Post Utme Chemistry Past Questions and Answers

Question 701:

A metal which can be used as sacrificial anode for preventing corrosion of a length of iron pipe is ____________

A. Copper
B. Magnesium
C. Silver
D. Lead

Question 702:

Which of the following as boiling water changes to steam?

A. Temperature of the system
B. Degree of disorder of the steam
C. Number of molecules
D. Activation energy

Question 703:

Which of the following is stable to hear?

A. \(\mathrm{NaHCO}_{3}\)
B. \((\mathrm{NH} 4)_{2} \mathrm{SO}_{4}\)
C. \(\mathrm{AgNO}_{3}\)
D. \(\mathrm{K}_{2} \mathrm{CO}_{3}\)

Question 704:

Which of the following will precipitate in diluted \(\mathrm{HCL}\) ?

A. \(\mathrm{ZnS}\)
B. \(\mathrm{Na}_{2} \mathrm{~S}\)
C. FeS
D. Cus

Question 705:

Which of the following does NOT contain aluminium as a component?

A. Over-head cables
B. Duralumin
C. Container for caustic soda
D. Container for trioxonitrate \((V)\) acid