Post Utme Chemistry Past Questions and Answers

Question 346:

The maximum number of electrons that can be accommodated in the shell having the principal quantum number 3 is ____________

A. 3
B. 9
C. 18
D. 32

Question 347:

Methanol is obtained from wood by ____________

A. Esterification
B. Destructive dis illa ion
C. Combustion
D. Fractional distillation

Question 348:

Study carefully the reaction represented by the equation \(2 \mathrm{H}_{2} \mathrm{O}_{2} \quad \mathrm{O}_{2 \mathrm{an}}+2 \mathrm{H}_{20(1)}\)
Which of the following will not increase the reaction rate?

A. Heating the hydrogen peroxide
B. Adding a pinch of MnO, to the reactant.
C. Increasing the concentration of the \(\mathrm{H}_{2} \mathrm{O}_{4}\)
D. Adding water to the reactant.

Question 349:

Which of the following processes is a physical reaction?

A. Electrolysis
B. Hydrolysis
C. Allotropic change
D. Neutralization

Question 350:

The following acids are monobasic except ____________

A. Methanoicacid
B. Dioxonitrate (III) acid
C. Ethanedioicacid
D. Oxochlorate I) acid