAMB 1983
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