Question

Complete the table:

	Method of preparation & Content
Pig Iron	...........i................
Cast Iron	...........ii...............
Wrought Iron	.........iii...............
Steel	............iv...........

Answer 1

i. Obtained from Blast Furnace contains $4$ % Carbon and other impurities like manganese silicon , phosphorous , etc.
ii. Pig iron mixed with scrap iron and coke melted in a special furnace contains $3$ % carbon.
iii. Made by purifying cast iron.
iv. Prepared by varying the amount of carbon from $0.1$ to $1.5$ %.