JEE Main 2026 Chemistry question
Given below are two statements: Statement I: Due to increase in van der Waals forces, the order of boiling points is CH₃CH₂CH₂I > CH₃CH₂I > CH₃I. Statement II: As para-dichlorobenzene is more symmetric, its melting point is higher than ortho-dichlorobenzene, however its boiling point is lower than ortho-dichlorobenzene. In the light of the above statements, choose the correct answer from the options given below:
Answer: (A)
Solution
Boiling points rise with size: C₃H₇I (102 °C) > C₂H₅I (72 °C) > CH₃I (42 °C) (I true). The para isomer packs better in the crystal
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