Which of the following is a racemic mixture?

Options

A. `25%(+)`and`75%(-)`
B. `50%(+)`and`50%(-)`
C. `80%(+)`and`20%(-)`
D. `40%(+)`and`60%(-)`

Answer

B

Explanation

A mixture of equal parts of enantiomers is called no longer mixture. A `1:1` mixture of two enantiomers will no longer infuence polarized light since the effect of one enantiomer is cancelled by the other.