Oxidation and reduction - Jamb Chemistry Past Questions and Answers

Question 106:

• JAMB 2019

The reaction \(2H_2 S + SO_2 \to 3S + 2H_2 O\) is

A. Not a redox reaction because there is no oxidant in the reaction
B. Not a redox reaction because there is no reductant in the reaction
C. A redox reaction in which H\(_2\)S is the oxidant and SO\(_2\) is the reductant
D. A redox reaction in which SO\(_2\) is the oxidant and H\(_2\)S is the reductant

Question 107:

• JAMB 2020

What are the possible oxidation numbers of an element if its atomic number is 17?

A. -1 and 7
B. -1 and 6
C. -3 and 5
D. -2 and 6

Question 108:

• JAMB 2020

Proteins in acid solution undergo?

A. Substitution
B. Fermentation
C. Hydrolysis
D. Polymerisation

Question 109:

• JAMB 2021

The reactions involving simultaneous oxidation and reduction?

A. Automatic reactions
B. Alternate reactions
C. Reduction agency
D. Redox reactions