MCQ
Major product of the reaction is


- A

- B

- ✓

- D$\begin{array}{*{20}{c}}
{Ph - CH - CH - Ph}\\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}\\
{\,\,\,\,\,C{H_3}\,\,\,\,\,\,\,\,OH}
\end{array}$





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Statement $I:$ According to Bohr's model of hydrogen atom, the angular momentum of an electron in a given stationary state is quantised.
Statement $II:$ The concept of electron in Bohr's orbit, violates the Heisenberg uncertainty principle.
In the light of the above statements, choose the most appropriate answer from the options given below:
${C_2}{H_{4(g)}} + {H_{2(g)}} \rightleftharpoons {C_2}{H_{6(g)}}\,;$
$\Delta H = -32.7\,Kcal$ carried out is a vessel, the equilibrium concentration of $C_2H_4$ can be increased by

