JEE Main

Yes, you can go for private colleges like LPU, Gitam, etc.

Yes, if you're qualified in JEE Mains, you can get a seat at NITs and you can also go for JEE Advanced.

Take part in counseling of NIT's as 42 marks would be acceptable under SC category. But your percentage in board exams is quite less.

If you want to crack IIT only then yes.
Nothing is more important than your dream.

For which boards are you asking?

Hello Prakriti,
You have scored less than eligibility criterias for NITs, etc. in 12th. Hence, that option is ruled out. If your state is accepting JEE Mains score, then you have some chance of admission in Govt college.

With this rank, it's not possible to get any branch in any NIT. I think your marks will be below 60. So, you can't get any good private colleges for your JEE Mains rank. It is better to give some private colleges examination or you can get direct admission in VIT, SRM, etc. Through donation (management quota). You can also get many colleges on basis of your board's marks. If you get above 90%, you can get CSE in LPU without any donation.
Best of luck.

As per new rule, 2 attempts will be given for JEE Advanced and 3 attempts for JEE Mains. there also age limitations. You can also check it at www.jeemain/advance.in

Admission is through COMEDK or KCET or management quota, but I don't think you can come through JEE Mains marks.

If you want to go into engineering field so you have to try once more for JEE Mains & Advance preparation. Now, there is no role of bords marks in JEE Mains counseling. So, don't fear. If you're not interested in engineering field then go for any other field in graduation.