NDA 1 Answer Key 2026 has been released on 16 April 2026 on the UPSC website. Candidates who appeared in the UPSC NDA 1 Exam 2026 can now download the provisional answer key in PDF format for both the Mathematics and General Ability Test (GAT) papers to evaluate their performance and estimate their expected score before the official result is declared.

The Union Public Service Commission (UPSC) conducted the NDA 2026 examination on 12 April 2026 to shortlist candidates for admission into the Army, Navy, Air Force wings and Indian Naval Academy courses.

The NDA 1 Provisional Answer Key 2026 is useful for defence candidates as it helps in analysing accuracy, identifying mistakes, and understanding the expected cut-off marks. In this article, you will get complete details about the NDA Maths & GAT Answer Key 2026 PDF, steps to download it, PDF download links and how to calculate your marks.

UPSC NDA 1 Answer Key 2026 Out

The NDA exam is conducted by UPSC twice a year to recruit candidates for the Army, Navy, and Air Force wings. Along with the answer key, UPSC activates the NDA Question Paper Representation (QPRep) window, where candidates can raise objections against the question paper and provisional answer key.

Check the table below for important details of the UPSC NDA Exam 2026 updates.

UPSC NDA 1 Answer Key Update 2026
Exam Name	NDA & NA Examination 2026
Conducting Body	Union Public Service Commission (UPSC)
Exam Level	National
UPSC NDA 1 Answer Key Released for	Mathematics & GAT subjects
UPSC NDA Answer Key Release Date 2026	16 April 2026
UPSC NDA 1 Answer Key Objection Dates	18 to 22 April 2026
Official Website	upsc.gov.in
UPSC NDA 1 Answer Key 2026 Objection Notice PDF

How to Download NDA 1 Answer Key 2026 PDF?

Candidates can download the NDA Answer Key 2026 PDF for both papers separately. The provisional answer key can be downloaded by following the steps given below:

Visit the official UPSC website.
On the homepage, open the “Examination” tab and click on “Answer Keys” from the dropdown menu.
Now, click on the link “Provisional Answer Key: National Defence Academy and Naval Academy Examination (I), 2026”.
Download both subjects' PDFs and check the answers to calculate your marks using the UPSC marking scheme.
Download and save the NDA 1 Answer Key PDF for future use

Candidates are advised to keep their question paper handy while checking the NDA Maths & NDA GAT Answer Key 2026.

UPSC NDA Answer Key 2026 PDF Download Link

UPSC NDA Answer Key 2026 can be downloaded by following the steps mentioned above from the official UPSC website. Candidates can access the NDA 1 Answer Key 2026 PDF for both Mathematics and GAT papers without any login requirement. For your convenience, we have provided the direct download links to the official PDF here:

NDA 1 Maths Answer Key 2026 PDF Download Link

NDA 1 GAT Answer Key 2026 PDF Download Link

NDA Answer Key 2026: Marking Scheme & Score Calculation

The NDA Answer Key 2026 provides correct answers for both Mathematics and General Ability Test (GAT) papers. Candidates can use the marking scheme given below to calculate their expected score.

Subject	Total Questions	Maximum Marks	Marks per Correct Answer	Negative Marking
Mathematics	120	300	2.5 marks	-0.83 marks
General Ability Test (GAT)	150	600	4 marks	-1.33 marks

How to Calculate Marks Using NDA Answer Key 2026:

Add marks for all correct answers
Subtract marks for incorrect answers
Do not include unattempted questions

Example:

If you score:

80 correct answers in Maths → your total will be 80 × 2.5 = 200 marks
20 incorrect answers → your total will be 20 × 0.83 = 16.6 marks deducted

Final Score = 200 – 16.6 = 183.4

By using the UPSC NDA Answer Key 2026, candidates can get a clear estimate of their performance before the result is announced.

UPSC NDA 1 Answer Key 2026 Objection Link

UPSC has provided candidates an opportunity to raise objections against the NDA 1 Provisional Answer Key 2026 within a limited time window. Candidates can submit their representations online through the official website from 18 April (6:00 PM) to 22 April 2026 (till 6:00 PM). No objections will be accepted by the commission after the deadline or through any offline mode.

Steps to Raise Objection against NDA 1 Provisional Answer Key:

Visit the official UPSC website
Go to the Examinations tab and open the Representations on Question Paper & Provisional Answer Keys option.
Select NDA 1 Examination 2026 link from the list of exams.
Log in using required credentials.
Submit your objection for the relevant question or the UPSC NDA Provisional Answer Key 2026.

Submit NDA Answer Key Objection Here (link active on 18 April 2026 at 06:00 PM)

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