MCQ
Identify the reagent(s) $'A'$ and condition(s) for the reaction :


- A$A = HCl ;$ Anhydrous $AlCl _{3}$
- B$A = HCl , ZnCl _{2}$
- ✓$A = Cl _{2} ; UV$ light
- D$A = Cl _{2}$; dark, Anhydrous $AlCl _{3}$

The reaction is free radical halogenation.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| List $I$ (Coordination entity) | List $II$ (Wavelength of light absorbed in $nm$) |
| $A$ ${\left[ CoCl \left( NH _3\right)_5\right]^{2+}}$ | $I$ $310$ |
| $B$ ${\left[ Co \left( NH _3\right)_6\right]^{3+}}$ | $II$ $475$ |
| $C$ ${\left[ Co ( CN )_6\right]^{3-}}$ | $III$ $535$ |
| $D$ ${\left[ Cu \left( H _2 O \right)_4\right]^{2+}}$ | $IV$ $600$ |
Choose the correct answer from the options given below

$C_2H_5-Br\overset{AgCN}{\rightarrow}A\overset{H_2/Ni}{\rightarrow}B$
Product $B$ is