Among statements (a) – (d), the correct ones are :(a) Cryolite Na_(3)[AIF_(6)]lowers the melting point of Al_(2)O_(3)in Hall-Heroult process (b) The method of zone refining of metals is based on the principle of solubility of theimpurity in the molten state than in the solid state (c) Extraction of Pb is possible by carbon reduction method (d) In Hall-Heroult process, Aluminium is obtained at cathode andCO_(2)at anode

Among statements (a) – (d), the correct ones are :(a) Cryolite Na_(3

1.	Among statements (a) – (d), the correct ones are :(a) Cryolite Na_(3)[AIF_(6)]lowers the melting point of Al_(2)O_(3)in Hall-Heroult process (b) The method of zone refining of metals is based on the principle of solubility of theimpurity in the molten state than in the solid state (c) Extraction of Pb is possible by carbon reduction method (d) In Hall-Heroult process, Aluminium is obtained at cathode andCO_(2)at anode
Answer» (a), (B), (C ) and (d) (a), (c ) and (d) only (c ) and (d) only (b), (c ) and (d) only ANSWER :A