IIT

Placement have no relationship with the years you drop, but with the skills you have. They want most skilled and hardworking employers for today, no matter what was your history.

It might be possible, if you are from SC/ST category.

Yes, you can pursue B.Tech. Appear for the exam and score according to the respective IITs cutoffs and you will be in.

Hello,
Yes, you're eligible to write entrance exams including JEE. But, you should also note that some private universities may be reluctant to admit you. But, if you think you've the capacity and skills to get into an IIT then what's the worry? Besides NIOS, will help you out with the percentile score. So, chill out and prepare for your board and competitive exams.
All the best.

First of all, you need to pass class 12th with 55% overall and 60% in PCM. After that, you will need to qualify JEE Mains and JEE Advanced to pursue B.tech CSE from IIT.

It is IAS because it has more syllabus.

You must be in top 400-500 rank holders in IIT JEE advance in order to get admission in IITs.

If you want to get an IIT college, first you appear in JEE mains and qualify this exam. The cut off is nearly 105 for general and next you will appear in JEE advance and qualify under 10000 rank, then you will get an IIT college.