As per your score and previous year cutoff, the colleges you get in first round are:-

National Institute of Technology Durgapur Department of Chemical Engineering Chemical Engineering

National Institute of Technology Hamirpur Department of Chemical Engineering Chemical Technology (Chemical Dept.)

Sant Longowal Institute of Engineering and Technology Department of Chemical Engineering Chemical Engineering

National Institute of Technology Kurukshetra

National Institute of Technology Srinagar Department of Chemical Engineering Chemical Engineering

To know more about your chances of getting other colleges check out the PSU/college predictor link below:

https://engineering.careers360.com/gate-college-predictor