MCQ
Strongest reducing agent is
- A$C{l_2}$
- B$C{l^ - }$
- C$B{r^ - }$
- ✓${I^ - }$
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$(i)$ forms aldehydes on ozonolysis followed by the hydrolysis.
$(ii)$ when vaporized completely $1.53\, \mathrm{~g}$ of $\mathrm{A}$, gives $448\, \mathrm{~mL}$ of vapour at $STP.$
The number of carbon atoms in a molecule of compound $A$ is ...... .
$\begin{array}{*{20}{c}} A \\ {{\text{(simplest optically active alkene)}}} \end{array}\,\xrightarrow[{(ii)\,{X_2}/\Delta }]{{(i)\,{H_2}/Ni/\Delta }}$

$C(g) + 4H(g) \to C{H_4}(g),\,\Delta H = - {x_1}\,k\,cal$
$C{H_4}(g) \to C{H_3}(g) + H(g),\,\Delta H = + y\,k\,cal$
The bond energy of $C - H$ bond is