Electrolysis - Chemistry Jamb Past Questions and Answers

Question 101 :

• JAMB 2018

A quantity of electricity liberates 3.6g of Silver from its salt. What mass of aluminium Will be liberated from its salt by the same quantity of electricity? [Al = 27, Ag = 108].

A. 2.7g
B. 1.2g
C. 0.9g
D. 0.3g

Question 102 :

• JAMB 2018

Diamond is a bad conductor of electricity because its bonding electrons are used in

A. Crystal lattice formation
B. Covalent bond formation
C. Metallic bond formation
D. Coordinate bond formation

Question 103 :

• JAMB 2018

What mass of Cu would be produced by the cathodic reduction of Cu\(^{2+}\) when 1.60A of current passes through a solution of CuSO\(_4\) for 1 hour. (F=96500Cmol\(^{-1}\) , Cu=64)

A. 7.64g
B. 3.82g
C. 1.91g
D. 0.96g

Question 104 :

• JAMB 2018

The figure above shows the electrolysis of molten sodium chloride. Z is the

A. Anode where the Cl\(^-\) ions are oxidized
B. Cathode where the Cl\(^-\) ions are reduced
C. Anode where the Na\(^+\) ions are reduced
D. Cathode where the Na\(^+\) ions are oxidized

Question 105 :

• JAMB 2018

The knowledge of half-life can be used to

A. Create an element
B. Detect an element
C. Split an element
D. Irradiate an element