JEE

Yes, the JEE main result is used to determine admissions to the IIIT Pune BTech program. However, candidates must also achieve other eligibility requirements, one of which is achieving a minimum of 75% in class 12. In other words, the candidate needs to have received at least 75% of the possible marks in their class 12 board exam from an accredited board or university. 

The exact calculation of percentile in JEE Mains is done by the National Testing Agency (NTA) and isn't publicly available. However, the percentile score for each candidate is calculated based on their rank. Here's a simplified formula (but not the exact method used by NTA):Percentile = (Number of candidates with lower rank / Total number of candidates) * 100 

The qualifying marks for JEE Mains 2024 have already been released by the National Testing Agency (NTA). Category-wise cutoffs are:General (UR): 93.2362181 percentileEWS: 81.3266412 percentileOBC-NCL: 79.6757881 percentileSC: 60.0923182 percentileST: 46.6975840 percentilePwD: 0.0018700 percentileHowever, these are the percentile cutoffs, not marks. 

Yes, JEE Main is required for BTech at IIT Dhanbad. Candidates seeking admission at BTech course must qualify JEE Main, students selected further need to take JEE Advanced. Based on the score secured in JEE Advanced, students are called for JoSAA Counselling.

Yes, you can take admission to IGIT Sarangana with 68% in JEE Mains. The expected IGIT Sarang cutoff for the 2024 academic year is  123275 - 123285 for the Computer Science and Engineering (CSE) branch, and 243890 - 243900 for Electronics & Telecommunication Engineering which can estimated to 60-70 percentile range in JEE Main 2024. But this is only estimated cut-off not exact cut-off. I hope it will help. 

It will not be possible for you to take admission to IIIT Delhi. The lowest JEE Rank for the IIIT Delhi was 15124. You can get admission to these top colleges in Delhi:Maharaja Agrasen Institute of TechnologyNIT Delhi for Civil EngineeringJNU for Electronics and Communication EngineeringYMCA University (J. C. Bose University of Science and Technology)Bharati Vidyapeeth College of EngineeringI hope it will help. 

You have a decent AIR in JEE Mains and you can get lower branch in top NITs like:NIT Nagpur NIT SuratNIT Delhi NIT BhopalThe specific branches you can go for in these NITs are listed below-Electrical Engineering Mechanical Engineering Electronics and Communication Engineering Information Technology