1 Which of the following are optically active chiral compoun
     1. Which of the following are optically active (chiral) compounds? Br (a) OH Cl Cl  
  
  Solution
(a) compound a is optically active. In Carbon atom C3 has 4 different groups or atoms and also doesn\'t possess any plane of symmetry.
(b) Compound b is optically inactive because it posses plane of symmetry.
(c) Compound c is optically active. C3 carbon has 4 different substituents.
(d) Compound d is optically inactive. It possessed a plane of symmetry.

