Post Utme Federal University of Technology, Akure Chemistry Past Questions and Answers

Question 6:

The most suitable method for preparing lead (II) chloride is by

A. Actiōn of dilute HCl on \(\mathrm{PbSO}\)
B. Action of dilute \(\mathrm{HCl}\) on lead
C. Mixing aqueous solutions of \(\mathrm{Pb}(\mathrm{NO})\) and \(\mathrm{NaCl}\)
D. Bubbling chlorine into a solution of \(\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}\)

Question 7:

Sodium chloride cannot conduct electricity in the solid state because it ____________

A. Is a normal salt.
B. Is highly soluble in water.
C. Is an electrovalent compound.
D. Does not contain mobile ions.

Question 8:

Alums are classified as ____________

A. Simple salts.
B. Acidsat5
C. Anhydrous salts.
D. Double salts.

Question 9:

\(\mathrm{H}_{1} \mathrm{O}^{\prime}\), we \(+\mathrm{OH} \mathrm{H}_{\mathrm{w}} \mathrm{ZH}_{2} \mathrm{O}, \mathrm{O}_{3}\) ).
The heat change accompanying the process represented by this equation is the heat of ____________

A. Neutralization
B. Formation
C. Solution
D. Dilution

Question 10:

In which of the following processesare larger molecules broken down into smaller molecules?

A. Vulcanization of rubbe
B. Hydrogenation of palm oil
C. Hydrolysis of starch
D. Polymerization