Halogens - Jamb Chemistry Past Questions and Answers

Question 1:

• JAMB 2019

The oxidation state of chlorine in potassium chlorate is

A. +1
B. +2
C. +3
D. +5
E. +7

Question 2:

• JAMB 2019

Hypochlorous acid is used as a bleach because

A. It is a strong acid
B. It yields chlorine readily in pure water
C. It is an oxidising agent
D. It is a weak acid
E. It is a reducing agent

Question 3:

• JAMB 1978

The oxidation state of chlorine in potassium chlorate is

A. +1
B. +2
C. +3
D. +5
E. +7

Question 4:

• JAMB 1978

Hypochlorous acid is used as a bleach because

A. It is a strong acid
B. It yields chlorine readily in pure water
C. It is an oxidising agent
D. It is a weak acid
E. It is a reducing agent