MCQ
Ethyl chloride is one of the reactants in:
- AWurtz reaction
- BWilliamson's synthesis
- CFriedel$-$craft's alkylation
- ✓All the above

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$(I)\, [Co(NO_2)_3(NH_3)_3]$
$(II)$ cis $-[ RhCl_2 (NH_3)_4]^+$
$(III)\, [Cr(OX)_3]^{-3}$
$(IV)$ cis $ -[PtCl_2 (en)]$
$(V)$ trans $-[Cr(en)_2 Br_2]^+$
$(VI)$ cis $-[Cr(en)_2 Br_2]^+$
$(i)\, [Co(NH_3)_5(NO_2 )]Cl_2$ and $[Co(NH_3)_5(ONO) ]Cl_2$ .... (Linkage)
$(ii)\, [Cu (NH_3)_4 ] [PtCl_4]$ and $[Pt(NH_3)_4] [CuCl_4]$ .... (Coordination)
$(iii)\, [PtCl_2 (NH_3)_4] Br_2$ and $[PtBr_2(NH_3)_4]Cl_2$ .... (Ionization)
Select the correct answer using the codes given below
$(A)$ Sulphanilic acid $(B)$ Picric acid $(C)$ Aspirin $(D)$ Ascorbic acid
