Post Utme Chemistry Past Questions and Answers

Question 646:

The major source of oxides of nitrogen is from the burning of ____________

A. Coal
B. Wood
C. Fuel
D. Chlorofluorocarbons

Question 647:

The acid used in electrolysis of water is dilute ____________

A. \(\mathrm{HNO}_{3}\)
B. \(\mathrm{CH}_{3} \mathrm{COOH}\)
C. \(\mathrm{H}_{2} \mathrm{SO}_{4}\)
D. \(\mathrm{HCl}\)

Question 648:

What volume of \(1.5 \mathrm{M}\) solution of \(\mathrm{KOH}\) would contain \(0.045\) moles?

A. \(67.50 \mathrm{~cm}^{3}\)
B. \(30.00 \mathrm{~cm}^{3}\)
C. \(6.75 \mathrm{~cm}^{3}\)
D. \(3.00 \mathrm{~cm}^{3}\)

Question 649:

The salt formed from a reaction between citric acid and sodium hydroxide In solution will be ____________

A. Acidic
B. Basic
C. Complex
D. Neutral

Question 650:

Which of the following metals is purified commercially by electrolysis is?

A. \(\mathrm{Zn}\)
B. \(\mathrm{Fe}\)
C. \(\mathrm{Sn}\)
D. \(\mathrm{Cu}\)