1.

A colourless crystalline salt 'x' is soluble in dilute HCl. On adding NaOH solution, it gives a white precipitate which is insoluble in excess of NaOH, 'x' is

Answer»

`Al_(2)(SO_(4))_(3)`
`ZnSO_(4)`
`MgSO_(4)`
`SnCl_(2)`

Solution :`MgSO_(4)` is COLOURLESS crystalline SALT and is soluble in dil. HCL. On adding NaOH solution it gives a white ppt of Mg `(OH)_(2)` which is insoluble in excess of NaOH.
`MgSO_(4)+2NaOH to Mg(OH)_(2)+Na_(2)SO_(4)`.


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