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WB JEE 2017
MCQ (More than One Correct Answer)
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The role of fluorspar, which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite is
A
as a catalyst
B
to make fused mixture conducting
C
to lower the melting temperature of the mixture
D
to decrease the rate of oxidation of carbon at anode
Questions Asked from MCQ (Multiple Correct Answer)
WB JEE Subjects