Match List I with List II

Choose the correct answer from the options given below:

A-II, B-III, C-IV, D-I

The correct answer is option option 3. A-II, B-III, C-IV, D-I.

A. Van Arkel Method: This method is indeed used for the purification of titanium. In the Van Arkel method, titanium tetrachloride (\(TiCl_4\)) is reacted with a more reactive metal, typically sodium or magnesium, to form a volatile metal halide, which is then decomposed to obtain pure titanium metal.

B. Zone Refining: I apologize for the confusion in my previous response. Zone refining is indeed used for the purification of germanium. In the zone refining process, a molten zone is passed through a rod of impure material (such as germanium), and as the zone moves through the rod, impurities are selectively moved to one end, resulting in a higher purity at the other end.

C. Mond Process: This process is indeed used for the purification of nickel. In the Mond process, impure nickel is heated in the presence of carbon monoxide to form volatile nickel tetracarbonyl (\(Ni(CO)_4\)), which is then decomposed to obtain pure nickel.

D. Electrolytic refining: This process is typically used for the purification of copper. In electrolytic refining, impure copper is used as the anode and pure copper is used as the cathode in an electrolytic cell. When an electric current is passed through the cell, copper ions from the impure anode migrate to the cathode and are deposited as pure copper.

So, the correct match is 3. A-II, B-III, C-IV, D-I.