WAEC Past Questions and Answers - Page 1372

6,856.

Which of the following metals is the strongest reducing agent?

A.

Sodium

B.

Silver

C.

Potassium

D.

Copper

Correct answer is C

No explanation has been provided for this answer.

6,857.

Consider the following reaction equation:
CuO(s) + H2(g) \(\to\) Cu(s) + H2O(1)

Which substance is oxidized?

A.

Cu

B.

CuO

C.

H2

D.

H2O

Correct answer is C

No explanation has been provided for this answer.

6,858.

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

Correct answer is A

No explanation has been provided for this answer.

6,859.

A change in the temperature of a saturated solution disturbs the equilibrium between the

A.

Undissolved solute and the solvent

B.

Dissolved solute and the solvent

C.

Dissolved solute and the undissolved solute

D.

Dissolved solute and the solution

Correct answer is C

No explanation has been provided for this answer.

6,860.

A substance which dissolves readily in organic solvent would

A.

Be a covalent compound

B.

Have strong electrostatic forces of attraction

C.

have a high melting point

D.

Conduct electricity in molten state

Correct answer is A

No explanation has been provided for this answer.