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If you feel that the answers in the answer key released is wrong then you can complain about it to the officials with the right answer and then if your answer is right the officials will change the answer in the answer key and release the final answer key. NTA has released NEET 2021 official answer key at neet.nta.nic.in.  NEET answer key 2021 has been released for all codes m, N, O and P. NEET 2021 official answer key can be challenged by paying the Rs 1000 per question. Based on the NEET answer key challenges, NTA will release NEET 2021 final answer key a few hours before the result.