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Statement-1: In the electrolytic reduction of ${Al}_{2} O_{3}$ cryolite lowers the melting point of the mixture and brings conductivity.
Statement-2: Cryolite is an ore of aluminium.

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Statement-1 is False, Statement-2 is True.

Statement-1 1s True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1

Statement-1 is True, Statement-2 is False.

Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-I

answer is B.

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Detailed Solution

Statement-1: Cryolite as impurity reduces the melting point of ${Al}_{2} O_{3}$ from 2200 K to approximately 930 K and being ionic compound dissociates to give ions which brings about the conductivity of the electrolyte.

Statement-2: Cryolite is ${Na}_{3} {AlF}_{3}$ and is ore of aluminium.

Therefore, (b) option is correct.

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