21. In which of the following geometrical isomerism is possible? 1 . C H 3 C H = C C H 3 2 2 . C 6 H 5 N = N C 6 H 5 3 . C H 3 C H = C H 2 4 . A l l o f t h e s e Share with your friends Share 2 Bharti Paliwal answered this Dear Student Regards 8 View Full Answer