Question

Racemic mixture is optically inactive?? Reason

Answer 1

the racemic mixtures have equal propotions of enantiomers. so they are optically inactive 

Answer 2

Hey !!

Racemic mixture contains d and l enantiomers in equal proportions. As the rotation due to one enantiomer is cancelled by equal and opposite rotation of another enantiomer, therefore, it is optically inactive.

Good luck !!