Hey aspirant,

One gets his reservation according to his application. You have to show your certificate according to your application and if you can submit your certificates, then you get reservation for that. So, first thing is you need to fill the form correctly and carefully. As you have not mentioned about your rural quota in the form. so, now you won't get the facility for that reservation. So, now you are not eligible for rural quota though you have a certificate.

Good Luck!