Q.

The incorrect statement regarding chirality is:      [2022]

1 A racemic mixture shows zero optical rotation.  
2 SN1 reaction yields 1 : 1 mixture of both enantiomers.  
3 The product obtained by SN2 reaction of haloalkane having chirality at the reactive site shows inversion of configuration.  
4 Enantiomers are superimposable mirror images on each other  

Ans.

(4)