The boiling point of an aqueous solution depends on the number of solute particles in the solution. This is because the presence of solute particles cause boiling point elevation, which is a colligative property. Let's analyze the given options based on the dissociation of solutes in water: 1. 1NKNO3 (Potassium Nitrate): KNO3 dissociates completely in water to form two ions: K+and NO3 : Therefore, it yields 2 particles per formula unit. 2. 1 N NaCl (Sodium Chloride): NaCl also dissociates completely in water to form two ions: Na+and Cl . Thus, it produces 2 particles per formula unit. 3. 1NCH3‌COOH (Acetic Acid): CH3‌COOH is a weak electrolyte and does not completely dissociate in water. It partially ionizes to produce CH3COO−and H+. The number of particles produced is less than a strong electrolyte like NaCl or KNO3. 4. 1 N Sucrose: Sucrose is a non-electrolyte and does not dissociate in water. It remains as one molecule and does not increase the number of particles in the solution. Based on the above points, the order of boiling points for the given aqueous solutions is determined by the number of particles they produce in solution. More particles lead to a higher boiling point. −1NKNO3 and 1 N NaCl will have the same boiling point elevation since both produce 2 particles per formula unit. 1NCH3‌COOH will have a lower boiling point elevation than KNO3 and NaCl due to partial dissociation. 1 N Sucrose will have the lowest boiling point elevation since it does not dissociate. Therefore, the correct order according to boiling points is: Option B 1NKNO3=1‌NNaCl>1NCH3‌COOH>1‌ Nsucrose ‌