Ans: After the release of NTA NEET answer key, if any medical aspirant finds a correct answer to be incorrect or vice versa, he/she can challenge the same. NTA will charge a fee of Rs. 200 per challenge for NEET answer key 2022, this fee is non-refundable, and will not be refunded even if the authorities accept the challenge. The entire process is known as the ‘challenging answer key.