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General Principles and processes of Isolation of Elements
medium
The correct statement is
A
leaching of bauxite using concentrated $NaOH$ solution gives sodium aluminate and sodium silicate
B
the Hall-Heroult process is used for the production of aluminium and iron
C
the blistered appearance of copper during the metallurgical process is due to the evolution of $CO_2$
D
pig iron is obtained from cast iron
(JEE MAIN-2019)
Solution
Since $NaOH$ is a strong base hence it reacts with $Al_2O_3$ and $SiO_2$ to form salts.
Standard 12
Chemistry
