Multiple choice

Which of the following statements is/are incorrect?

  1. CuCl2 is used as a catalyst in the manufacture of ammonia by Haber process.
  2. CuCl exhibits blue colour in an aqueous solution.
  3. Fractional crystallisation of metals to get the purest form is known as zone-refining.

  1. Only 1

  2. Only 2

  3. Only 3

  4. 1 and 2

  5. 2 and 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct answer. CuCl2 is used as a catalyst in Deacon process for the preparation of Cl2 from HCl. CuCl, in an aqueous solution, forms Cu ions, which possess no colour due to the presence of completely filled d-orbitals.

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