Waec Chemistry 2015 Past Questions and Answers

Question 36:

• WAEC 2015

Which of the following statements about an electrochemical cell is correct? Oxidation occurs

A. At the anode
B. At the cathode
C. Through the salt bridge
D. In the aqueous solution

Question 37:

• WAEC 2015

Consider the following reaction equation:
CuO_(s) + H_2(g) \(\to\) Cu_(s) + H₂O₍₁₎
Which substance is oxidized?

A. Cu
B. CuO
C. H₂
D. H₂O

Question 38:

• WAEC 2015

Which of the following metals is the strongest reducing agent?

A. Sodium
B. Silver
C. Potassium
D. Copper

Question 39:

• WAEC 2015

The complete hydrogenation of benzene gives

A. Cyclohexene
B. Cyclohexane
C. Hexene
D. Hexane

Question 40:

• WAEC 2015

A compound has an empirical formular CH₂O and molecular mass of 90.
[H = 1.00, C = 12.0, O = 16.0]

A. C4H10O2
B. C3H10O2
C. C3H6O3
D. C2H2O4