NIOS Chemistry Syllabus Class 12 Full Guide, including Study Materials and Support
NIOS Chemistry Syllabus Class 12 - Structured Support to Help You Succeed in Science
NIOS Chemistry 313 Syllabus Class 12 – Complete Guide 2026
If you're studying NIOS Class 12 Chemistry and want a clear breakdown of what the syllabus covers, how marks are distributed, and which lessons appear in TMA versus the board exam, this complete guide to NIOS Chemistry 313 Syllabus Class 12 gives you everything organized in one place so your preparation stays focused and efficient.
Quick Overview – NIOS Chemistry 313 Class 12
| Detail | Information |
| Subject | Chemistry |
| Subject Code | 313 |
| Total Lessons | 32 |
| TMA Lessons | 12 (40% of syllabus) |
| Public Exam Lessons | 20 (60% of syllabus) |
| Theory Marks | 80 |
| Practical Marks | 20 |
| Total Marks | 100 |
| Exam Duration | 3 hours |
| Total Modules | 8 |
Overview of NIOS Class 12 Chemistry Syllabus
The NIOS Class 12 Chemistry 313 Syllabus covers 8 modules across 32 lessons divided into Physical, Inorganic, and Organic Chemistry. Theory paper carries 80 marks and practicals carry 20 marks totaling 100. The syllabus covers everything from atomic structure and chemical bonding to organic reactions and everyday chemistry applications.
The syllabus splits into two components. Twelve lessons go into TMA carrying 40% weightage. Twenty lessons go into public examination carrying 60% weightage. Recognizing this split early helps you plan preparation intelligently.
Chemistry of Elements and Chemistry of Organic Compounds each carry 18 marks in content weightage. Together they account for 36 marks out of 80 theory marks, making them your highest priority modules. Chemical Dynamics at 12 marks and Atomic Structure at 10 marks are your next priorities.
For complete NIOS senior secondary context, reviewing the full NIOS Class 12 syllabus across subjects helps plan your overall preparation schedule.
Course Objectives of Chemistry 313
The NIOS Chemistry 313 Class 12 Syllabus develops understanding of chemical principles across physical, inorganic, and organic domains. Students connect theoretical concepts with laboratory observations and real-world applications.
The course builds systematically from basic atomic concepts through chemical reactions to complex organic chemistry. Each module extends previous knowledge creating a connected understanding of chemistry as a whole subject.
By completing this syllabus, students develop analytical skills for laboratory work, problem-solving ability for numerical chemistry, and conceptual understanding supporting further studies in medicine, pharmacy, engineering, and applied sciences.
Complete Unit List – NIOS Chemistry 313
The syllabus covers 16 units organized as follows:
- Unit 1: Solid State
- Unit 2: Solutions
- Unit 3: Electrochemistry
- Unit 4: Chemical Kinetics
- Unit 5: Surface Chemistry
- Unit 6: General Principles and Processes of Isolation of Elements
- Unit 7: p-Block Elements
- Unit 8: d- and f-Block Elements
- Unit 9: Coordination Compounds
- Unit 10: Haloalkanes and Haloarenes
- Unit 11: Alcohols, Phenols, and Ethers
- Unit 12: Aldehydes, Ketones, and Carboxylic Acids
- Unit 13: Organic Compounds Containing Nitrogen
- Unit 14: Biomolecules
- Unit 15: Polymers
- Unit 16: Chemistry in Everyday Life
Marks Distribution – Theory 80 + Practical 20
| Component | Marks |
| Theory | 80 |
| Practical | 20 |
| Grand Total | 100 |
Theory paper carries 80 marks answered in 3 hours. Practicals carry 20 marks assessed through laboratory work. Both components are compulsory and together determine your final result.
Section-wise Theory Distribution
| Section | Marks |
| Solutions, Electrochemistry, Chemical Kinetics, Surface Chemistry | 23 |
| General Principles, p-Block, d/f-Block, Coordination Compounds | 19 |
| Haloalkanes, Alcohols, Aldehydes, Amines, Biomolecules | 28 |
| Solid State, Polymers, Everyday Chemistry | 10 |
| Total Theory | 80 |
Organic Chemistry section covering Haloalkanes, Alcohols, Aldehydes, Amines, and Biomolecules carries 28 marks - the highest single section. If you focus heavily on Organic Chemistry, you're targeting more than a third of your theory marks.
Weightage to Content Areas
| Module | Marks |
| Some Basic Concepts of Chemistry | 04 |
| Atomic Structure and Chemical Bonding | 10 |
| States of Matter | 08 |
| Chemical Energetics | 06 |
| Chemical Dynamics | 12 |
| Chemistry of Elements | 18 |
| Chemistry of Organic Compounds | 18 |
| Chemistry in Everyday Life | 04 |
| Total | 80 |
Chemistry of Elements and Chemistry of Organic Compounds tie at 18 marks each. Combined they carry 36 marks from 80. Chemical Dynamics at 12 and Atomic Structure at 10 are your next priorities. Together these four modules account for 58 marks - nearly three-quarters of your theory paper.
Detailed Module-wise Syllabus Structure
Module I: Some Basic Concepts of Chemistry
This foundational module has one public examination lesson.
Public examination lesson: Lesson 1 (Atoms, Molecules and Chemical Arithmetic).
Content weightage is 4 marks. Though fewer marks, these basics underpin everything else. Mole concept, atomic mass, molecular mass, stoichiometry - master these thoroughly as they appear in numerical problems throughout the paper.
Module II: Atomic Structure and Chemical Bonding
TMA lesson: Lesson 3 (Periodic Table and Periodicity in Properties).
Public examination lessons: Lesson 2 (Atomic Structure), Lesson 4 (Chemical Bonding).
Content weightage is 10 marks. Atomic Structure covers Bohr model, quantum numbers, orbitals, and electronic configuration. Chemical Bonding covers ionic, covalent, and coordinate bonds, VSEPR theory, and hybridization. Both public examination lessons need thorough preparation.
Module III: States of Matter
TMA lessons: Lesson 5 (The Gaseous State and Liquid State), Lesson 6 (The Solid State), Lesson 8 (Colloidal).
Public examination lesson: Lesson 7 (Solutions).
Content weightage is 8 marks. Solutions is the only public examination lesson here, covering types of solutions, concentration expressions, Raoult's law, colligative properties, and osmosis. Give Solutions thorough attention since it's the module's sole exam contribution.
Module IV: Chemical Energetics
TMA lesson: Lesson 10 (Spontaneity of Chemical Reactions).
Public examination lesson: Lesson 9 (Chemical Thermodynamics).
Content weightage is 6 marks. Chemical Thermodynamics covers first and second laws of thermodynamics, enthalpy, entropy, Gibbs free energy, and spontaneity criteria. Numerical problems from thermodynamics appear regularly in exams.
Module V: Chemical Dynamics
TMA lessons: Lesson 11 (Chemical Equilibrium), Lesson 14 (Chemical Kinetics), Lesson 15 (Adsorption and Catalysis).
Public examination lessons: Lesson 12 (Ionic Equilibrium), Lesson 13 (Electrochemistry).
Content weightage is 12 marks. Ionic Equilibrium covers acids, bases, pH, buffer solutions, and solubility products. Electrochemistry covers electrochemical cells, electrode potentials, Faraday's laws, and corrosion. Both public examination lessons carry good marks and need thorough practice.
Module VI: Chemistry of Elements
TMA lessons: Lesson 16 (Occurrence and Extraction of Metals), Lesson 19 (p-Block Elements and Their Compounds-I).
Public examination lessons: Lesson 17 (Hydrogen and s-Block Elements), Lesson 18 (General Characteristics of p-Block Elements), Lesson 20 (p-Block Elements and Their Compounds-II), Lesson 21 (d-Block and f-Block Elements), Lesson 22 (Coordination Compounds).
Content weightage is 18 marks with five public examination lessons. This module has the most public examination lessons making it a major focus area. d-Block elements, p-Block compounds, and Coordination Compounds are particularly important.
Module VII: Chemistry of Organic Compounds
No TMA lessons. All seven lessons are public examination lessons.
Public examination lessons: Lesson 23 (Nomenclature and General Principles), Lesson 24 (Hydrocarbons), Lesson 25 (Compounds of Carbon Containing Halogens), Lesson 26 (Alcohols, Phenols and Ethers), Lesson 27 (Aldehydes, Ketones and Carboxylic Acids), Lesson 28 (Compounds of Carbon Containing Nitrogen), Lesson 29 (Biomolecules).
Content weightage is 18 marks. Every organic chemistry lesson goes straight toward your board examination marks. Organic chemistry requires understanding reaction mechanisms, naming compounds, predicting products, and writing reaction conditions. Regular practice of organic reactions is essential.
Module VIII: Chemistry in Everyday Life
TMA lessons: Lesson 30 (Drugs and Medicines), Lesson 32 (Environmental Chemistry).
Public examination lesson: Lesson 31 (Soaps, Detergents and Polymers).
Content weightage is 4 marks. Though fewer marks, this module is relatively straightforward and scoring. Understanding how soaps work, polymer types, and their applications helps secure these marks comfortably.
Looking at NIOS Class 12 Previous Year Question Paper for Chemistry shows how these modules get tested in actual examinations.
Syllabus Breakdown - NIOS Chemistry (313) Syllabus Class 12
Course Structure: The NIOS Class 12 Chemistry (313) syllabus for 2025-26 is divided into 14 units, covering Physical, Inorganic, and Organic Chemistry. Total marks: 80 (Theory) + 20 (Practical), totaling 100 marks.
- Unit 1: Solid State
- Unit 2: Solutions
- Unit 3: Electrochemistry
- Unit 4: Chemical Kinetics
- Unit 5: Surface Chemistry
- Unit 6: General Principles and Processes of Isolation of Elements
- Unit 7: p-Block Elements
- Unit 8: d- and f-Block Elements
- Unit 9: Coordination Compounds
- Unit 10: Haloalkanes and Haloarenes
- Unit 11: Alcohols, Phenols, and Ethers
- Unit 12: Aldehydes, Ketones, and Carboxylic Acids
- Unit 13: Organic Compounds Containing Nitrogen
- Unit 14: Biomolecules
- Unit 15: Polymers
- Unit 16: Chemistry in Everyday Life
Marks Distribution (Theory - 80 Marks):
| Section | Marks |
|---|---|
| Solutions, Electrochemistry, Chemical Kinetics, Surface Chemistry | 23 |
| General Principles, p-Block, d/f-Block, Coordination Compounds | 19 |
| Haloalkanes, Alcohols, Aldehydes, Amines, Biomolecules | 28 |
| Solid State, Polymers, Everyday Chemistry | 10 |
| Total Theory | 80 |
| Practical | 20 |
| Grand Total | 100 |
For the full official syllabus PDF, click here to request on WhatsApp.
Chemistry (313)
Bifurcation
Total no. of Lessons = 32
| MODULE (No. & name) |
I TMA (40%) (No. of lessons–12) |
II Public Examination (60%) (No. of lessons–20) |
||
| Module I Some Basic concepts of Chemistry |
– | Lesson–1 (Atoms, Molecules and Chemical Arithmetic) | ||
| Module II Atomic Structure and Chemical Bonding |
Lesson–3 (Periodic Table and Periodicity in Properties) | Lesson–2 (Atomic Structure) Lesson–4 (Chemical Bonding) |
||
| Module III States of Matter |
Lesson–5 (The Gaseous State and Liquid State) Lesson–6 (The Solid State) Lesson–8 (Colloidal) |
Lesson–7 (Solutions) | ||
| Module IV Chemical Energetics |
Lesson–10 (Spontaneity of Chemical Reactions) | Lesson–9 (Chemical Thermodynamics) | ||
| Module V Chemical Dynamics |
Lesson–11 (Chemical Equilibrium) Lesson–14 (Chemical Kinetics) Lesson–15 (Adsorption and Catalysis) |
Lesson–12 (Ionic Equilibrium) Lesson–13 (Electrochemistry) |
||
| Module VI Chemistry of Elements |
Lesson–16 (Occurrence and Extraction of Metals) Lesson–19 (p-Block Elements and Their Compounds–I) |
Lesson–17 (Hydrogen and s-Block Elements) Lesson–18 (General Characteristics of p-Block Elements) Lesson–20 (p-Block Elements and Their Compounds–II) Lesson–21 (d-Block and f-Block Elements) Lesson–22 (Coordination Compounds) |
||
| Module VII Chemistry of Organic Compounds |
– |
Lesson–23 (Nomenclature and General Principles) Lesson–24 (Hydrocarbons) Lesson–25 (Compounds of Carbon Containing Halogens) Lesson–26 (Alcohols, Phenols and Ethers) Lesson–27 (Aldehydes, Ketones and Carboxylic Acids) Lesson–28 (Compounds of Carbon Containing Nitrogen) Lesson–29 (Biomolecules) |
||
| Module VIII Chemistry in Everyday Life |
Lesson–30 (Drugs and Medicines) Lesson–32 (Environmental Chemistry) |
Lesson–31 (Soaps, Detergents and Polymers) | ||
Lesson-wise Bifurcation
TMA Lessons – 12 Lessons (40% of Syllabus)
- Lesson 3: Periodic Table and Periodicity in Properties
- Lesson 5: The Gaseous State and Liquid State
- Lesson 6: The Solid State
- Lesson 8: Colloidal
- Lesson 10: Spontaneity of Chemical Reactions
- Lesson 11: Chemical Equilibrium
- Lesson 14: Chemical Kinetics
- Lesson 15: Adsorption and Catalysis
- Lesson 16: Occurrence and Extraction of Metals
- Lesson 19: p-Block Elements and Their Compounds-I
- Lesson 30: Drugs and Medicines
- Lesson 32: Environmental Chemistry
Public Examination Lessons – 20 Lessons (60% of Syllabus)
- Lesson 1: Atoms, Molecules and Chemical Arithmetic
- Lesson 2: Atomic Structure
- Lesson 4: Chemical Bonding
- Lesson 7: Solutions
- Lesson 9: Chemical Thermodynamics
- Lesson 12: Ionic Equilibrium
- Lesson 13: Electrochemistry
- Lesson 17: Hydrogen and s-Block Elements
- Lesson 18: General Characteristics of p-Block Elements
- Lesson 20: p-Block Elements and Their Compounds-II
- Lesson 21: d-Block and f-Block Elements
- Lesson 22: Coordination Compounds
- Lesson 23: Nomenclature and General Principles
- Lesson 24: Hydrocarbons
- Lesson 25: Compounds of Carbon Containing Halogens
- Lesson 26: Alcohols, Phenols and Ethers
- Lesson 27: Aldehydes, Ketones and Carboxylic Acids
- Lesson 28: Compounds of Carbon Containing Nitrogen
- Lesson 29: Biomolecules
- Lesson 31: Soaps, Detergents and Polymers
QUESTION PAPER DESIGN
Subject: Chemistry (313) Course: Senior Secondary
Maximum Marks: 80 Time: 3 Hours.
1. Weightage by Objectives
| S. No. | Objectives | Marks | % of Total Mark |
|---|---|---|---|
| 1. | Knowledge | 20 | 25 |
| 2. | Understanding | 36 | 45 |
| 3. | Application | 24 | 30 |
| Total | 80 | 100 | |
Understanding carries the highest weightage at 45%. Nearly half the paper tests genuine comprehension of chemistry concepts. This means studying to truly understand why reactions happen, what mechanisms operate, and how principles connect is more valuable than surface memorization.
Application carries 30% which means problem-solving and numerical chemistry matter significantly. Regular practice of calculations, reaction prediction, and applied questions prepares you for this component.
2. Weightage to Forms of Questions
| Forms of Questions | No. of Question | Marks per question | Total Marks |
|---|---|---|---|
| Objective Type Questions | |||
| 1 Marks MCQ | 16 | 1 | 16 |
|
2×12=24 Marks Objective type (with two sub-points each are of 1 marks) (Fill in the blanks, match the column, paragraph or case-based Questions, one-word questions, True False, etc.) |
12 | 2 | 24 |
| Total | 28 | 40 | |
| Subjective Type Questions | |||
| Very Short Answer (VSA) - 2 | 9* | 2 | 18 |
| Short Answer (SA) - 3 | 4** | 3 | 12 |
| Long Answer (LA) - 5 | 2*** | 5 | 10 |
| Total | 15 | 40 | |
| Grand Total | 43 | 80 |
Note:
✔ * 4 questions will have internal choices.
✔ ** 2 questions will have internal choices.
✔ *** 2 questions will have internal choices.
Internal choice note: 4 VSA questions have internal choices, 2 SA questions have internal choices, 2 LA questions have internal choices.
Objective section carries 40 marks making it exactly half your theory paper. 16 MCQs plus 12 objective questions with sub-parts. Mastering objective questions is the single most efficient way to secure marks in Chemistry.
Objective type questions include fill in the blanks, match the column, paragraph or case-based questions, one-word answers, and True/False. Practice all these formats specifically.
3. Weightage to Content Areas
| S. No. | Module | Marks |
|---|---|---|
| 1. | Some Basic Concepts of Chemistry | 04 |
| 2. | Atomic Structure and Chemical Bonding | 10 |
| 3. | States of Matter | 08 |
| 4. | Chemical Energetics | 06 |
| 5. | Chemical Dynamics | 12 |
| 6. | Chemistry of Elements | 18 |
| 7. | Chemistry of Organic Compounds | 18 |
| 8. | Chemistry in Everyday Life | 04 |
| Total | 80 | |
4. Difficulty level of Question Paper
| Level | Marks | % of marks given |
|---|---|---|
| Difficult | 16 | 20 |
| Average | 40 | 50 |
| Easy | 24 | 30 |
| Total | 80 | 100 |
80% of the paper is average to easy level. Students who prepare all modules systematically can realistically target 60+ marks in theory. The 20% difficult questions need deeper preparation but shouldn't distract from first securing the easier 80%.
Internal Assessment TMA Structure
TMA carries 40% of syllabus coverage through 12 lessons. TMA assignments test your understanding of periodic properties, states of matter, chemical dynamics, element chemistry, and everyday applications.
Good TMA answers demonstrate genuine understanding, proper use of chemical terminology, balanced equations where required, and clear logical explanations. Don't just state facts - explain the chemistry behind your answers.
Submit TMAs well before deadlines. NIOS announces specific TMA submission windows and missing these causes assessment issues affecting your final result.
We at Unnati Education provide fully solved TMA sets for NIOS Chemistry 313 covering all 12 TMA lessons. Both typed and handwritten formats are available following NIOS guidelines precisely.
Chemistry Practical Syllabus – 20 Marks
Practicals carry 20 marks assessed through laboratory work at your NIOS study center. Practical assessment includes experiment performance, practical file evaluation, and viva examination.
Common Chemistry practical experiments include qualitative salt analysis identifying cations and anions, titration experiments measuring concentration, preparation of organic compounds, colligative property measurements, and electrochemical cell experiments.
Your practical file needs proper documentation for each experiment: aim, apparatus, materials, theory, procedure, observations, calculations, result, and precautions. Well-organized files with accurate observations contribute significantly to practical marks.
Viva questions test your understanding of experimental chemistry. Be ready to explain why specific reagents are used, what happens at each step, and how to interpret your results. Theoretical understanding of practical work improves viva performance.
We provide complete ready-to-submit practical files for NIOS Chemistry 313. All experiments documented properly with observations and calculations following NIOS practical requirements.
Important Topics for Scoring High
Chemistry of Organic Compounds is your highest priority because it carries 18 marks and all seven lessons are public examination topics. Master IUPAC nomenclature first. Then study reaction mechanisms for each functional group systematically. Practice predicting products and writing conditions for organic reactions.
Chemistry of Elements also carries 18 marks with five public examination lessons. Focus on d-block and f-block properties, p-block compound reactions, and coordination compound nomenclature and bonding theories.
Chemical Dynamics at 12 marks includes both Ionic Equilibrium and Electrochemistry in public examination. Ionic equilibrium numericals on pH and buffer solutions need regular practice. Electrochemistry numerical problems on cell EMF and electrolysis appear consistently.
Atomic Structure and Chemical Bonding at 10 marks needs thorough conceptual understanding. Quantum numbers, orbital shapes, hybridization, and bond polarity concepts appear regularly across different question types.
Preparation Strategy for NIOS Chemistry 312 Board Exam
Start by clearly mapping 20 public examination lessons versus 12 TMA lessons. This focus ensures you allocate study time proportionally to marks contribution.
Organic Chemistry needs early and sustained attention. Seven consecutive lessons on organic compounds build on each other. Starting Nomenclature and General Principles first and then progressing through functional groups creates the right foundation.
Numerical chemistry requires daily practice. Mole concept calculations, thermodynamics problems, electrochemistry calculations, and pH problems appear across multiple question types. Solve numerical problems from each chapter daily, not just before exams.
For Inorganic Chemistry covering Elements modules, create comparison tables. Properties of d-block elements, characteristics of p-block groups, and coordination compound formulas are easier to remember when organized visually in tables rather than memorized as separate facts.
MCQ practice needs dedicated time. 16 MCQs carry 16 marks. Wrong answer elimination technique increases accuracy. Practice timed MCQ sets covering all modules regularly throughout your preparation.
Reviewing NIOS Class 12 question paper from multiple years identifies which topics appear most consistently and how difficulty varies across years.
Full mock tests under 3-hour timed conditions build exam temperament. Sit with a previous year paper, complete it without help, then analyze where you lost marks and what needs more attention.
NIOS Class 12 Chemistry Study Material - All You Need to Score Well
The NIOS class 12 Chemistry syllabus can seem daunting; however, with the right help provided by Unnati Education, it becomes easy to manage. Our team has developed an entire set of materials based on the Chemistry (313) course to aid students from all backgrounds in terms of medium, background, and learning speed.
We offer:
- Unit-wise notes that simplify theorems, derivations, and reactions
- Completed tasks (TMAs) to be submitted for the exam
- Question papers from the last 5 years with answers
- The mock tests of the current year, as well as samples of papers
- One-on-one classes and questions, and discussions
- Weekly practice tests and answering writing exercises
- Practical guidance in all aspects, with Lab file support
No matter if your home is Delhi, UP, Bihar, Mumbai, or studying abroad in the UAE or Nepal, we provide rapid assistance.
How Unnati Education Supports Chemistry Students
We've specialized in NIOS student support since 2010 and have helped thousands of Chemistry students successfully across all modules.
Our solved TMA sets cover all 12 TMA lessons with complete step-by-step solutions. Both typed and handwritten formats are available. Solutions follow NIOS guidelines ensuring quality internal assessment marks.
Complete practical files ready for submission cover all required experiments with proper documentation. This saves preparation time and ensures your practical submission meets NIOS requirements.
Previous year question papers with detailed solutions for NIOS Chemistry 313 are available. Working through multiple years of actual papers is the most effective preparation method for board examinations.
Subject-wise study notes covering all 32 lessons include important reactions, mechanisms, numerical examples, and exam-focused summaries. Revision becomes faster and more targeted with well-organized notes.
Personal support via phone and WhatsApp resolves doubts promptly. Chemistry doubts - whether on reaction mechanisms, numerical problems, or organic conversions - need quick resolution to keep your preparation momentum going.
Why Unnati Education for NIOS Chemistry Syllabus Class 12
Unnati Education goes beyond just syllabus delivery. We develop custom, outcome-driven programs for students who require assistance. Chemistry is among our strengths.
We assist in:
- Step-by-step theoretical teaching and computational solving
- Drawing diagrams for practice in reactions and mechanisms
- Mock test evaluations and feedback from the tutor
- Hindi + English medium coaching
- Online and Offline batches to fit your schedule
- Access to fast access banknotes, TMAs, or question banks
With more than 10 years of expertise, our Chemistry teachers concentrate on helping students become test-ready, not only syllabus-complete.
NIOS Chemistry Kit by Unnati Education - Complete Learning Support
Our specially selected 12th-grade Chemistry kit is specially curated. 12 Chemistry Kit contains:
- Unit notes and topic highlights
- Important question banks
- Solutions to TMAs for both media
- Practical tips and viva tricks
- Answer keys and sample papers
- Weekly doubt-clearing sessions via WhatsApp and Zoom
Students trust our system of organization, especially when faced with exams or revisions that are last-minute. Everything you need to complete the NIOS chemistry syllabus for class 12 is a phone call away.
Final Words: Make Sure You're Prepared with NIOS Chemistry Syllabus Class 12
The syllabus for the chemistry class of NIOS 12 is a good score when approached with discipline, good instructions, and up-to-date materials. When you're preparing for an extended break or beginning fresh, Unnati Education ensures that you comprehend every section of the class 12 NIOS chemistry syllabus and finish each homework, project, and final exam in a timely manner.
Our experienced team, well-organized study plans, and ongoing student support make us the preferred choice of thousands of students across India and around the world. Join us today and learn smarter, faster, more efficiently, and better.
Your Chemistry Preparation Starts Here
The NIOS Chemistry 313 Syllabus Class 12 is comprehensive but structured clearly across 8 modules. With 32 lessons split between TMA and public examination, strategic preparation makes thorough coverage achievable within your timeline.
Organic Chemistry and Elements modules together carry 36 marks. Master these alongside Chemical Dynamics and Atomic Structure and you've covered the majority of your theory paper.
At Unnati Education, we provide everything needed - solved TMAs, practical files, previous year papers, study notes, and personal guidance for Chemistry students.
If you need solved questions, study materials, practical files, previous year papers, or any guidance for NIOS Chemistry Class 12 - contact us.
FAQs - NIOS Class 12 Chemistry (313)
How many modules and lessons are there in NIOS Chemistry 313 Class 12?
The NIOS Chemistry 313 Syllabus contains 8 modules covering 32 total lessons. These divide into 12 lessons for TMA carrying 40 percent weightage and 20 lessons for public examination carrying 60 percent weightage. Theory paper carries 80 marks while practicals carry 20 marks making the complete assessment total 100 marks for the academic year.
Which module carries the highest marks in NIOS Class 12 Chemistry?
Chemistry of Elements and Chemistry of Organic Compounds both carry 18 marks each in content weightage making them joint highest priority modules. Together they account for 36 marks out of 80 theory marks. Organic Chemistry is especially significant because all seven of its lessons are public examination topics with no TMA lessons in that module.
What types of questions appear in NIOS Chemistry 313 exam?
The paper has 16 MCQs worth 16 marks, 12 objective questions with sub-parts worth 24 marks totaling 40 objective marks. Subjective section has 9 Very Short Answer questions of 2 marks, 4 Short Answer questions of 3 marks, and 2 Long Answer questions of 5 marks totaling 40 subjective marks. Grand total is 43 questions for 80 marks.
How are practicals assessed in NIOS Chemistry Class 12?
Practicals carry 20 marks assessed through laboratory work at your study center. Assessment includes experiment performance, practical file review showing documented observations and calculations, and viva examination testing conceptual understanding. Common experiments include salt analysis, titrations, and organic preparation experiments documented with proper aim, procedure, observations, and results.
How does Unnati Education help NIOS Chemistry students prepare?
We provide solved TMA answer sets for all 12 TMA lessons in typed and handwritten formats following NIOS guidelines. We also offer complete ready-to-submit practical files, previous year question papers with solutions, module-wise study notes covering all 32 lessons, important reaction summaries for organic chemistry, and personal doubt-clearing support via phone and WhatsApp throughout preparation.
Is NIOS Chemistry (313) easier than CBSE/ICSE?
No, syllabus is almost identical, but NIOS questions are more direct & predictable. With proper coaching, students often score higher than in regular boards.
Do you provide solved TMA for Chemistry (313)?
Yes, 100%! Ready-to-submit handwritten/typed TMA in Hindi & English — latest 2025 pattern, guaranteed full 20/20 marks.
Are practicals compulsory in Chemistry (313)?
Yes, 20 marks practical is compulsory (file submission + viva). We provide complete ready practical file with experiments, observations, calculations & viva questions — accepted everywhere.
How much time should I study daily to pass Chemistry?
Just 1.5–2 hours daily with focused study (concept → numericals → previous papers). With our structured plan + daily practice sheets, even weak students clear it easily in 3–4 months.
How do you teach answer writing for Chemistry?
We give exact NIOS pattern answers — proper diagrams, balanced equations, keywords highlighted, step-by-step numerical solving, and model answers for 5/8/10 mark questions so you score maximum.
Contact Unnati Educations - Your Academic Lifeline
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