ISRO ICRB Answer Key 2026 Released – Download UDC, Assistant & Steno PDF

Notice information

• The Indian Space Research Organisation (ISRO) has officially released the provisional ISRO ICRB Answer Key 2026 for the UDC, Assistant, and Steno Recruitment Examination on 25th September 2026. Candidates who appeared for the written exam on 21st September 2026 can now download the Answer Key 2026 and their response sheet as a PDF from the official website. This Solution Key allows you to evaluate your performance, calculate probable scores, and raise objections if needed. Check your responses against the official answers and plan your next steps for the final result. Read on for the direct download link, step-by-step instructions, objection procedure, and essential FAQs.

How to Download

• Follow these steps to download your ISRO ICRB Answer Key 2026:
• Step 1: Visit the official ISRO website at www.isro.gov.in.
• Step 2: Go to the Latest Notifications or Careers section.
• Step 3: Click on the link for ISRO UDC/Assistant/Steno Answer Key/Response Sheet PDF.
• Step 4: Log in using your Mobile Number and Password.
• Step 5: Download the answer key PDF and review your response sheet.
• Your response sheet includes: candidate name, application/roll number, exam date & shift, question ID, your selected responses, and the official correct answers.

• www.isro.gov.in ↗Source-provided destination — verify before signing in or paying.

How to Calculate Scores

• The exact marking scheme (marks per correct answer and negative marking) is specified in the official exam notification. Typically, ISRO follows a pattern of +1 mark for each correct answer and -0.25 or -0.33 marks for each incorrect answer, with no marks for unattempted questions. Since the provisional answer key does not include marks, you can manually calculate your estimated score as follows:
• Step 1: Count the number of questions you answered correctly (matching the official answer).
• Step 2: Count the number of incorrect answers (where your response differs from the official answer).
• Step 3: Multiply correct count by the marks per question (refer to your exam notification).
• Step 4: Multiply incorrect count by the negative marking fraction.
• Step 5: Subtract the negative marks from the positive marks to get your raw score.
• We recommend cross-checking with the official marking scheme published in the recruitment advertisement.

6. How to calculate my score using the answer key?

• Use the marking scheme from your exam notification. Typically, each correct answer carries +1 mark, and each wrong answer has a negative marking of -0.25 or -0.33. Unattempted questions get no marks.