Explain briefly electrolytic refining method.

1. What is the difference between a mineral and an ore ?
2. Differentiate between roasting and calcinations process in metallurgy.
3. What is an alloy ? Name the alloy which has iron, nickel and chromium as its
constituent. What is the chief use of this alloy ?
4. Explain any two ways to prevent rusting of iron.
5. Explain briefly electrolytic refining method.

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