Which method is used for refining Zr and Ti? Explain with equation.

2

(a)

What should be the consideration during extraction of metals by electrochemical method?

2

(a)

What is the role of flux in metallurgical processes?

2

(a)

How are metals used as semiconductors refined?What is the principle of the method used?

2

(a)

How is copper extracted from a low grade ore of it?

2

(a)