Published by:
CGP EDU Academic Team
Published on: August 11, 2026
The correct statement is :
A
leaching of bauxite using concentrated 
solutiongives sodium aluminate and sodium silicate.
solutiongives sodium aluminate and sodium silicate. B
the Hall-Heroult process is used for the production ofaluminium and iron.
C
pig iron is obtained from cast iron.
D
the blistered appearance of copper during the metallur-gical process is due to the evolution of 
.
.
Text Solution
Verified by ExpertsThe correct answer is:
A
JEE Main 2019
During metallurgy of aluminium, when bauxite (powdered ore) is treated with 
(conc), sodium aluminate 
is formed and impurity 
present in bauxite dissolves by forming sodium silicate 
Cast iron is obtained from pig iron. Blister of copper is due to evolution of 
. Hall Heroult process is used for the production of aluminium.
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