Which among the following forces of attraction is developed between polar and non polar molecules?

Which among the following is correct conjugate acid base pair for the equation stated below?

$$\mathrm{HCl}+\mathrm{NH}_3 \rightleftharpoons \mathrm{NH}_4^{+}+\mathrm{Cl}^{-}$$

Which among the following compounds is NOT a tertiary amine?

Which among the following reactions is used for the preparation of alkyl fluorides?