Hi Shilpa,

For IIT Bhubaneshwar, Third and fourth round opening and closing rank for chemistry branch are  in between 214 to 348 for general category.

477 to 730 for OBC Category

1464 to 1880 for SC Category

5706 to 5846 for ST Category

To know more about the cutoff you can  go through the below link: https://jam.iitk.ac.in/doc/JAM2019_cutoffRound3.pdf

This is the official link of IIT Jam last year counselling result.