The National Testing Agency (NTA) has opened the provisional answer key challenge window for the NEET-UG 2026 re-examination conducted on June 21. Candidates can submit objections with supporting documents through the official NEET portal until 11:50 PM on June 28 by paying a refundable fee of ?200 per question. Challenges accepted after expert review will qualify for a refund. The review will run alongside OMR evaluation to enable early declaration of the final results.source https://timesofindia.indiatimes.com/education/news/neet-ug-2026-re-exam-provisional-answer-key-challenge-process-begins-here-is-how-to-apply/articleshow/132005881.cms