JEE Main · 2020 · 07 Jan 2020 · Shift 1 · General Principles and Processes of Isolation of Metals

The purest form of commercial iron is

(A)scrap iron and pig iron
(B)wrought iron✓ Correct
(C)cast iron
(D)pig iron

Answer: (B)

Solution

Wrought iron is the purest commercial form of iron, carrying under about

0.2%

carbon once most of the carbon and other impurities have been burned out of pig iron. Cast iron and pig iron both retain several percent carbon, so the purest form is wrought iron.

JEE Main · 2020 · 07 Jan 2020 · Shift 1 · Single correct option

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