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Chemistry Past Questions

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2706

Determine the mass of sulphur (IV) oxide obtained when 91.0g of oxygen reacts completely with sulphur according to the following equation: S(s) + O\(_2\)(g) → SO\(_2\)(g) [S = 32; O = 16]

  • A. 123g
  • B. 139g
  • C. 155g
  • D. 182g
View Answer & Discuss WAEC 2002
2707

The gas given off when NH4 Cl is heated with an alkali is

  • A. H2
  • B. Cl2
  • C. N2
  • D. NH3
View Answer & Discuss (4) WAEC 2002
2708
A major factor considered in selecting a suitable method for preparing a simple salt is its
  • A. crystalline form
  • B. melting point
  • C. reactivity with dilute acids
  • D. solubility in water
View Answer & Discuss (1) WAEC 2002
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2709

Which of following acids forms normal salts only?

  • A. Tetraoxosulphate (VI) acid
  • B. Trioxosulphate (IV) acid
  • C. Acetic acid
  • D. Tetraoxophosphate (V) acid
View Answer & Discuss (13) WAEC 2002
2710
A substance is said to be hygroscopic if it absorbs
  • A. water from the atmosphere to form a solution
  • B. heat from the surrounding
  • C. carbon (IV) oxide from the atmosphere
  • D. moisture from the atmosphere without dissolving
View Answer & Discuss (3) WAEC 2002
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts