Knockout JEE Main Sept 2020
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leaching of Bauxite using concentrated NaOH solution gives sodium aluminate and sodium silicate
It is Buyer's process
sodium aluminate
silica + NaOH
sod. silicate
Option 1)
leaching of bauxite using concentrated NaOH solution gives sodium aluminate and sodium silicate.
Option 2)the Hall-Heroult process is used for the production of aluminum and iron
Option 3)pig iron obtained from cast iron
Option 4)the blistered appearance of copper during the metallurgical process is due to the evaluation of