Which of the following option(s) is/are true?

Dissymmetric compound does not possess plane of symmetry (POS)

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Dissymmetric compound does not possess centre of symmetry (COS)

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Asymmetric compound does not possess centre of symmetry (COS)

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Asymmetric compound does not possess plane of symmetry (POS)

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Solution

The correct option is D Asymmetric compound does not possess plane of symmetry (POS)
Based on Symmetry, compounds can be Disymmetric or Asymmetric.

Dissymmetric Compound:
When the compound does not possess plane of symmetry (POS) and centre of symmetry (COS), the compound is said to be dissymmetric. Dissymmetry is the necessary and sufficient condition for optical activity.

Asymmetric Compound:
Dissymmetric compounds with atleast one chiral carbon are assymetric. Here, the compound does not possess POS, COS.
All asymmetric compounds are dissymmetric but vice-versa is not always true.

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