MCQ
The element which is essential in nitrogen fixation is
- AZinc
- BCopper
- ✓Molybdenum
- DBoron
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$\mathop {\begin{array}{*{20}{c}}
O \\
{||} \\
{Ph - C - Ph}
\end{array}}\limits_{(I)} $ $\mathop {\begin{array}{*{20}{c}}
{\,\,\,\,\,\,O} \\
{\,\,\,\,\,||} \\
{C{H_3} - C - H}
\end{array}}\limits_{(II)} $ $\mathop {\begin{array}{*{20}{c}}
{\,O} \\
{||} \\
{C{H_3} - C - C{H_3}}
\end{array}}\limits_{(III)} $
$Fe|FeSO_4$ $E^o_{OP} = 0.44\, V$ $(a = 0.1\, M)$
$\lambda_{\mathrm{m}\left(\mathrm{H}_{2} \mathrm{SO}_{4}\right)}^{0}=\mathrm{x} \;\mathrm{S}\; \mathrm{cm}^{2} \mathrm{mol}^{-1}$
$\lambda_{\mathrm{m}\left(\mathrm{K}_{2} \mathrm{SO}_{4}\right)}^{0}=\mathrm{y} \;\mathrm{S\;cm}^{2} \mathrm{mol}^{-1}$
$\lambda_{\mathrm{m}(\mathrm{CH_3} \mathrm{COOK})}^{0}=\mathrm{z}\; \mathrm{S\;cm}^{2} \mathrm{mol}^{-1}$
$\lambda_{\mathrm{m}}^{0}\left(\mathrm{in}\; \mathrm{S} \;\mathrm{cm}^{2} \mathrm{mol}^{-1}\right)$ for $\mathrm{CH}_{3} \mathrm{COOH}$ will be