1.

Which of the following chemical equation represents the formation of colloidal solution

Answer»

`Cu+CuCl_2toCu_2Cl_2`
`2Mg+CO_2to2MgO+C`
`2HNO_3+3H_2Sto3S+4H_2O+2NO`
Both (B) and (C )

ANSWER :C


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