Hi

I am guessing that you are asking about IEM Kolkata because admission in IIMS is not through WBJEE. IIMS offer admission through CAT for mba and IPMAT for integrated mba

In wbjee all the seats are alloted on the basis of GMR rank and not your category rank.

This is very difficult to predict because cut off keeps changing every year depending upon a number of factors like

--------) number of students that appeared in the WBJEE exam

--------)difficulty level of the WBJEE examination

--------)Kind of marks obtained by the students in the WBJEE exam

--------) number of students from different categories etc

But yes,

With your 45948 rank , considering your category as sc

On the basis 2020, in 3rd round of wbjee counselling,  , you have good chance in IEM Kolkata in branches like :-

• IT :-48005

• Electrical Engineering:-59864

• Civil Engineering:-61656
  

And a few more

As per  past year cut off available at Official website :- https://admissions.nic.in/wbjeebcouns2019/wbjeebcouns2019/orcr/PrevYearORCR.aspx

To have a personalised report on your chances of getting a college you can go through our WBJEE college predictor, it will give you complete list of colleges which you can get on the basis of the category you belong to,  your , your gender etc the link for  WBJEE  college predictor is provided below

Thank you