Which one of the following is used to remove silicon dioxide in the Serpeck's process of purification of bauxite ?

Which one of the following is used to remove silicon dioxide in the Se

1.	Which one of the following is used to remove silicon dioxide in the Serpeck's process of purification of bauxite ?
Answer» CAO `Na_(2)CO_(3)` Coke Nickel Solution :`SiO_(2)+2C rarr Si UARR + 2CO uarr` In Serpeck's process of purification of bauxite `SiO_(2)` is removed by carbon as volatile PRODUCTS.