Choose the correct answer from the options given below:
$B.$ Neutral $FeCl _3$ solution is used to test phenolic compound $(IV)$
$C.$ Alkaline chloroform solution is used to test primary amines $(II)$
$D.$ $2 KI + NaOCl + H _2 O \rightarrow NaCl + I _2+2 KOH$
Potassium iodide and sodium hypochlorite gives $\left( I _2+ KOH \right)$ which is used to test those compounds which have $image$ group (iodoform test). Hence the compound is $image$
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$(I)$ $BO_3^{-3} > CO_3^{-2} > NO_3^-$
$(II)$ $ClO_4^-> SO_4^{-2} > PO_4^{-3}$
$(III)$ $BF_3 > BCl_3 > BBr_3$
$(IV)$ $AlCl_3 > BCl_3$
