Chemistry 2015 WAEC Past Questions

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Which of the following products of biotechnology can be used as a fuel in place of petrol?

A. Butane
B. Ethanol
C. Ethene
D. Propanol

View Answer & Discuss (6) WAEC 2015

Which of the following polymers in thermosetting?

A. Bakelite
B. Nylon
C. Polypropene
D. Polystyrene

View Answer & Discuss (1) WAEC 2015

Which of the following gases is monoatomic?

A. Argon
B. Chlorine
C. Nitrogen
D. Oxygen

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The correct balanced equation for the reaction between aluminium metal and hot concentrated tetraoxosulphate(VI)acid is ?

A. 2AI_(s) + 6H₂SO₄₍₁₎ \(\to\) AI2(SO₄)_3(aq) + 6H₂O(1) + 3SO_2(g)
B. 2AI_(s) + 3H₂SO₄₍₁₎ \(\to\) AI₂(SO₄)_3(aq) + 6H₂O(1) + 3SO_2(g)
C. 2AI_(s) + 4H₂SO₄₍₁₎ \(\to\) AI₂(SO₄)_3(aq) + 8H₂O(1) + 3SO_2(g)
D. 2AI_(s) + 5H₂SO₄₍₁₎ \(\to\) AI₂(SO₄)_3(aq) + 8H₂O(1) + 3SO_2(g)

View Answer & Discuss (1) WAEC 2015

Consider the following equilibrium system:
2SO_2(g) + O_2(g) \(\rightleftharpoons\) 2SO_3(g)

The addition of more O_2(g) to the system will shift the equilibrium position to the

A. Right leading to the production of more SO_3(g)
B. Right leading to the production of more SO_2(g)
C. Left leading to the production of more SO_2(g)
D. Left leading to the production of more SO_3(g)

View Answer & Discuss (1) WAEC 2015

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