MCQ
Tautomerism is exhibited by


- A$(1)$, $(3)$ and $(4)$
- B$(2)$, $(3)$ and $(4)$
- CAll of these
- DNone of these

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$[Figure]$ $\xrightarrow[{Heat}]{{NaOC{H_3}\left( {1\,eq.} \right)}}$
$CH_{4(g)} + 2O_{2(g)} \rightleftharpoons CO_{2(g)} + 2H_2O_{(l)},$
$\Delta H_r = -170.8 \, k\,J\,mol^{-1}.$ which of the following statements is not true ?