Hello Pradeep

It can not be predicted because it will depend upon the exam difficulty level.

As you saw the fluctuation in  2016 and 2017 .

So it's all depends upon the exam and students preparation .

But you can have an idea that your general rank may be around 2000 ( exam difficulty level high)

Around 5-6 thousand ( medium)

8-9 thousand ( low).( It may vary depending upon various factors)

Category rank - 1000

2000-3000

4000-5000 approximately.

But you should prepare well and with all syllabus.

So good luck.