- ARiboflavin
- BCobalamin
- ✓Thiamine
- DPyridoxine
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($F = 96,500\;C\;mo{l^{ - 1}}; \,\, R = 8.314\;J{K^{ - 1}}mo{l^{ - 1}})$

$2NO + 2H_2 \longrightarrow N_2 + 2H_2O$
has following mechanism
Step $-I$ : $2NO \longrightarrow N_2O_2$
Step $-II$ : $N_2O_2 + H_2 \longrightarrow N_2O + H_2O$
Step $-III$ : $N_2O + H_2 \longrightarrow N_2 + H_2O$
Which of the following substance is a reaction intermediate
$\begin{array}{*{20}{c}}
{\,\,C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - CH = C{H_2}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,C{H_3}\,\,\,\,\,\,\,\,\,\,\,}
\end{array}\xrightarrow[{2.\,KOH - EtOH,\,heat}]{{1.\,HBr}}$
The major end product formed is :-