2024 Re-NEET ElectrochemistryCorrosion Medium Question 8 of 74 in Electrochemistry

From the following select the one which is not an example of corrosion.

A Rusting of iron object
B Production of hydrogen by electrolysis of water
C Tarnishing of silver
D Development of green coating on copper and bronze ornaments

The answer is B.

Solution

Rusting of iron, tarnishing of silver and the green coating (patina) on copper/bronze are all examples of corrosion (spontaneous electrochemical oxidation of metals). Electrolysis of water to produce hydrogen is a non-spontaneous, externally driven electrolytic process, not corrosion.

Concept Corrosion

Electrochemistry in past papers

74 questions from this chapter have appeared across 27 exam years.