I believe with a Rank of 1141 in CPGET,in Chemistry domain, only because you have BC Categorical Advantage, you have somewhat fair chances to secure a seat at one of the Better Colleges under Osmania University. Do keep an eye on the Counselling dates and procedure respectively.

For more information about CPGET do follow the link below

https://www.careers360.com/exams/cpget

To know more abot MSc Chemistry at Osmania University Hyderabad do follow the link below

https://www.careers360.com/university/osmania-university-hyderabad/msc-chemistry-course