Question

The following image shows rusting of iron. What type of change is this?

• A. reversible
• B. irreversible
• C. slow and reversible
• D. slow and irreversible

Answer 1

The correct option is D slow and irreversible

An iron nail develops a reddish brown coat when it comes in contact with air and water. This coat is known as rust and the process is known as rusting of iron. We cannot get iron back from this rust. Hence this process is irreversible. Rusting is also a slow process because it takes sufficiently large amount of time for the formation of rust on the iron nail.