Each of the following options contains a set of four molecules. Identify the option(s) where all four…

Each of the following options contains a set of four molecules. Identify the option(s) where all four molecules possess permanent dipole moment at room temperature.
  1. BeCl2, CO2, BCl3, CHCl3
  2. SO2, C6H5Cl, H2Se, BrF5
  3. BF3, O3, SF6, XeF6
  4. NO2, NH3, POCl3, CH3Cl

Asked in: JEE Advanced 2019 (Paper 1)

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