MCQ
Which of the following has maximum difference in $1^{st}$ and $2^{nd}$ ionisation enthalpy.
- ✓$ \ce{1 s^2, 2 s^2, 2 p^6, 3 s^1}$
- B$\ce{1 s^2, 2 s^2, 2 p^6, 3 s^1 }$
- C$ \ce{1 s^2, 2 s^2, 2 p^1} $
- D$ \ce{1 s^2, 2 s^2, 2 p^6} $
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| Item $-I$ (Mixture) | Item $-II$ (Separation method) |
| $(a)$ $H_2O :$ Sugar | $p.$ Sublimation |
| $(b)$ $H_2O :$ Aniline | $q.$ Recrystallization |
| $(c)$ $H_2O :$ Toluene | $r.$ Stem distillation |
| $s.$ Differential extraction |
$\begin{array}{*{20}{c}}
{\,\,C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - CH = C{H_2}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,C{H_3}\,\,\,\,\,\,\,\,\,\,\,}
\end{array}\xrightarrow[{2.\,KOH - EtOH,\,heat}]{{1.\,HBr}}$
The major end product formed is :-