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ICSE Class 10 Chemistry 2013 Paper

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The following questions relate to the extraction of aluminium by electrolysis :
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Question : 64 of 84
Marks: +1, -0
Name the other aluminium containing compound added to alumina and state its significance.
Solution:  
Cryolite (Na3AlF6)(\mathrm{Na}_3\mathrm{AlF}_6)
It reduces the temperature and enhance conductivity.
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