Post Utme Chemistry Past Questions and Answers

Question 246:

The basicity of \(\mathrm{CH}_{3} \mathrm{COOH}\) is ____________

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

Question 247:

Ethanol concentrated tetraoxosulphate (VI) acid at a temperature above \(170^{\circ} \mathrm{C}\) to form

A. Ethanone
B. Ethanal
C. Ethyne
D. Ethene

Question 248:

The type of bonding in iodine molecule is ____________

A. Dative
B. Covalent
C. Coordinate
D. Electrovalent

Question 249:

The acid used in electrolysis of water is ____________

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

Question 250:

In the diagram above, which of the curves represents the evolution of oxygen with time in the equation \(2 \mathrm{KClO}_{3(s)}\left(\cdots, 2 \mathrm{KCl}_{(s)}+3 \mathrm{O}_{2(g)}
ight.\) ?

A. \(x\)
B. \(Y\)
C. \(Z\)
D. \(\mathrm{R}\)