National Testing Agency (NTA)
- On 21st August 2026, the National Testing Agency (NTA) defended its answer key challenge system, saying it ensures fairness for candidates.
- A valid challenge accepted by subject experts leads to a revised answer key applicable to all candidates.
- Thus, a single accepted objection can benefit lakhs of candidates who appeared for the examination.
- Candidates generally pay ₹200 per question to challenge an answer key.
- The challenge fee is refunded when the objection is upheld by subject experts.

