MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

The boiling point of haloalkanes increases with an increase in the molecular mass and the size of the halogen atom due to the stronger van der Waals forces of attraction. Comparing the given compounds: CH _3 Cl has one chlorine atom. CH _3 Br has one bromine atom, which is heavier and larger than chlorine. CH _2 Br _2 has two bromine atoms. CHBr _3 has three bromine atoms. The molecular mass follows the order: CHBr _3 > CH _2 Br _2 > CH _3 Br > CH _3 Cl . Therefore, the decreasing order of boiling points is CHBr _3 > CH _2 Br _2 > CH _3 Br > CH _3 Cl . Answer: CHBr _3 > CH _2 Br _2 > CH _3 Br > CH _3 Cl