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Chemistry WAEC 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
441

The gas evolved when dilute tetraoxosulphate (VI) acid reacts with sodium hydrogen trioxocarbonate (IV) is

  • A. hydrogen
  • B. oxygen
  • C. carbon (IV) oxide
  • D. sulphur (VI) oxide
View Answer & Discuss (3) WAEC 2000
442

If a solution has a pH of 2, it can be concluded that it

  • A. is a weak electrolyte
  • B. has hyrogen ion concentration of 0.2 mol dm-3
  • C. is twice as acidic as a solution of pH 1,
  • D. will produce effervescence with magnesium ribbon
View Answer & Discuss (1) WAEC 2000
443

Which of the following salts is stable to heat?

  • A. K2CO3
  • B. (NH4)2SO4
  • C. NaHCO 3
  • D. AgNO3
View Answer & Discuss WAEC 2000
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444

Which of the following compounds dissolves in water to give an alkaline solution?

  • A. Ammonium chloride
  • B. Sodium chloride
  • C. Sulphur (IV) oxide
  • D. Potassium oxide
View Answer & Discuss (4) WAEC 2000
445

Which of the following salts is an acid salt?

  • A. MgSO 37H 2O
  • B. (NH 4) 2CO
  • C. KHSO4
  • D. CH3COONa
View Answer & Discuss WAEC 2000
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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