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General Principles and processes of Isolation of Elements
easy
શુદ્ધ એલ્યુમિનાનું વિદ્યુત વિચ્છેદન શક્ય નથી કારણ કે.....
A
તે વિધયુત નો અવાહક છે અને તેનું તાપમાન ઊંચું છે
B
તે સ્થિર નથી
C
it is decomposed when fused
D
તે એમ્પોથેરીક છે
Solution
The electrolysis of pure alumina is not feasible because it is bad conductor of electricity and its fusion temperature is high.
Cryolite and fluorspar is added to alumina which lowers the fusion temperature to $1140 K$ and makes alumina good electrical conductor. Then, the electrolysis of fusion mixture is carried out.
Standard 12
Chemistry
