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Chemistry JAMB Past Questions

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1046

The products of the reaction between dilute sulphuric acid and sodium thiosulphate crystals are?

  • A. Na2SO4 + SO2 + O2 + H2O
  • B. Na2SO3 + SO3 + O2 + H2O
  • C. Na2SO4 + SO2 + S + H2O
  • D. Na2SO4 + SO3 + S + H2O
  • E. Na2SO4 + SO2 + H2O only
View Answer & Discuss (9) JAMB 1981
1047
Which of the following is NOT a true statement of the kinetic Theory of Gases?
  • A. The molecules move at random
  • B. The size of molecules is negligble as compared with the volume of gas
  • C. The molecular collisions are perfectly elastic
  • D. Every molecule has the same kinetic energy at a particular temperature
  • E. The average kinetic energy is proportional to the absolute temperature of the gas
View Answer & Discuss (3) JAMB 1981
1048
The electronic configuration of elements X and Y are X = 2, 8, 6; Y = 2, 8, 7. The bond in the compound formed by X and Y is expected to be?
  • A. ionic
  • B. covalent
  • C. dative covalent
  • D. metallic
  • E. none of the above
View Answer & Discuss (8) JAMB 1981
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1049
5cm3 of a saturated solution of sodium chloride at 30°C gave, on careful evaporation, 1.95g of solid salt. The solubility of sodium chloride at 30°C?

(Na = 23, Cl = 35.5)
  • A. 5.00 mole dm3
  • B. 5.67 mole dm3
  • C. 6.00 mole dm3
  • D. 6.67 mole dm3
  • E. 7.00 mole dm3
View Answer & Discuss (8) JAMB 1981
1050

In the extraction of iron, which of the following reactions does NOT take place in the blast furnace?

  • A. CO2 + C → 2CO
  • B. 2Fe2O3 + 3C → 4Fe + 3CO2
  • C. Fe2O3 + 3C → 2Fe + 3CO2
  • D. CaCO3 → CaO + CO2
  • E. CaO + SiO2 → CaSiO3
View Answer & Discuss (18) JAMB 1981
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts