1.

A white precipitate (X) is formed when a mineral of Boron (W) is bolied with Na_(2)CO_(3) solution. The precipitate is filtered and the filtered contains two compounds (Y) and (Z). The compound (Y) is removed by crustallization. By passing CO_(2) through (Z) changes to (Y). 'X' is

Answer»

`Al(OH)_(3)`
`AlF_(3)`
`CaCO_(3)`
`FE(OH)_(3)`

Answer :C


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