Observe the given process and select the correct option.

Options

A. The given process becomes faster when humidity is high in the atmosphere.
B. The process represents a reversible chemical change.
C. The change can be reversed by galvanisation.
D. None of these

Answer

A

Explanation

Rusting of iron takes place in the presence of moisture and oxygen. It is a slow, chemical and irreversible change. By galvanisation (by placing layer of zinc on it), we can stop it but cannot get original substance back.