Metals and their compounds - Jamb Chemistry Past Questions and Answers

Question 116:

• JAMB 2016

In an electrochemical cell, polarization is caused by

A. Oxygen
B. Hydrogen
C. Tetraoxosulphate(IV) acid
D. Chlorine

Question 117:

• JAMB 2016

The condition required for corrosion to take place is the presence of

A. Oxygen and Carbon (IV) oxide
B. Water and Oxygen
C. Water and Carbon (IV) oxide and Oxygen
D. Water and Carbon (IV) oxide

Question 118:

• JAMB 2016

Cast iron is used in making

A. Chains and agricultural implements
B. Iron sheets and retort stand
C. Nails and iron rods
D. Stoves and cookers

Question 119:

• JAMB 2016

Which of the following is not an alkali?

A. Ca(OH)₂
B. NH₃
C. NaOH
D. Al(OH)₃

Question 120:

• JAMB 2016

The metal whose ore can be concentrated by passing it through a magnetic separator is

A. Zn
B. Sn
C. Cn
D. Ca