Electrolysis - Jamb Chemistry Past Questions and Answers

Question 66:

• JAMB 2003

Which of the following is an electrolyte?

A. Alcohol
B. Sodium acetate solution
C. Solid potassium hydroxide
D. Mercury

Question 67:

• JAMB 2004

In the electrolysis of brine, the anode is

A. Platinum
B. Copper
C. Zinc
D. Carbon

Question 68:

• JAMB 2004

The mass of silver deposited when a current of 10a is passed through a solution of silver salt for 4830s is
[Ag = 108, F = 96500 c mol^-1]

A. 108.0g
B. 54.0g
C. 27.0g
D. 13.5gq

Question 69:

• JAMB 2005

Which of the following ions require the largest quantity of electricity for discharge at an electrode?

A. 4.0 moles of Cl^-
B. 3.0 moles of Na⁺
C. 2.5 moles of Cu²⁺
D. 2.0 moles of Al³⁺

Question 70:

• JAMB 2006

Zinc and carbon rods are used as anode and cathode respectively in a

A. Leclanche cell
B. Lead accumulator
C. Daniel cell
D. Voltaic cell