Question

A racemic mixture has:

• A. (+) effect on the plane polarised light
• B. (-) effect on the plane polarised light
• C. no effect on the plane polarised light
• D. may be any of (A) or (B)

Answer 1

The correct option is C no effect on the plane polarised light

A racemic mixture is one that has equal amounts of left- and right-handed enantiomers of a chiral molecule. hence it has no effect on plain polarise light.
A racemic mixture is denoted by the prefix dl- , indicating an equal (1:1) mixture of dextro and levo isomers.