MCQ
Phenol is obtained by heating aqueous solution of
- AAniline
- ✓Benzene diazonium chloride
- CBenzoic acid
- DNone of these

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$(I)$ coloured ions in aqueous solution
$(II)$ oxides of nitrogen are formed on reaction with concentrated $HNO_3$
$(III)$ chlorides of formula $MCl_2$ and $MCl_3$
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