- ✓Benzaldehyde
- BAcetone
- CBenzoquinone
- DBenzophenone
$ \to \mathop {{C_6}{H_5}CH = NNHCON{H_2}}\limits_{{\rm{semicarbazone}}} $
The product shows $E$ and $Z$ configuratio
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$E_a\ (Kcal/mol)\,||$ Temp. Change $(K)$
$(I)$ $40\,||\,200\, -\, 210$
$(II)$ $80\,||\,200 \,-\, 210$
$(III)$ $40\,||\,300\, -\, 310$
$(IV)$ $80\,||\,300\, -\, 310$
$PC{l_5}\xrightarrow{\Delta }PC{l_3} + C{l_2}$

$2 Fe ^{2+}+ H _{2} O _{2} \rightarrow x A + y B$
(in basic medium)
$2 MnO _{4}^{-}+6 H ^{+}+5 H _{2} O _{2} \rightarrow x ^{\prime} C + y ^{\prime} D + z ^{\prime} E$
(in acidic medium)
The sum of the stoichiometric coefficients $x , y , x ^{\prime}, y ^{\prime}$ and $z ^{\prime}$ for products $A , B , C , D$ and $E ,$ respectively, is............