1- What conditions are required for rusting to take place in an eques solution?
a) Water only
b) Oxygen only
c) Water and oxygen
d) Water and carbon dioxide
2-Corrosion occurs because the metal need to returns to their:
a) metastable compounds
b) unstable compounds
c) pure forms
d) stable compounds
3- A positive cell potential is significant of:
a) cathode and anode cannot be a spontaneous generator of electrical power.
b) cathode and anode can be a spontaneous generator of electrical power.
c) just cathode cannot be a spontaneous generator of electrical power.
just anode cannot be a spontaneous generator of electrical power