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

Options

A. `Al_(2)(SO_(4))_(3)`
B. `ZnSO_(4)`
C. `MgSO_(4)`
D. `SnCl_(2)`

Answer

C

Explanation

`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)`.