• # question_answer Which kind of isomerism is possible for 1-chloro-2-nitroethene [J & K 2005] A) Functional group isomerism B) Position isomerism C) $E/Z$ isomerism D) Optical isomerism

$\underset{\text{1-chloro-2-nitroethene}}{\mathop{{{O}_{2}}NHC=CHCl}}\,$ For highly substituted alkenes $E$ and $Z$ system of nomenclature is used, which is based on a priority system developed by Cahn, Ingold and Prelog.