Question

5. Metal always found in free state is:
(a) Gold
(b) Silver
(c) Copper
(d) Sodium
6. A process employed for the concentration of sulphide ore is
(a) Froth floatation
(b) Roasting
(c) electrolysis
(d) bessemerisation​

Answer 1

Answer:

5. a) Gold

6. a) Froth floating

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Answer 2

Answer:

1. gold silver copper all the three occur in free State

2. forth flotation

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