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Chemistry 2002 WAEC Past Questions

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26

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 (11) WAEC 2002
27
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
28
Which of the following substances increases in mass when heated in air?
  • A. Sodium chloride
  • B. lodine crystals
  • C. Magnesium ribbon
  • D. Copper (ll) oxide
View Answer & Discuss WAEC 2002
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29
Calculate the mass of sodium hydroxide in 5.00 dm3 of a 0.125 mol dm-3 solution. [NaOH = 40 g mol-1]
  • A. 0.0156 g
  • B. 0.625 g
  • C. 1.00 g
  • D. 25.0 g
View Answer & Discuss WAEC 2002
30
Which of the following salt solutions will have a pH greater than 7?
  • A. NaCI(aq)
  • B. Na2CO3(aq)
  • C. Na2SO4(aq)
  • D. NaHSO4(aq)
View Answer & Discuss (4) WAEC 2002
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709