Question

In impure metal corrosion takes place at
(a) Cathode
(b) Anode
(c) Both
(d) None​

Answer 1

The impure metal corossion takes place at anode.

Answer 2

Answer:

In impure metal, corrosion takes place at the anode

Explanation:

Corrosion can take place in impure metals due to the following factors available in the impure metal:

1) Anode

2) Cathode

These two factors are as a result of the impurities in the metal. Some of the metals will act as the anode and others as the cathode, depending on their galvanic potential.

3) Electrical contact

4) Electrolyte/ electrolyte medium

The corrosion takes place at the anode where oxidation takes place in the metal. In oxidation at the anode, the metal loses electrons to form metal compounds.