MCQ
In solution of $AgN{O_{3,}}$if $Cu$ is a solution become blue due to
- AOxidation of $ Ag$
- ✓Oxidation of $Cu$
- CReduction of $Ag$
- DReduction of $Cu$
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$(a)\,0.075\,\,M\,CuS{O_4}$ $(b)\,0.060\,\,M\,(NH_4)_2SO_4$
$(c)\,0.14\,\,M\,urea$ $(d)\,0.04\,M\,MgCl_2$