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)`.

Options

A. `SiO_(2)`remains unaffected by reagent of Baeye's process
B. `FeSiO_(3)`slag is formed by the reaction of `SiO_(2)`and ferric oxide
C. `SiO_(2)`is decomposed to produced elementaol `Si`and `O_(2)` gas which removed in the from of vapour
D. `SiO_(2)`dissolves in the from of silicate ion

Answer

D

Explanation

`underset("Aci dic")(SiO_(2))+underset("Basic")(2NaOH) rarrunderset("Solub l esiicate")(Na_(2)SiO_(3)) +H_(2)O`