question_answer 79)

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

	Column 1	Column 11
A.	Sapphire	1.
B.	Sphalerite	2.
C.	Depressant	3. Co
D.	Corundum	4. ZnS
		5.

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

Answer:

                    (a) A. ®{3)   B.®(4)   C.®(2)    D.®(1) A. Sapphire is a gemstone which contain Co. B. Molecular formula of sphalerite is ZnS. C. is used as a depressant in froth floatation method. D. Molecular formula of corundum is