MCQ
Which halide will be least reactive in respect to hydrolysis
- ✓Vinyl chloride
- BAllyl chloride
- CEthyl chloride
- D$t-$Butyl chloride
So, chlorine atom is not replaced easily.
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| List $- I$ Electronic configuration of elements |
List $- II$ $\Delta_{ i }$ in $kJ\, mol-1$ |
| $(a)$ $1 s ^{2} 2 s ^{2}$ | $(i)$ $801$ |
| $(b)$ $1 s ^{2} 2 s ^{2} 2 p ^{4}$ | $(ii)$ $899$ |
| $(c)$ $1 s^{2} 2 s^{2} 2 p^{3}$ | $(iii)$ $1314$ |
| $(d)$ $1 s ^{2} 2 s ^{2} 2 p ^{1}$ | $(iv)$ $1402$ |
Choose the most appropriate answer from the options given below
$2PhCHO \xrightarrow{{:\mathop O\limits^ \ominus H}}PhC{H_2}OH + PhC\mathop {O_2^ \ominus }\limits^{.\,\,.\,\,} $
the slowest step is :

