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Chemistry · PYQ NEET UG 2020

हिन्दी

Identify the CORRECT statement from the following:

  1. A
    Blister copper has blistered appearance due to evolution of \( \mathrm{CO}_2 \).
  2. B
    Vapour phase refining is carried out for Nickel by Van Arkel method.
  3. C
    Pig iron can be moulded into a variety of shapes.
  4. D
    Wrought iron is impure iron with \( 4 \% \) carbon.

Correct answer · Option A

Blister copper has blistered appearance due to evolution of \( \mathrm{CO}_2 \).

Explanation

Blister copper gets its blistered appearance due to the evolution of \( \mathrm{SO}_2 \) gas during the conversion of copper matte. Nickel is refined by Mond's process. Pig iron is brittle and cannot be moulded easily (cast iron is used for moulding). Wrought iron is the purest form of iron.
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