Post Utme Chemistry Past Questions and Answers

Question 926:

Sodium hydroxide solution can be conveniently stored in a container made of _____________

A. Lead
B. Zinc
C. Aluminium
D. Copper

Question 927:

The energy change accompanying the addition of an electron to a gaseous atom is called _____________

A. First ionization energy
B. Second ionization energy
C. Electron affinity
D. Electron activity.

Question 928:

\(50 cm 3\) of hydrogen is sparked with \(20 cm 3\) of oxygen at \(100^{\circ} C\) and atmosphere. The total volume of the residual gases is _____________

A. \(50 cm ^{3}\)
B. \(10 cm ^{3}\)
C. \(40 cm ^{3}\)
D. \(30 cm ^{3}\)

Question 929:

The molarity of \(2 \%\) by weight of aqueous solution of \(H _{2} SO _{4}\) (molecular weight of 98 )

A. \(3.55\)
B. \(2.55\)
C. \(0.02\)
D. \(0.55\)

Question 930:

Alkanoic acids have volatility compared with alkanols because _____________

A. They are more polar than alkanol
B. They have two oxygen atoms while alkatiols have one
C. They form two hydrogen bonds while alkanols form one
D. They form hydrogen bonds while alkanols do not.