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Red bauxite contains chief impurity of f...

Red bauxite contains chief impurity of ferric oxide but contains some amount of `SiO_(2)` is subjected to Baeyer'sprocess then select correct reason for `SIO_(2)`.

A

`SiO_(2)` remains unaffected by reagent of Baeyer's process

B

`FeSiO_(3)` slag is formed by the reaction of `SiO_(2)` and ferric oxide

C

`SiO_(2)` is decomposed to produce elemental Si and `O_(2)` gas which is removed in the form of vapour

D

`SiO_(2)` dissolves in the form of silicate ion

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