MCQ
Hydrated $AlCl_3$ is used as :
- Acatalysed in cracking of petroleum
- Bcatalysed in Friedel-Craft's reaction
- CMordant
- ✓all of the above
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Cyclohexane $\xrightarrow{{hv/C{l_2}}}(X)\xrightarrow{{alc.KOH/\Delta }}(Y)\mathop {\xrightarrow{{(i)\,{O_3}}}}\limits_{(ii)\,{H_2}O/Zn} (Z)$
$(Z)$ will be :

Phenol $\xrightarrow[{{H^ + }}]{{{\text{CHC}}{{\text{l}}_3}{\text{ /NaOH}}}}$ Salicyladehyde

$Mn{O_2}(s)\, + \,4{H^ + }(aq)\, + \,2{e^ - }\, \to \, M{n^{ + 2}}(aq)\, + \,2{H_2}O(l)\,;$ $E_2^o\, = \,1.21\,\,V$
$MnO_4^{ - 1}(aq)\, + \,4{H^ + }(aq)\, + \,3{e^ - }\, \to \, Mn{O_2}(s)\, + \,3{H_2}O(l)\,;$ $E_3^o\,?$
value of $E_3^o$ will be ............ $\mathrm{V}$