NIT

According to me 65 marks is not enough,for a sc cast student NIT cutoff is expected at nearby 75 marks.
you can go for your state universities or private universities like lpu, they will provide you admission and better scholarship.

If you get that rank, you'll surely get NIT-Trichy and NIT-Warangal, both are very good though. I would suggest you to focus on your advanced exam, as better opportunity awaits. You may get into top IITs, if you do well there to so focus on your study for now, at least till a month.

Well, I can't say better. But, it is equivalent as top NITs IT department of DTU is under COE department.

No, there are no possibilities to get NITs but you will get the best college in your city. Best of luck for your future.
Don't lose your hope.

While filling mock seat allocation apply for all the colleges as well as for core branches other than mech. So, you will be having a rough idea regarding the college as well as for branch and in starting rounds if you got called up, then you can stick the same college or opt for slide or float for different branch.

For NITs, you have to clear JEE main exam.

There are less chance to get top NITs for CSE branch with 180 marks if you are from general category. If you are from SC, ST category then it may be possible to get a good NIT. In general category, you should get 220 and above marks in JEE Mains. Good luck!

He can get any mid-level or level NIT like Srinagar or Patna.

You can get medium standard NIT but branch can be good.

I can't figure it out but they are very less in numbers around 170+. .