INOs 2026 Answer Key and Solutions: INJSO, INAO, INChO, INBO, INPhO - Indian National Olympiads

The Indian National Olympiad (INO) 2025 is one of the most prestigious examinations for students passionate about subjects like Astronomy, Chemistry, Physics, Biology, and Junior Science. After the completion of the exam, candidates eagerly await the release of the INO Answer Key 2025, which helps them analyze their performance and estimate their scores. In this article, we will provide detailed insights into the INO Answer Key 2025, including how to access it, how to use it for score calculation, and the process for raising objections.

INO 2026 Exam: Registration, Admit Card, Exam Date 

The Indian National Olympiad (INO) Exam 2026 is a prestigious competition for school students passionate about science and mathematics. Conducted under the guidance of the Homi Bhabha Centre for Science Education (HBCSE), the INO aims to identify young talent with strong conceptual understanding and logical reasoning skills. It serves as the first and most important step for students who aspire to represent India at international Science and Mathematics Olympiads, encouraging academic excellence and problem-solving ability at a national level.

INO Answer Key 2026 Release Date

The INO Answer Key 2026 is expected to be published shortly after the examination. The solved answer key & solutions shared by Aakash experts. Candidates are advised to frequently check the official INO website for updates on its release.

Once released, candidates will be able to download the answer key in PDF format.

INO 2026 Answer Key PDF – Subject-wise Download Links

INO 2025 Answer Key PDF – Subject-wise Download Links

INOs 2024 Answer Key and Solutions - INJSO, INAO, INChO, INPhO and INBO

INOs 2023 Answer Key and Solutions - INJSO, INAO, INChO, INPhO and INBO

Why is the INO Answer Key 2025 Important?

• Performance Analysis – Candidates can evaluate their expected score.
• Transparency – Ensures a fair and unbiased evaluation process.
• Error Correction – Allows students to challenge incorrect answers.

The INO Answer Key 2025 is a crucial document for all aspirants, enabling them to check their answers, calculate scores, and raise objections if needed. Keep checking the official website for updates and ensure you download the answer key on time.Stay tuned for the final results and best of luck for your INO 2025 journey!This version enhances readability, organizes information effectively, and adds clarity to each section. Let me know if you need any further refinements!

Also Read :  Click to Check for INO Results

INO Answer Key 2025 FAQs

1. When will the INO Answer Key 2025 be released?

The INO Answer Key 2025 is expected to be released within a few days to a week after the examination. Candidates should regularly check the official INO website for updates on the exact release date.

2. Where can I download the INO Answer Key 2025?

Candidates can download the INO Answer Key 2025 from the official INO website. Simply navigate to the ‘Answer Key 2025’ section, select the relevant subject, and download the PDF file.

3. How can I calculate my estimated score using the INO Answer Key?

To calculate your estimated score:

• Award +3 marks for each correct answer.
• Deduct -1 mark for each incorrect answer (if negative marking applies).
• No marks are added or deducted for unanswered questions.
  Using this marking scheme, you can estimate your performance before the official results are announced.

4. Can I challenge the INO Answer Key if I find an error?

Yes, INO allows candidates to raise objections if they find discrepancies in the answer key. You must submit your objection within the given deadline, following the prescribed format and providing supporting evidence (if applicable).

5. Will my final result be based on the provisional answer key?

No, the final result will be based on the revised answer key after considering all valid objections. The examination authority will release an updated version if necessary before declaring the final results.