1.

What is Sorel's cement and how is it prepared?

Answer»

`5MgCl_2 . MGO . xH_2O`
`MgCl_2 . 5 MgO . xH_2O`
`MgCl_2 . MgO . xH_2O`
`MgCl_2 . 2MgO . xH_2O`

SOLUTION :`MgCl_2 . 5 MgO . xH_2O`


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