The Odisha Public Service Commission (OPSC) has officially released the Subject Code list for the OCS Main (Written) Examination 2024. This update is extremely important for all candidates appearing in the OCS Main exam scheduled from 31 January 2026 to 10 February 2026.
Every candidate must correctly mention the subject code on the Question-cum-Answer Booklet. Even a small mistake in subject code entry can result in evaluation issues, delay, or rejection of answer scripts.
This article provides a complete, simplified, and error-free explanation of:
- Compulsory paper codes
- Optional subject codes
- Indian language & literature paper codes
- Common mistakes candidates make
- Practical exam-day tips
If you are appearing for OPSC OCS Main 2024, bookmark this page and read carefully.
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🔎 Quick Review – OPSC OCS Main Subject Code Update
- ✅ Exam Name: OPSC OCS Main (Written) Examination 2024
- 🗓️ Exam Dates: 31 January 2026 – 10 February 2026
- 🏛️ Conducting Body: Odisha Public Service Commission (OPSC)
- 📝 Total Subject Codes: 01 to 71
- 📌 Mandatory Action: Subject Code must be written correctly on answer booklet
- ⚠️ Risk: Wrong subject code may affect evaluation
🧾 Why Subject Codes Are So Important in OPSC OCS Main Exam?
Many candidates underestimate the importance of subject codes. However, OPSC clearly instructs candidates to mention subject codes correctly, as answer scripts are digitally and manually sorted using these codes.
Common Problems Faced by Candidates:
- Writing wrong paper code (Paper-I instead of Paper-II)
- Confusing Language vs Literature papers
- Forgetting to write the subject code entirely
- Assuming evaluators will “understand” the paper
⚠️ Reality: Evaluation is strictly code-based. Assumptions can cost you the attempt.
⚠️ What Happens If You Write the Wrong Subject Code?
Writing an incorrect subject code is not a minor mistake. It can directly impact the evaluation of your answer script.
🚨 Possible Consequences
- Your answer script may be tagged under the wrong subject
- Evaluation may be delayed due to manual verification
- In rare cases, the answer booklet may not be evaluated properly
- OPSC does not guarantee correction of such errors after submission
🛑 Important Warning for Candidates
Even if you have written the correct answers, a wrong subject code can nullify your effort.
OPSC evaluates lakhs of answer scripts, and subject code is the primary identifier used during checking.
✔️ Always double-check the subject code before handing over the booklet.
📌 Candidates can also check Exam Updates here
📘 Compulsory Papers & Subject Codes (01–07)
All candidates must attempt all compulsory papers.
- 🟢 Odia Language – 01
- 🟢 English Language – 02
- 🟢 Essay – 03
- 🟢 General Studies Paper-I – 04
- 🟢 General Studies Paper-II – 05
- 🟢 General Studies Paper-III – 06
- 🟢 General Studies Paper-IV – 07
📌 Tip: Each GS paper has a separate code. Do not repeat the same code for all GS papers.
📚 Optional Subjects & Subject Codes (08–65)
Candidates choose one optional subject, consisting of Paper-I and Paper-II.
🌾 Agriculture, Engineering & Applied Sciences
- Agriculture Paper-I – 08
- Agriculture Paper-II – 09
- Agricultural Engineering Paper-I – 10
- Agricultural Engineering Paper-II – 11
- Civil Engineering Paper-I – 20
- Civil Engineering Paper-II – 21
- Electrical Engineering Paper-I – 28
- Electrical Engineering Paper-II – 29
- Mechanical Engineering Paper-I – 48
- Mechanical Engineering Paper-II – 49
- Medical Science Paper-I – 50
- Medical Science Paper-II – 51
🐄 Life Sciences & Forestry
- Animal Husbandry & Veterinary Science Paper-I – 12
- Animal Husbandry & Veterinary Science Paper-II – 13
- Fishery Science Paper-I – 30
- Fishery Science Paper-II – 31
- Forestry Paper-I – 32
- Forestry Paper-II – 33
- Zoology Paper-I – 64
- Zoology Paper-II – 65
🔬 Pure Sciences
- Botany Paper-I – 16
- Botany Paper-II – 17
- Chemistry Paper-I – 18
- Chemistry Paper-II – 19
- Physics Paper-I – 54
- Physics Paper-II – 55
- Geology Paper-I – 36
- Geology Paper-II – 37
🧠 Humanities, Social Sciences & Governance
- Anthropology Paper-I – 14
- Anthropology Paper-II – 15
- Education Paper-I – 26
- Education Paper-II – 27
- Geography Paper-I – 34
- Geography Paper-II – 35
- History Paper-I – 38
- History Paper-II – 39
- Home Science Paper-I – 40
- Home Science Paper-II – 41
- Law Paper-I – 42
- Law Paper-II – 43
- Management Paper-I – 44
- Management Paper-II – 45
- Political Science & International Relations Paper-I – 56
- Political Science & International Relations Paper-II – 57
- Psychology Paper-I – 58
- Psychology Paper-II – 59
- Public Administration Paper-I – 60
- Public Administration Paper-II – 61
- Sociology Paper-I – 62
- Sociology Paper-II – 63
- Philosophy Paper-I – 52
- Philosophy Paper-II – 53
- Economics Paper-I – 24
- Economics Paper-II – 25
- Commerce & Accountancy Paper-I – 22
- Commerce & Accountancy Paper-II – 23
🗣️ Indian Language & Literature Papers (66–71) ✔️ Covered but reaffirmed
- English Literature Paper-I – 66
- English Literature Paper-II – 67
- Hindi Literature Paper-I – 68
- Hindi Literature Paper-II – 69
- Odia Literature Paper-I – 70
- Odia Literature Paper-II – 71
🔴 Important Difference
- English Language (02) ≠ English Literature (66/67)
- Odia Language (01) ≠ Odia Literature (70/71)
This is one of the most common mistakes made by candidates.
✍️ Where Exactly to Write the Subject Code in OPSC OCS Main Exam?
Many candidates lose marks or face evaluation issues not due to lack of preparation, but due to incorrect subject code entry. To avoid this, OPSC has issued clear instructions.
📌 Correct Method (Must Follow)
- The subject code must be written ONLY on the cover page of the Question-cum-Answer Booklet
- Write the subject code in the designated box/column provided on the booklet
- Use clear and legible handwriting
- Write the exact subject code corresponding to the paper you are attempting (Paper-I or Paper-II)
❌ Common Mistakes to Avoid
- Writing the subject code inside answer pages
- Using overwriting, cutting, or correction fluid
- Writing only the subject name without the code
- Repeating the same code for both Paper-I and Paper-II
⚠️ Once the booklet is submitted, corrections are usually not allowed.
⚠️ Common Mistakes Candidates Must Avoid
- ❌ Writing only subject name, not code
- ❌ Mixing Paper-I and Paper-II codes
- ❌ Confusing language papers with literature papers
- ❌ Writing old or assumed codes
- ❌ Leaving subject code column blank
📝 Exam-Day Best Practices (Highly Recommended)
- ✔️ Memorize your optional subject codes
- ✔️ Double-check code before submitting answer booklet
- ✔️ Use clear, legible handwriting for subject code
- ✔️ Do not overwrite or scribble subject codes
- ✔️ Verify instructions printed on answer booklet cover
🌐 Official Update & Final Note
Candidates are advised by OPSC to regularly visit the official website for updates, notices, or corrections related to the examination.
This subject code notice is official, binding, and mandatory for all OCS Main 2024 candidates.
📌 Final Words for Aspirants
The OPSC OCS Main exam is highly competitive. While preparation focuses on content and answer writing, administrative accuracy like correct subject code entry can silently decide your fate.
📢 One wrong digit can undo months of hard work.
Save this page, revise before the exam, and stay alert.
🌐 Important Links
- Official Website: opsc.gov.in
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