MCQ
Which of the following is least basic?
- A$\left( CH _{3} CO \right) \ddot{ N } HC _{2} H _{5}$
- B$\left( C _{2} H _{5}\right)_{3} \ddot{ N }$
- ✓$\left( CH _{3} CO \right)_{2} \ddot{ N}H$
- D$\left( C _{2} H _{5}\right)_{2} \ddot{ N }H$

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| Column $-1$ | Column $-2$ |
| $(A)$ Haber's process for ammonia | $(P)$ Zeolite |
| $(B)$ Oswald's process for $HNO_3$ | $(Q)$ $Fe$ |
| $(C)$ Contact processf $H_2SO_4$ | $(R)$ $ V_2O_5$ |
| $(D)$ Cracking of hydrocarbons | $(S)$ $Pt$ gauge |
$\begin{matrix}
O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \,\, \\
||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
N\equiv C-C{{H}_{2}}-C-C{{H}_{2}}-CH=C{{H}_{2}}\to \\
\end{matrix}$ $\begin{matrix}
OH\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\, \,\,\,\, \\
N\equiv C-C{{H}_{2}}-\underset{H}{\mathop{C}}\,-C{{H}_{2}}-CH=C{{H}_{2}} \\
\end{matrix}$