Hello,
As you have mentioned that your cutoff rank is 1985 under sc category. ts very difficult ti predict the cutoff for 2019 because they cutoff vary from college to college every year and it depends upon various factors like number of seats available, number of candidates appearing for the examination, difficulty level of the question paper.
But if we look over previous year's cutoff for Roorkee you may get the branches listed below:
For furthermore information please go through the link given below :
https://engineering.careers360.com/articles/jee-advanced-cutoff-for-iit-roorkee/amp#
I hope this would help. For further queries please feel free to write me down in the comment box.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile