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JEE Advanced · 2008 · 13 Apr 2008 · Paper 1 · General Organic Chemistry

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The correct statement(s) about the compound given below is (are)
  1. (A)The compound is optically active✓ Correct
  2. (B)The compound possesses centre of symmetry
  3. (C)The compound possesses plane of symmetry
  4. (D)The compound possesses axis of symmetry✓ Correct

Answer: (A), (D)

Solution

The compound shown is 2,3-dichlorobutane in its meso form. However, examining the structure carefully:
  • The molecule is optically active because it lacks a plane of symmetry and a center of symmetry in the conformation shown.
  • The molecule possesses an axis of symmetry ( axis) perpendicular to the C–C bond.
  • It does not possess a plane of symmetry or a center of symmetry.

Therefore, statements (A) and (D) are correct.

JEE Advanced · 2008 · 13 Apr 2008 · Paper 1 · One or more correct options

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