Question

7. In the electrolysis of molten silver chloride, which one of thefollowing species is reduced?
A. chloride ion
B. silver ion
C. water
D. oxygen
E. hydrogen

8. Which of the following metals is used commercially as a thincoating on steel to prevent corrosion?
A. Zn
B. Fe
C. Mo
D. Ni
E. Cu

9. Corrosion of steel involves the

A. reduction of iron
B. reduction of water
C. oxidation of sulfur
D. oxidation of iron
E. oxidation of oxygen


10. The corrosion of aluminum metal is extremely slow because
A. the process does not have a large potential
B. the process is prevented by the oxidation of iron metal whichcoats the aluminum
C. the formation of a layer of aluminum oxide on the surface of themetal slows further oxidation
D. aluminum metal cannot be oxidized