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in Chemistry by (122k points)
किस अभिक्रिया द्वारा कोलायडी विलयन प्राप्त होता है ?
A. `Cu + HgCl_(2) to CuCL_(2)+Hg`
B. `2HNO_(3)+3H_(2)S to 3S +4H_(2)O+2NO`
C. `2Mg+CO_(2) to 2MgO+C`
D. `Cu+CaCl_(2 )to Cu_(2)CL_(2)`

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