question_answer 80)

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

Column I	Column II
A. Blisterred Cu B. Blast  furnace C. Reverberatory D. Hall ? Heroult process	1. Aluminium 2.
	3. Iron 4. 5.

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

Answer:

                      (a) A.®(2)   B.®(3)  C.®(4)   D.®(1) A. Blisterred Cu can be prepared by means of following chemical reaction                 B. Iron is extracted by using blast furnace. C. In reverberator/ furnace formation of slag occurs as                                   D. Hall-Heroult process is used for extraction of aluminium.