Out of the following which reaction gives a colloidal solution ? – InterviewSolution

1.	Out of the following which reaction gives a colloidal solution ?
Answer» `Cu+HgCl_2rarrCuCl_2+Hg` `2HNO_3+3H_2Srarr3S+4H_2O+2NO` `2Mg+CO_2rarr2MgO+C` `Cu+CuCl_2rarrCu_2Cl_2` ANSWER :B

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