Hey,

You can surely apply for two Back (Hons) courses in Jadavpur University. The only thing is that you need to register individually for every course you feel like applying to. After getting selected you will have to choose one Hons degree   between all.

Below I have attached a link that contains all course and related information in case you want to have a look.

https://www.google.com/amp/s/university.careers360.com/articles/jadavpur-university-admission-criteria/amp

Hope that helps.

Thank you