I m not delhi domicile but I have given 12thexm from delhi should I applicable for state quota of delhi
YES , BY GIVING EXAM IN DELHI/ SCHOOL IN DELHI, YOU ARE 100% ELIGIBLE FOR DELHI STATE QUOTA.
you need to have migration certificate, transfer certificate etc for a school which is in Delhi, and you are good to go.
these all certificates are given by school along with your class 12th marksheet.