Explain the corrosive action of acids and alkalies. Give examples.

Explanation

All acids and some alkalies show corrosive action on skin as they form painful blisters when they come in contact with skin.
Example: `H_(2)SO_(4)` absorbs water from skin tissues and `HNO_(3)` reacts with skin proteins to form a pulp like mass.
NaOH and KOH are called caustic soda and caustic potash due to their causticising action on skin.