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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 $Al _2 O _3$ is mixed with $Na _3 AlF _6$ 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:
Statement $I$ is incorrect but Statement $II$ is correct
Both Statement $I$ and Statement $II$ are incorrect
Statement $I$ is correct but Statement $II$ is incorrect
Both Statement $I$ and Statement $II$ are correct
Solution
In Electrolytic refining, the pure metal is used as cathode and impure metal is used as anode.$Na _3 AlF _6$ is added during electrolysis of $Al _2 O _3$ to lower the melting point and increase conductivity.
Similar Questions
Match list$-I$ with list$-II :$
| list$-I$ | list$-II$ |
|
$(a)$ Mercury |
$(i)$ Vapour phase refining |
| $(b)$ Copper | $(ii)$ Distillation refining |
| $(c)$ Silicon | $(iii)$ Electrolytic refining |
| $(d)$ Nickel | $(iv)$ Zone refining |
Choose the most appropriate answer from the option given below:
