Post Utme Chemistry Past Questions and Answers

Question 136:

Catalyst is important in chemical industry in that

A. It affects the purity of the products
B. It affects the quantity of the products
C. It increases the time for reaching equilibrium
D. Bond breaking is slowed down

Question 137:

alkanoic acid has a molecular mass of 88. Name the acid.
( \(\mathrm{C}=\) \(12,016, \mathrm{H}=1)\)

A. Propanoic acid
B. Butanoic acid
C. Pentanoic acid
D. But-2-ionic acid

Question 138:

Ethyne undergoes the following reactions except

A. Polymerization
B. Addition
C. Substitution
D. Etherification

Question 139:

Which of the following is a mixture?

A. Sodium Chloride
B. Sea water
C. Iron fillings
D. Granulated sugar

Question 140:

Two elements, \(X\) and \(Y\), have atomic numbers \(\mathrm{E}\) and 13 respectively. The formula for the possible compound found between \(X\) and \(Y\) is ____________

A. \(Y_{2} X_{2}\)
B. \(X Y_{2}\)
C. \(X_{3} Y_{2}\)
D. \(X_{2} Y_{3}\)