In liquation process used for tin $\left(\mathrm{Sn}\right)$, the metal

Match List I with List II.

Given below are two statements:-

Statement I:- In froth floatation method a rotating paddle agitates the mixture to drive air out of it.

Statement II:- Iron pyrites are generally avoided for extraction of iron due to environmental reasons.

In the light of the above statements, choose the correct answer from the options given below:-

Given below are two statements:

Statement I: During Electrolytic refining, the pure metal is made to act as anode and its impure metallic form is used as cathode.
Statement II: During the Hall-Heroult electrolysis process, purified ${\mathrm{Al}}_2{\mathrm{O}}_3$ is mixed with ${\mathrm{Na}}_3{\mathrm{AlF}}_6$ to lower the melting point of the mixture.
In the light of the above statements, choose the most appropriate answer from the options given below: