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ICSE Class 10 Chemistry 2019 Paper

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Answer the following questions based on the extraction of aluminium from alumina by Hall-Heroult's Process :
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Question : 72 of 86
Marks: +1, -0
What is the function of cryolite used along with alumina as the electrolyte?
Solution:  
Cryolite reduces the melting point of Alumina from 2050∘ C2050^{\circ}\,\mathrm{C} to 950∘ C950^{\circ}\,\mathrm{C}.
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