Question

The molten iron has 4% carbon and other impurities like manganese, silicon, phosphorus, etc. This is called:

• A. Wrought iron
• B. Pig iron
• C. Cast iron
• D. Raw iron

Answer 1

The correct option is B Pig iron

The molten iron has 4% carbon and other impurities like manganese, silicon, phosphorus, etc. This is called pig iron.
Cast iron contains nearly 3% of carbon.
Wrought iron is the purest form of iron which contain 0.2-0.5% of carbon and traces of phosphorus and silicon.