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KCET2021PhysicsElectrostatics

Which of the following statements is false in the case of polar molecules?

Options

  1. ACentres of positive and negative charges are separated in the absence of external electric field.
  2. BCentres of positive and negative charges are separated in the presence of external electric ficld.
  3. CDo not possess permanent dipole moments.
  4. DIonic molecule HCl is the example of polar molecule.

Correct answer

C. Do not possess permanent dipole moments.

Step-by-step solution

Polar molecules are the molecules in which the centres of positive and negative charges are separated even there is no external field. Such molecules have a permanent dipole moment. e.g., HCl , H ₂ O , etc. Thus, statement given in option (c) is false.

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