Indraprastha Institute of Information Technology

Hello Vinay,
It's difficult to say what percentile will be required, particularly for CSE. This is so since almost every student desires that he should get this branch. However, there is another method of finding it out. I am attaching a link that can predict college for you depending on your performance in JEE Mains. I suggest you put in different percentile and find out as to at what percentile you get admission in the institute that you desire. https://www.shiksha.com/engineering/jee-main-college-predictor
Best wishes to you.

With this percentile there are very less chances to get into a good NIT but you can still try other private institutions and universities.

Your chances for IIIT Delhi are moderate, while for LMNIIT Jaipur are good enough.

As per the previous year of trends, The closing rank at IIIT-D in asked category for outside Delhi candidate for B.Tech CSE was 17288. While in DTU the closing rank was 9349. So you have to score above 98.5 percentile in JEE Main for getting admission here.

Yes, sure you can get the CS branch in IIIT Hyderabad.

Yes, you can. Admission in IIIT Delhi in B.Tech CSE course is done through the Joint Admission Counselling (JAC) by using the JEE Main Paper-1 scores. The eligibility criteria for B.Tech CSE is given below:
Eligibility criteria: 80 percent marks in aggregate for five subjects (including Physics, Chemistry and Math) and 80% in Mathematics in class XII from CBSE Board or equivalent.
So if you have adequate JEE Main score and meet the above eligibility criteria then you can get admission here in the desired course.