If u are interested for cse and IT then a general rank of 140+ is required.

For a core branch( electrical , mech) u need a marks of 110+ .

And for other branches like civil etc u need marks around 81+.

Even if u get a seat in cet , getting a hostel seat could be difficult as it is alloted on basis of rank. IF u dont get a hostel seat then u might have to increase ur hostel budget for making ur own arrangments. Looking at this you may ceratinly get an idea of, if you can hold a seat or not.