Which of the following is an example of corrosion?

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

All of the above

Iron rust

The green coating on copper

The black coating on silver

answer is D.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

All of the above

Corrosion occurs when a refined metal undergoes natural processes, converting it into a more stable oxide. Examples include the rusting of iron, the black coating on silver, and the green coating on copper.

Detailed Explanation:

What is Corrosion?
- Corrosion is the gradual deterioration of materials (usually metals) through chemical or electrochemical reactions with their environment.
- It typically occurs when metals react with oxygen, moisture, or other environmental factors, leading to the formation of oxides or other compounds.
Examples of Corrosion:
- Rusting of Iron:
  - Iron reacts with oxygen and moisture in the air to form iron oxide (rust), weakening the metal.
- Black Coating on Silver:
  - Silver reacts with sulfur compounds in the air, forming silver sulfide, which appears as a black tarnish.
- Green Coating on Copper:
  - Copper reacts with carbon dioxide and moisture, forming copper carbonate (verdigris), which appears as a green layer.