Post Utme University of Ibadan Chemistry Past Questions and Answers

Question 16:

The hydrolysis of \(\mathrm{NH}_{4} \mathrm{Cl}\) salt will give

A. Acidic solution
B. Neutral solution
C. Basic solution
D. Hot solution
E. All of the above

Question 17:

The pollutants that are likely to be present in an industrial environment are ____________

A. \(\mathrm{H}_{2} \mathrm{~S}_{,} \mathrm{SO}_{2}\) and oxides of nitrogen
B. \(\mathrm{NH}_{3}, \mathrm{HCl}\) and \(\mathrm{CO}\)
C. \(\mathrm{CO}_{2}, \mathrm{NH}_{3}\), and \(\mathrm{H}_{2} \mathrm{~S}\)
D. Dust, \(\mathrm{NO}\) and \(\mathrm{Cl}_{2}\)

Question 18:

What is the basicity of tetraoxosulphate (VI) acid?

A. 2
B. 1
C. 3
D. 4
E. O

Question 19:

Which of the following gases is the most dangerous pollutant?

A. Hydrogen sulphide
B. \(D\) Carbon (IV) oxide
C. Sulphur (IV) oxide
D. Carbon (II) oxide

Question 20:

Which of the following ions is a pollutant in drinking water even in trace amount?

A. \(\mathrm{Ca}^{2+}\)
B. \(B\) \(\mathrm{Hg}^{2+}\)
C. \(\mathrm{Mg}^{2+}\)
D. \(\mathrm{Fe}^{2+}\)