MCQ
Action of diazomethane on phenol liberates
- A${O_2}$
- B${H_2}$
- ✓${N_2}$
- D$C{O_2}$

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$2CrO_4^{2 - } + 2{H^ + } \to C{r_2}O_7^{2 - } + {H_2}O$
$CH_3-CH_2-COOH$ $\mathop {\xrightarrow{{(i)\,AgN{O_3}}}}\limits_{(ii)\,B{r_2}/\Delta } $ $[X]$
$[X]$ will be :