1st of all congratulations. If you want jadavpur you can try. I am not sure jadavpur take 500 up ranks in it or ece  Because it is a top college.
But you can get top colleges as per your obc -b rank

Jadavpur cut off as per your rank
BE Power Engineering 2019 - 580 Closing rank

BE Metallurgical Engineering 2019 -577 Closing rank

BE Construction Engineering 2019 - 655 Closing rank

B.Tech Food Technology 2019 - 711 Closing rank

BE Chemical Engineering 2019 - 514 Closing rank

BE Civil Engineering 2019 - 517 Closing rank

BE Instrumentation and Electronics Engineering 2018 - 865 Closing rank

Some other college are
Heritage Institute of Technology, Kolkata

Techno India University, Kolkata

Haldia Institute of Technology, Haldia

NIT Kolkata - Narula Institute of Technology

For more college name you can visit here
https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-west-bengal-accepting-wbjee

Thank you. All the best. I hope this answer helps you.

Jadavpur University, Kolkata

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