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MHT CET202411 May 2024Morning ShiftChemistryHaloalkanes and HaloarenesActual

Which among the following has lowest boiling point?

Options

  1. AChloromethane
  2. BBromomethane
  3. CDibromomethane
  4. DTribromomethane

Correct answer

A. Chloromethane

Step-by-step solution

Boiling point comparisons for aldehydes rely primarily on molecular weight and intermolecular forces. Increasing molecular weight enhances van der Waals interactions, raising boiling points. Molecular weights correspond to carbon counts: Pentanal (C ₅ H ₁₀ O) > Propanal (C ₃ H ₆ O) > Ethanal (C ₂ H ₄ O) > Methanal (CH ₂ O) Methanal, with the smallest molecular mass and weakest intermolecular forces, exhibits the lowest boiling point.

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