Among the following whichis less than ethene but gives Markovnikov's product in the addition of HBr

Among the following whichis less than ethene but gives Markovnikov's p

1.	Among the following whichis less than ethene but gives Markovnikov's product in the addition of HBr
Answer» Isobutane `CH_2 = CH- Cl` `CH_2 = CH-NO_2` `CH_2 = CH-OCH_3` Solution :Halogens deactives the alkene towards electrophilic addition DUE to I - effect but GIVES Markovnikoff addition PRODUCT due to + Meffect.