question_answer 77)

    Match the items of Column I with the items of Column II and assign the correct code.

Column 1	Column 11
A. Coloured bands B. Impure metal to volatile complex C. Purification of Ge and Si D. Purification of mercury	1. Zone refining 2. Fractional distillation 3. Mond's process 4. Chromatography 5. Liquation

            Codes      A    B    C    D                      A    B    C   D (a) 1    2    4    5                    (b) 4    3    1    2 (c) 3   4   2   1                       (d) 5    4    3    2

Answer:

                    (b) A. ®(4)   B. ® (3)   C. ® (1)   D. ® (2) A. Coloured bands are observed in Chromatography. B. Impure metal is converted to volatile complex by using Mond's process. C. Purification of Ge ans Si are purified by zone refining method. D. Purification of mercury is done by fractional distillation.