JEE Main

Firstly, you need to understand how percentile is calculated it is calculated on the basis of no of Candidates in a specific shift & marks scored by them, the percentile describes about you performed better than how many students. 

In your case, according to your percentile your JEE Mains score should be between 37 to 47 marks out of 300 which means you performed better than 70.111% students in your shift.

To get the answer key for JEE Mains 7th April 2025 (shift 2) you'll need to visit the official website of National Testing Agency NTA who is exam conducting authority of JEE Mains, then browse through the homepage and click the answer key section with respect to your exam date and shift . Then download the answer key for your reference. For more information you can visit the official website of NTA.

You can download official JEE Main question papers with answer keys from the NTA site dated from 2013 through 2025. PDFs are available for both January and April 2025 sessions, including all shifts. Practice these to get familiar with question formats, difficulty levels, and time management.

There are not very good chances to get NIT with CSE branch at 47K rank in JEE mains,

But you can try for IIIT 

Following IIITs may offer you, CSE branch with the rank of 47K:

IIIT Bhopal, IIIT Ranchi, IIIT Bhagalpur,  IIIT Manipur, IIIT Lucknow, IIIT Una 

You might not get good NIT colleges and also good branch in NIT, you might have to take lower NIT and the branches will be like civil, chemical, environmental engineering

While for IIIT, you can try for IIIT Nagpur with lower branch, also, you can try. IIIT Ranchi. 

No, it's not possible to get a seat at NIT in admission process 2025 with this JEE Mains score because your score 61 would be around 70-80 percentile which is very low as compared to the cutoff percentile of NITs even it is very difficult to get a lower ranked NITs like NIT Patna, Bhagalpur if you belong to Unreserved category there may be chance if you belong to SC ST category to get low ranked NITs.