1.

Action of caustic acid soda on aluminium hydroxide gives a compound having formula

Answer»

`Al_(2)(OH)_(4)`
`Na_(2)Al(OH)_(4)`
`NaAlO_(2)`
`Na_(3)AlO_(3)`

SOLUTION :`underset("CAUSTIC soda")(NAOH) + Al(OH)_(3) rarr underset("Sod. Metaaluminate")(NaAlO_(2)+2H_(2)O)`


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