Arrange the following compounds according to increasing order of boiling points.

$$ \mathrm{n}-\mathrm{C}_4 \mathrm{H}_9 \mathrm{OH}(\mathrm{~A}), \mathrm{n}-\mathrm{C}_4 \mathrm{H}_9 \mathrm{NH}_2(\mathrm{~B}), \mathrm{n}-\mathrm{C}_4 \mathrm{H}_{10}(\mathrm{C}) \text { and } \mathrm{C}_2 \mathrm{H}_5 \mathrm{NHC}_2 \mathrm{H}_5(\mathrm{D}) . $$

$$ \text { Match the List-I with List-II } $$

Choose the correct answer from the options given below :

$$ \text { Match the List-I with List-II } $$

Choose the correct answer from the options given below :

First and second ionization enthalpies of lithium are $520 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and $7297 \mathrm{~kJ} \mathrm{~mol}^{-1}$ respectively. Energy required to convert 3.5 mg lithium (g) into $\mathrm{Li}^{2+}(\mathrm{g})\left[\mathrm{Li}(\mathrm{g}) \rightarrow \mathrm{Li}^{2+}(\mathrm{g})\right]$ is $\_\_\_\_$ $\mathrm{kJ} \mathrm{mol}^{-1}$. (nearest integer)

[Molar mass of $\mathrm{Li}=7 \mathrm{~g} \mathrm{~mol}^{-1}$ ]