Hi

If we take into consideration of previous year WBJEE rank vs marks, your rank will be around 6k (as per previous year). So with this rank you may not be able to get any of the 4 year B.Tech courses at Jadavpur University but you can get 5-Year B.Arch. Course, i.e. Architecture in Jadavpur University. 

Check this link to know more about Course Wise Cutoffs Trends in Jadavpur University: https://www.careers360.com/university/jadavpur-university-kolkata/cut-off.

As per University of Calcutta Cut Off 2018 (Round 3), you may get Optics and Optoelectronics, Polymer Science and Technology.

And hit this link to check Previous Year Cutoffs at various Colleges accepting WBJEE rank: https://engineering.careers360.com/articles/wbjee-cutoff#.

Best of Luck.

Hope this helps.

Cheers!