Which of the following has highest boiling point?

The elevation in boiling point is given by
\(\Delta T_{b}=i \times k_{b} \times m\)
West, \(\Delta T_{B}=\) Elevation in boiling point
\(i=\) Van't Voff factor
\(K_{b}=\) molal boiling point constant
\(m=\) molality of solution. (it is same fore
all, acconding to question)
Therefore, Elevation in boiling paint is directly proportional to the number of species present in the solution (van't Ueff factor)
(i) \(0.1 \mathrm{M} \mathrm{NaCl} \Rightarrow i=2\), since NaCl is ionic and if will dessociate into \(\mathrm{Na}^{+}\)and \(\mathrm{Cl}^{-}\)in aqueals solution
(ii) \(0.1 \mathrm{M}\) suchose \(\Rightarrow\) it will not dissociate in aqueous solution, since it is covalent in nuture.
(iio) \(0.1 \mathrm{M} q \mathrm{ucose} \Rightarrow\) it will not dissociate in aqueous solution, since it is coualent in nature.
(iv) \(0.1 \mathrm{M}\) urea \(\Rightarrow\) it will not dissociate in aqueous solution, since it is covalent in nature.
Therefore, Nacl will have highest boiling point because it is ionic and will have highest number of solute particles.