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

IIT Kanpur    Chemical Engineering        Chemical     

IIT Bombay  Chemical Engineering        Chemical Engineering       

IIT Madras    Chemical Engineering        Catalysis Technology        

IIT BHU        School of Biochemical Engineering         Biochemical Engineering   

IIT Hyderabad        Chemical Engineering        Chemical Engineering       

IIT Guawhati Chemical Engineering        Chemical Engineering       

IIT ISM Dhanbad    Chemical Engineering        Chemical Engineering       

IIT BHU        Chemical Engineering and Technology    Chemical Engineering       

IIT Gandhinagar      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