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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| List $-I$ (Chemicals) | List $-II$ (Use / Preparation / Constituent) |
| $(a)$ Alcoholic potassium hydroxide | $(i)$ Electrodes in batteries |
| $(b)$ $Pd / BaSO _{4}$ | $(ii)$ Obtained by addition reaction |
| $(c)$ $BHC$ (Benzene hexachloride) | $(iii)$ Used for $\beta$ - elimination reaction |
| $(d)$ Polyacetylene | $(iv)$ Lindlar's catalyst |
Choose the most appropriate match

Assume Planck's constant $( h )=6.4 \times 10^{-34}\,Js$ Speed of light $( c )=3.0 \times 10^8\,m / s$ and Avogadro's constant $\left( N _{ A }\right)=6 \times 10^{23} / mol$