How much does graduation CGPA matter in MBA placements in XLRI or JBIMS?

Yes, you might be able to get into UIET Chandigarh with a JEE Main rank of 74,000. The most likely branch that you will get into as a general category is ECE, EEE, or Mechanical. Things will change if you belong to a reserved category student and you might be able to score a seat in CSE. 

Here is the latest required cutoff for UIET.

Based on this ranking, the hostel is only allocated in biotechnology and engineering without the hostel in Chandigarh is costly, so try to get into the hostel. Other than this, some private hostels will give you everything essential, but they come at a huge cost.