Question

The percentage of carbon in cast iron varies from:

• A. 0.5 to 1
• B. 0.1 to 0.5
• C. 1 to 1.7
• D. 1.7 to 4.5

Answer 1

The correct option is D 1.7 to 4.5

The percentage of carbon in cast iron varies from 1.7 to 4.5.
Usually, it contains around 4% $C$. It is hard and brittle.