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In the electrolysis of alumina , cryolite and `CaF_(2)` are added toA. increase the emf of cellB. decrease the emf of cellC. decrease the melting pointD. Both (b) and (c) |
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Answer» Correct Answer - C Cryolite and `CaF_2`(fluorspar) are added to alumina in its electrolysis to decrease its melting point and to increase the electrical conductivity . |
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