- A$HCHO$
- ✓${(C{H_3})_2}CO$
- C$C{H_3}OC{H_3}$
- D$C{H_3}C{H_2}Cl$
$\begin{array}{*{20}{c}}
O \\
{||} \\
{C{H_3} - C - CC{l_3}}
\end{array}$ $ + \,NaOH\, \to $ $CHCl_3+$ $\begin{array}{*{20}{c}}
O \\
{||} \\
{C{H_3} - C - ONa}
\end{array}$
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$(A)$ Kinetic energy of electron is $\propto \frac{ Z ^{2}}{ n ^{2}}$.
$(B)$ The product of velocity (v) of electron and principal quantum number (n), 'vn' $\propto Z ^{2}$.
$(C)$ Frequency of revolution of electron in an orbit is $\propto \frac{ Z ^{3}}{ n ^{3}}$.
$(D)$ Coulombic force of attraction on the electron is $\propto \frac{ Z ^{3}}{ n ^{4}}$.
Choose the most appropriate answer from the options given below :
| List $I$ (Amines) | List $II$ $\left( pK _{ b }\right)$ |
| $A$ Aniline | $I$ $3.25$ |
| $B$ Ethanamine | $II$ $3.00$ |
| $C$ $N-$Ethylethanamine | $III$ $9.38$ |
| $D$ $N, N-$Diethylethanamine | $IV$ $3.29$ |
Choose the correct answer from the options given below :-