Identify the correct statement from the following:

7 2020 General Principles and Processes of Isolation of ElementsExtraction of Metals – Copper and Iron; Refining Medium
Identify the correct statement from the following:
A Blister copper has blistered appearance due to evolution of $CO_2$.
B Vapour phase refining is carried out for Nickel by Van Arkel method.
C Pig iron can be moulded into a variety of shapes.
D Wrought iron is impure iron with 4% carbon.

Detailed Solution

The iron obtained from the blast furnace contains about 4% carbon and many impurities (S, P, Si, Mn) in smaller amounts. This is pig iron, which can be cast into a variety of shapes – correct. (Blister copper's appearance is due to evolution of $SO_2$; Van Arkel method is used for Zr/Ti while Ni is refined by Mond's process; wrought iron is the purest commercial iron.)

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