MCQ
Which one of the following alkenes will react fastest with $H_2$ under catalytic hydro-genation condition
- ✓

- B

- C

- D






${}_H^H > C = C\, < \,_H^H$ ${}_R^R > C = C\, < \,_H^R$
${}_R^R > C = C\, < \,_H^H$ ${}_H^R > C = C\, < \,_H^R$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$(I)\,\,B{r^ - }{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} $ $(II)\,\,\begin{array}{*{20}{c}}
{{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} O{\mkern 1mu} } \\
{{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} ||} \\
{{H_3}C - C - {O^ - }}
\end{array}$ $(III)\,\,C{H_3}C{H_2}{O^ - }$ $(IV)\,\,Ph - {O^ - }$
$HC \equiv CH\mathop {\xrightarrow{{NaN{H_2},C{H_3}COC{H_3}}}}\limits_{{H^ + }} X\mathop {\xrightarrow{{H{g^{2 + }},{H_3}{O^ + }}}}\limits_{{H_2}O} Z$ is
