Subjects in Science After 10th: Complete List of PCM, PCB & PCMB Subjects
Complete guide to subjects in Science after 10th — PCM, PCB, and PCMB subject lists, what each subject covers, difficulty level, and how to choose between them for your career goals.
What Subjects Do You Study in Science After 10th?
Choosing Science after 10th is a big decision — and the first thing you need to understand is exactly what subjects you'll study. Science isn't just one stream; it splits into PCM (Physics, Chemistry, Maths), PCB (Physics, Chemistry, Biology), and PCMB (all four).
Here's a complete breakdown of every subject, what it covers, and how to pick the right combination.
The Three Science Combinations
PCM — Physics, Chemistry, Mathematics
Best for students aiming for Engineering, IT, Architecture, Data Science, or Defence.
| Subject | What You'll Study | Difficulty |
|---|---|---|
| Physics | Mechanics, Optics, Thermodynamics, Electricity, Magnetism, Modern Physics | High |
| Chemistry | Organic, Inorganic, Physical Chemistry, Periodic Table, Chemical Bonding | Medium-High |
| Mathematics | Calculus, Algebra, Trigonometry, Coordinate Geometry, Statistics, Probability | High |
| English | Prose, Poetry, Grammar, Writing Skills | Medium |
Optional/Additional subjects: Information Technology (IT), Computer Science, Electronics
Competitive exams this prepares you for: JEE Main & Advanced, BITSAT, MHT-CET, NDA, CUET
PCB — Physics, Chemistry, Biology
Best for students aiming for Medicine, Dentistry, Pharmacy, Biotechnology, or Allied Health Sciences.
| Subject | What You'll Study | Difficulty |
|---|---|---|
| Physics | Same as PCM — Mechanics, Optics, Thermodynamics, etc. | High |
| Chemistry | Same as PCM — Organic, Inorganic, Physical Chemistry | Medium-High |
| Biology | Botany, Zoology, Genetics, Human Physiology, Ecology, Cell Biology | Medium-High |
| English | Prose, Poetry, Grammar, Writing Skills | Medium |
Optional/Additional subjects: Psychology, IT, Biotechnology
Competitive exams this prepares you for: NEET UG, AIIMS, MHT-CET (PCB), CUET
PCMB — Physics, Chemistry, Maths + Biology
Best for students who want to keep both Engineering and Medical options open.
You study all four core subjects — Physics, Chemistry, Maths, AND Biology. This is the heaviest workload but offers maximum flexibility.
Who should take PCMB:
- Students unsure between Engineering and Medical
- Those interested in Biomedical Engineering, Bioinformatics, or Biotechnology
- High-performing students who can manage the extra subject load
Reality check: PCMB means studying 5 core subjects instead of 4. It's manageable if you're disciplined, but don't take it just to "keep options open" if you already know your direction.
Subject-by-Subject Deep Dive
Physics (Common to PCM & PCB)
11th and 12th Physics builds heavily on your 10th Science foundation. You'll go from basic concepts to advanced problem-solving.
Key topics:
- 11th: Units & Measurements, Kinematics, Laws of Motion, Work-Energy, Rotational Motion, Gravitation, Thermodynamics, Waves
- 12th: Electrostatics, Current Electricity, Magnetism, Optics, Dual Nature of Matter, Atoms & Nuclei, Semiconductors
What makes it challenging: Physics is concept-heavy and requires strong mathematical skills. If you struggled with numericals in 10th, Physics will push you further.
Chemistry (Common to PCM & PCB)
Often called the "central science," Chemistry connects Physics and Biology. It's divided into three branches.
Key topics:
- Physical Chemistry: Atomic Structure, Chemical Bonding, States of Matter, Thermodynamics, Equilibrium, Electrochemistry
- Organic Chemistry: Hydrocarbons, Haloalkanes, Alcohols, Aldehydes, Carboxylic Acids, Amines, Polymers
- Inorganic Chemistry: Periodic Table trends, p-Block & d-Block Elements, Coordination Compounds, Metallurgy
What makes it challenging: Three very different branches — Organic Chemistry requires practice, Physical Chemistry requires Maths, and Inorganic Chemistry requires memorisation.
Mathematics (PCM only)
11th-12th Maths is a significant jump from 10th. The concepts become abstract and the problems become multi-step.
Key topics:
- 11th: Sets, Relations & Functions, Trigonometry, Complex Numbers, Sequences & Series, Straight Lines, Conic Sections, Limits & Derivatives, Statistics, Probability
- 12th: Matrices & Determinants, Continuity & Differentiability, Integration, Differential Equations, Vectors, 3D Geometry, Linear Programming
What makes it challenging: Calculus (Limits, Derivatives, Integration) is completely new and forms the backbone of engineering entrance exams.
Biology (PCB only)
Biology in 11th-12th is vastly more detailed than 10th. You'll study living systems at the molecular level.
Key topics:
- 11th: Cell Biology, Plant & Animal Tissues, Morphology & Anatomy, Biomolecules, Cell Division, Plant Physiology, Digestion, Respiration, Body Fluids
- 12th: Reproduction, Genetics & Evolution, Biology in Human Welfare, Biotechnology, Ecology & Environment
What makes it challenging: Heavy on memorisation and diagrams. NEET-level Biology requires understanding 38 chapters in depth.
How to Choose: PCM vs PCB vs PCMB
Ask yourself these questions:
Take PCM if:
- You enjoy solving mathematical problems
- You're interested in Engineering, IT, Architecture, or Defence
- You want careers in Data Science, AI, or Robotics
- You scored well in Maths in 10th (70%+)
Take PCB if:
- You're drawn to Medicine, Dentistry, or Healthcare
- You enjoy Biology and understanding how living things work
- You're interested in Pharmacy, Biotechnology, or Nursing
- You have strong memory and attention to detail
Take PCMB if:
- You genuinely enjoy both Maths and Biology
- You're okay with a heavier workload (5 subjects)
- You're considering Biomedical Engineering or Bioinformatics
- You're confident you can manage your time well
Common Mistakes to Avoid
-
Don't choose Science just because of marks — Scoring 90% in 10th doesn't mean Science is right for you. Interest matters more.
-
Don't take PCMB "just in case" — It adds significant study load. Only take it if you have genuine interest in both.
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Don't ignore the optional subject — Computer Science or IT as an optional can boost your career prospects significantly.
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Don't assume Science = only Engineering/Medical — Science opens doors to 50+ career paths including Forensic Science, Environmental Science, Aviation, Defence, and more.
What About Optional & Vocational Subjects?
Most boards allow you to pick one optional/additional subject alongside your core four:
- Information Technology (IT) — Practical computer skills, coding basics
- Computer Science — Programming, data structures (more rigorous than IT)
- Electronics — Circuit design, digital electronics
- Psychology — Human behaviour, cognitive science (popular with PCB)
- Biotechnology — Genetic engineering, bioprocessing
- Physical Education — Sports science, fitness
Pro tip: Computer Science or IT is the most versatile optional — it complements both PCM and PCB career paths.
Board Differences: Maharashtra State Board vs CBSE vs ICSE
| Aspect | Maharashtra HSC | CBSE | ICSE/ISC |
|---|---|---|---|
| Subjects | Same core + Marathi compulsory | Same core, no regional language mandate | Same core + English Literature |
| Difficulty | Moderate | Moderate-High | High |
| Exam pattern | Mix of objective + subjective | Competency-based, more application | Application-heavy |
| Best for | MHT-CET, state-level exams | JEE, NEET, national-level exams | Holistic understanding |
Next Steps
Not sure which Science combination is right for you? Here's what you can do:
- Take our free career quiz — Get AI-powered recommendations based on your interests and strengths
- Try the psychometric test — A scientific 88-question assessment to find your ideal stream
- Browse Science stream details — Explore career paths for each Science combination
- Talk to a counselor — Get personalized guidance from an expert
Want to explore all stream options, not just Science? Check our complete guide on career options after 10th.