Hello, 

As per your requirement, i would say that the seats in these colleges 50% (approx) of seats are reserves for linguistic minority quota.

These seats are allotted under management quota.

There will be a separate rank list for students having their mother tongue as telling/malayalam. And this counselling is conducted on a separate day.

In addition to the regular documents one has to bring documents of proof stating that your mother tongue is telugu/malayalam eg: cast certificate (subcast) , transfer certificate from school and a verified and attested letter from school.

Good luck