Can a student select JEE Advanced exam centres from any zone (IIT Delhi or IIT Madras), which may be outside state of his/her 12th school?
Yes, you can select JEE Advanced exam in any zone as per your preference. Just enter your preferred zone of taking exam while filling up the form and everything will be taken care off.
Yes you can select any exam centre from any zone
Although the allocation of centre is based upon the availability at that particular location
The preference of centre doesn't guarantee that you will get the chosen centre, it may or may not be same.
Hope this helps.
Thank You.