INBO 2026 Answer Key (Out): Download PDF, Check Solutions, Marking Scheme

INBO 2026 Answer Key: The Indian National Biology Olympiad (INBO) 2026, organized by the Homi Bhabha Centre for Science Education (HBCSE), was conducted on 1st February 2026 across various centres in India. The examination comprised 35 questions designed to assess candidates’ conceptual understanding of Biology.

The official INBO 2026 Answer Key was released on 3rd February 2026, enabling candidates to verify their responses using the official solutions. The paper included Multiple-Choice Questions (MCQs), Multiple Select Questions (MSQs), and long-form descriptive questions.

Also Read: INBO 2026 Question Paper

INBO 2026 Answer Key (Out)

The INBO 2026 Answer Key has been officially released on 3rd February 2026 by the Homi Bhabha Centre for Science Education (HBCSE). The answer key contains correct solutions to all questions asked in the Indian National Biology Olympiad conducted on 1st February 2026, helping candidates verify responses and estimate their expected scores.

INBO 2026 Answer Key Download Details

Candidates can download the INBO 2026 Answer Key from the official HBCSE website, as the link is now active. The released answer key allows candidates to accurately evaluate their performance and estimate their expected scores.

INBO 2026 Answer Key Download

The INBO 2026 Answer Key has been released by HBCSE, allowing participants to check their responses against the official solutions and assess their performance accurately.

INBO 2026 Answer Key

INBO 2026 Exam Marking Scheme

Understanding the marking scheme is crucial for candidates to accurately calculate their scores using the answer key. The INBO 2026 paper is typically divided into sections, each with its own scoring pattern.

• Section I (MCQs): For every correct answer, candidates are awarded +3 marks. An incorrect answer leads to a deduction of -1 mark.

• Section II (MSQs): These questions may have more than one correct option. Generally, there is no negative marking for this section.

• Section III (Long Questions): This section consists of descriptive questions that require detailed answers and demonstration of problem-solving steps.

How to Utilize the INBO 2026 Answer Key

Now that the INBO 2026 Answer Key has been released, candidates can follow these steps to verify their responses and accurately estimate their scores. This process helps assess overall performance and evaluate the chances of qualifying for the next stages of the Olympiad.

1. Download the PDF: Access and download the official answer key document from the HBCSE website.

2. Compare Answers: Carefully match your attempted answers from the examination with the solutions provided in the answer key.

3. Calculate Marks: Tally your scores. For each correct MCQ, add 3 points, and for each incorrect MCQ, subtract 1 point.

Estimate Score: Sum up all your points to arrive at an estimated total score. This predicted score offers insight into your potential progression to the next stage, such as the OCSC