Multiple choice

Which of the following statements is/are incorrect?

P. CuCl2 is used as a catalyst in the manufacture of ammonia by Haber process. Q. CuCl exhibits blue colour in aqueous solution.
R. Fractional crystallisation of metals to get maximum pure form is known as zone refining.

  1. Only P

  2. Only Q

  3. Only R

  4. P and Q

  5. Q and R
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This option is correct because iron (Fe) is used as a catalyst in the manufacture of ammonia by Haber process, while CuCl2 is used as a catalyst in Deacon process for the preparation of Cl2 from HCl. CuCl in aqueous solution form Cu+ ions, which possess no colour due to the presence of completely filled d orbitals.

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