In the process of extraction of Aluminium, Bauxite is mixed with cryolite so as to -

Reduce its melting point

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Increase its electrical conductivity

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Increase its melting point

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Molten cryolite acts as solvent

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Solution

The correct option is A
Reduce its melting point

Bauxite is the oxide ore of Aluminum. Extraction is done through electrolysis for which bauxite should conduct electricity. It doesn't conduct electricity in solid form so it need to be melted. But it has very high melting point. So cryolite is added to reduce the melting point and thus making the process more economical.

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For each substance listed below, explain its significance in the extraction of aluminium:

(a) Bauxite, (b) Sodium hydroxide,

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