MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

Relative lowering of vapour pressure is a colligative property, which depends on the number of solute particles in the solution. P i C For maximum vapour pressure, the lowering of vapour pressure ( P) must be minimum, which means the van't Hoff factor (i) should be minimum (since concentration C is 1 M for all options). For NaCl, i = 2 For CaCl _2, i = 3 For AlCl _3, i = 4 For C _ 12 H _ 22 O _ 11 (sucrose), i = 1 Since sucrose has the minimum value of i, its solution will have the minimum lowering of vapour pressure and hence the maximum vapour pressure. Answer: 1 M C _ 12 H _ 22 O _ 11