1.

Which of the following reactions is not involved in serpeck's process of leaching of Al_2O_3 from white bauxite ore ?

Answer»

`Al_2O_3+N_2+3Coverset(DELTA)rarr2AlN+3CO`
`SiO_2+Coverset(Delta)rarrSi+2CO`
`Na_2CO_3+Al_2O_3overset(Delta)rarr2NaAlO_2+CO_2`
`2AL(OH)_3overset(Delta)rarrAl_2O_3+3H_2O`

ANSWER :C


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