1.

Which of the following reactions leads the formation of colloidal solution ?

Answer»

`CU + HgCl_(2) to CuCl_(2) + Hg`
`2HNO_(3) + 3H_(2)S to 3S + H_(2)O + 2NO`
`2Mg +CO_(2) to 2MgO + C`
`Cu = CuCl_(2) to Cu_(2)Cl_(2)`

Solution :`2HNO_(3) + 3H_(2)S to 3S + 4H_(2)O + 2NO`


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