Read the Assertion and Reason below and choose the correct option. — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Urea is a non-electrolyte ($i=1$), whereas KCl is a strong electrolyte that dissociates into 2 ions ($i \approx 2$). Since boiling point elevation is directly proportional to the number of particles ($\Delta T_b \propto i \cdot m$), the KCl solution will have a higher $\Delta T_b$ and thus a higher boiling point. Statement I is true, and Statement II is the exact principle that explains it. Therefore, correct answer is A.