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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The increase in boiling point of solution in benzene in ${ }^{\circ} \mathrm{C}$ is $\mathrm{x} \times 10^{-2}$. The value of $\mathrm{x}$ is ..... .(Nearest integer)
$[$ Atomic mass : $\mathrm{C}=12.0, \mathrm{H}=1.0, \mathrm{O}=16.0]$
