NEET levelSingle correct optionDifficulty 1 of 3mt010
In the electrolytic reduction of alumina, cryolite is added mainly to
Aact as the reducing agent for alumina
Blower the fusion temperature and increase the electrical conductivity of the melt
Cprevent the anode from burning
Dincrease the density of the melt so that aluminium floats
Answer: B
Pure alumina melts near 2300 K and is a poor conductor. Dissolving it in molten cryolite lowers the working temperature and makes the melt conducting. Cryolite is not a reductant and does not protect the carbon anode.