Colleges in Telangana

80-85% is enough, but I am not at sure whether you will get the seat or not.
If you have above 90%, you can easily get a seat.
If your caste is ST, SC, then you can get a seat with 80-85%.

Yes, you can get admission in Nizam College.
But the point is only when you have SC and ST caste reservation. Because by the marks you have, you can get the seat only if you have the reservation quota.

Yes, you can get a seat in Nizam College
But, only according to your reservation, you can get a seat.
Because by the percentage you had, it is difficult to get.
There is only chance by the caste reservation.

IIT BHU if you have interest in mech core.

BHU ECE anyday, old IITs have enough alumni connection which helps.

IIT Dhanbad CSE if you have specific interest in CSE else IIT BHU ECE.

Candidate must have passed Bachelor's degree in Medicine, Dentistry, AYUSH, Physiotherapy, Occupational therapy, Nursing, Nutrition, Pharmacology, Veterinary Sciences, Agricultural Sciences, Social sciences or any other Science degree with a minimum of 55% marks from a recognized Institute/ University. OR Candidate passed Degree holders in Arts and Humanities with an interest in Public Health with a minimum of 55% marks in the qualifying Bachelor's degree examinations are also encouraged to apply.

I don't think so, check the cutoff and just give it a try.

Kamala Nehru Polytechnic for Women
Mahaveer Institute of Science and Technology
Maulana Azad National Urdu University, Polytechnic Hyderabad
Nawab Shah Alam Khan College of Engineering and Technology
Quli Qutub Shah Government Polytechnic
Smt. Durgabai Deshmukh Women Technical Training Instutie
Sri Venkateshwara College of Pharmacy.