Free NIOS Tool
NIOS Subject Combination Checker (Class 12)
Choose your medium, tick your subjects and see straight away whether your subject combination follows the NIOS Class 12 group rules. If it does not, the checker tells you which rule is broken and which subjects are causing it. Use it before you fill in your NIOS Senior Secondary admission form.
niosinfo.in is an independent website. It is not the official NIOS website.
Check your Class 12 subjects
Pick your medium, tick 5 to 7 subjects, then press Check.
How to Use the Checker
The checker takes less than a minute, and you can test as many combinations as you like.
- Select your medium, English or Hindi.
- Tick the Class 12 subjects you want. Pick at least 5 and no more than 7.
- Click “Check My Combination”.
- Read your result. If something is wrong, the checker names the exact rule, for example: “You picked 2 subjects from Group C: Physics (312) and History (315). Only 1 is allowed.”
Everything runs in your browser. Nothing you select is saved or sent anywhere.
NIOS Class 12 Subject Combination Rules
There are only a few rules to remember when you choose your NIOS subjects.
Minimum 5, maximum 7 subjects
You must take at least 5 subjects. You can add up to 2 additional subjects, which makes 7 the maximum.
1 or 2 languages from Group A
At least one subject must come from Group A. You can take two, for example English and Hindi, but not three.
Only 1 subject each from Groups C, D, E and F
This is the rule most learners break. You can take only one subject from Group C, one from Group D, one from Group E and one from Group F. If you tick two from the same group, one has to go.
No limit on Group B
Group B is the flexible group. You can take more than one subject from it.
Arjun from Lucknow wanted Physics and History because he enjoys both. The checker showed him that both are in Group C, so only one was allowed. He kept Physics, since he wants to study science, and added Economics from Group B instead.
NIOS Class 12 Subject Groups
Here is a quick view of each group. For every subject and code, see our NIOS Class 12 course guide with all subject codes.
| Group | What it contains | Example subjects and codes |
|---|---|---|
| A | Languages (pick 1 or 2) | Hindi (301), English (302), Urdu (306), Sanskrit (309), Indian Sign Language (382) |
| B | Flexible group (no limit) | Mathematics (311), Geography (316), Economics (318), Business Studies (319), Psychology (328), Painting (332) |
| C | Pick only 1 | Physics (312), History (315), Environmental Science (333), Library and Information Science (339) |
| D | Pick only 1 | Chemistry (313), Political Science (317), Mass Communication (335), Military Studies (374) |
| E | Pick only 1 | Biology (314), Accountancy (320), Introduction to Law (338), Military History (375) |
| F | Pick only 1 | Computer Science (330), Sociology (331), Tourism (337), Physical Education (373) |
Business Studies (319) was called Commerce (319) in older study material. It is the same subject code.
Popular NIOS Subject Combinations for Science, Commerce and Arts
The group system works well for science. Physics is in Group C, Chemistry in Group D, Biology in Group E and Mathematics in Group B, so a full PCMB combination is possible. Commerce and arts combinations also work, as long as you watch Groups C to F.
| Goal | Example combination | Check |
|---|---|---|
| Science (PCM) | English (302), Mathematics (311), Physics (312), Chemistry (313), Computer Science (330) | Valid in English medium. Computer Science is not offered in Hindi medium. |
| Science (PCB) | English (302), Hindi (301), Physics (312), Chemistry (313), Biology (314) | Valid. 2 languages, then 1 subject each from Groups C, D and E. |
| Science (PCMB) | English (302), Mathematics (311), Physics (312), Chemistry (313), Biology (314) | Valid. Mathematics is in Group B, so there is no clash. |
| Commerce | English (302), Mathematics (311), Economics (318), Business Studies (319), Accountancy (320) | Valid. 3 subjects from Group B and Accountancy from Group E. |
| Commerce | Hindi (301), Economics (318), Business Studies (319), Entrepreneurship (349), Accountancy (320) | Valid. 3 subjects from Group B and Accountancy from Group E. |
| Arts / Humanities | English (302), History (315), Political Science (317), Sociology (331), Geography (316) | Valid. 1 subject each from Groups C, D and F, plus Geography from Group B. |
| Arts / Humanities | Hindi (301), English (302), History (315), Political Science (317), Psychology (328) | Valid. 2 languages, History from C, Political Science from D and Psychology from B. |
These combinations follow the NIOS group rules. Colleges, university courses and entrance exams set their own subject rules, so check the requirements of the course or exam you want.
Subjects Not Available in Every Medium
Some subjects are not offered in every medium. The checker flags them for you.
- Computer Science (330): not offered in Hindi medium.
- Gender Studies (340): English medium only.
- Early Childhood Care and Education (376): English medium only.
- Krishi (383): English medium only.
Sunita from Patna studies in Hindi medium and wanted Computer Science because she hopes to work in an IT office. The checker flagged it at once. She had two options: switch to English medium, or pick another Group F subject such as Sociology (331). She chose Sociology, because she did not want to write all her exams in English.
Common Mistakes When Choosing NIOS Subjects
Most mistakes happen when learners copy a friend’s combination or rush the form.
- Picking two subjects from the same group.Fix: check the group of every subject in Groups C to F.
- Forgetting the language rule.Fix: include at least 1 and at most 2 subjects from Group A.
- Picking a subject your medium does not offer.Fix: check medium availability, especially Computer Science (330) in Hindi medium.
- Taking too many subjects.Fix: stay between 5 and 7, and add extra subjects only if they help your plans.
- Assuming a valid combination makes you eligible for a college course.Fix: check the rules of the course or entrance exam you want.
Once your subjects are fixed, plan your assignments early. Our guide to the NIOS TMA last date shows the deadline for your block.
FAQs
How many subjects can I take in NIOS Class 12?
You must take at least 5 subjects and can take up to 7. The 2 additional subjects are optional.
Can I take Physics and History together?
No. Both are in Group C, and only 1 subject is allowed from Group C. You have to choose one of them.
Can I take PCMB in NIOS?
Yes. Physics is in Group C, Chemistry in Group D, Biology in Group E and Mathematics in Group B, so none of them clash. Add at least 1 language from Group A.
Can I take Biology and Accountancy together?
No. Both are in Group E, and only 1 subject is allowed from Group E. If you want commerce subjects alongside science, look at Group B subjects such as Economics or Business Studies.
Is Computer Science available in Hindi medium?
No. Computer Science (330) is not offered in Hindi medium. You can choose English medium, or pick another Group F subject such as Sociology (331) or Tourism (337).
Is the checker result final?
No. The NIOS Subject Combination Checker is a guide based on the group rules. Your final subjects are the ones NIOS accepts on the admission portal and shows on your learner dashboard.
Does a valid combination make me eligible for JEE, NEET or a college course?
No. NIOS sets the rules for which subjects you can combine, but colleges and entrance exams set their own requirements. Check the official rules of the course or exam you want.
Once your subjects are decided, use our NIOS marks and passing calculator to see how each subject is marked, or browse all free NIOS student tools.
niosinfo.in is an independent website and is not the official NIOS website. Subject groups are based on the NIOS Academic Prospectus 2026-27. Always confirm on nios.ac.in before you submit your form.