Electrochemistr...

In corrosion, a metal is ______ of electrons which --------- to form oxides and hydroxides.

The simplest method to prevent corrosion is

An electrochemical method to prevent corrosion is to provide a sacrificial electrode of another metal (like Mg, Zn, etc.) which corrodes itself but saves the object. A typical example is

Correct arrangement of Al, Cu, Fe, Mg and Zn in the order in which they displace each other from the solution of their salts is