Post Utme University of Calabar Chemistry Past Questions and Answers

Question 6:

Separation of mixtures of solids by physioal methods can be based on differences in the following except ____________

A. Melting point
B. Solubility
C. Particle size
D. Molar mass

Question 7:

The following are major gaseous pollutants except ____________

A. \(CO\)
B. \(CO _{2}\)
C. \(SO _{2}\)
D. CFC

Question 8:

The ration of reactants to products is \(1: 3: 2\) in the reaction represented by the equation below: \(N_{2 \text { igi }}\) + \(3 H _{2(9)} \rightarrow 2 NH _{3(9)}\) which of the following laws is demonstrated by this?

A. Boyle's law
B. Law of multiple proportion
C. Gay Lussac's law
D. Law of constant composition

Question 9:

PH of a \(0.0001 M\) acid is ____________

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

Question 10:

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How many isomers of the compound above can be obtained?

A. 5
B. 4
C. 3
D. 2