Chemistry 2015 WAEC Past Questions

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The shape of a graphite crystal is

A. Tetrahedral
B. Pyramidal
C. Octahedral
D. Hexagonal

View Answer & Discuss WAEC 2015

Which of the following oxides is ionic?

A. P₄O₁₀
B. MgO
C. Al₂O₃
D. SO₂

View Answer & Discuss (5) WAEC 2015

Which of the following substances when boiled with aqueous solution of sodium hydroxide would be hydrolyzed?

i. Protein ii. Fat iii. Polythene

A. i
B. ii
C. i and ii
D. ii and iii

View Answer & Discuss (1) WAEC 2015

Which of the following trioxonitrate(V) salts would decompose on heating to form a metal?

A. Cu(NO₃)₂
B. AgNO₃
C. Pb(NO₃)₂
D. KNO₃

View Answer & Discuss (1) WAEC 2015

Consider the following reaction equation:
C2H4(g) + 3O2(g) \(\to\) 2CO2(g) + 2H2O(g)

The volume of CO2(g) produced at s.t.p when 0.05 moles of C2H4(g) was burnt in O2(g) is
[Molar Volume of gas = 22.4dm3

A. 1.12dm³
B. 2.24dm³
C. 3.72dm³
D. 4.48dm³

View Answer & Discuss (4) WAEC 2015

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