1.

Which of the following reactions does not take place during leaching for concentration of bauxite?

Answer»

`Al_(2)O_(3) + 2NaOH + 3H_(2)O to 2NA[Al(OH)_(4)]`
`2Na[Al(OH)_(4)]+CO_(2) to Al_(2)O_(3).xH_(2)O + 2NaHCO_(3)`
`Al_(2)O_(3)*2H_(2)O overset(Delta)to Al_(2)O_(3)+ 2H_(2)O`
`Al_(2)O_(3)*xH_(2)O overset(Delta)to Al_(2)O_(3)+ xH_(2)O`

Answer :C


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