Question

A dextro-rotatory compound:

• A. has a chiral centre
• B. has only one centre of symmetry
• C. converts a normal light into a plane polarized light
• D. all the above

Answer 1

The correct option is A has a chiral centre

The compound which is having a chiral center (carbon attached to the four different atoms/groups) is called as chiral compound and it rotates the plane of plane polarized light towards right or left. When it rotates the plane towards the right, it is called as dextro-rotatory and when it rotates the plane towards left, it is called as laevo-rotatory. These compounds can show optical activity and they do not contain any of the four elements of symmetry.