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Chemistry WAEC Past Questions

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821
Which of the following molecules has a linear shape?
  • A. CH4
  • B. CO 2
  • C. H2S
  • D. NH 3
View Answer & Discuss (2) WAEC 2010
822
Which of the following molecules has a triple bond in its structure?
  • A. CH4
  • B. NH3
  • C. N2
  • D. O 2
View Answer & Discuss (2) WAEC 2010
823

The bonds in crystaline ammonium chloride are?

  • A. covalent and dative
  • B. ionic and covalent
  • C. ionic covalent and dative
  • D. ionic covalent and hydrogen bond
View Answer & Discuss (13) WAEC 2010
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824

Consider the neutralization reaction represented by the following equation: Na2CO3 + 2HNO 3 → 2NaNO3 + H2O + CO2 The stoichiometric ratio of acid to base is

  • A. 2:2
  • B. 2:1
  • C. 1:2
  • D. 1:1
View Answer & Discuss (7) WAEC 2010
825
A solution of sodium trioxocarbonate (IV) contains 10.6g in 250cm3 of solution. Calculate the concentration of the solution. [Na2CO3 = 106.0]
  • A. 0.4 mol dm-3
  • B. 1.0 mol dm-3
  • C. 10.6 mol dm-3
  • D. 25.0 mol dm-3
View Answer & Discuss (7) WAEC 2010
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