The 0.1 M aqueous solutions, each of urea, common salt and sodium sulphate, are taken. The ratio of — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Elevation in boiling point is directly proportional to the van't Hoff factor $i$ for equal concentrations. Urea has $i=1$, common salt (NaCl) has $i=2$, and sodium sulphate ($\text{Na}_2\text{SO}_4$) has $i=3$. The ratio is 1:2:3. Therefore, correct answer is C.