NIOS 212 — Science and Technology
This is a complete, free study companion for NIOS 212 — Science and Technology — built around what the exam actually asks. The topics examiners repeat most are Physical and Chemical Properties of Metals and Non-Metals, Combination of Resistors, and Lenses and Lens Formula. The syllabus runs to 32 chapters. Below you'll find the full topic-frequency ranking, the exam paper pattern, every chapter, a step-by-step study plan, and the official downloads — everything in one place.
Everything here is free. We're an independent student resource, not the official NIOS body, so always confirm the current syllabus and exam dates on the official NIOS website before you rely on them.
Key information
- Subject code
- 212
- Level
- Class 10
- Programme
- CL10
- Exam
- On-Demand Examination System
- Conducted by
- National Institute of Open Schooling (NIOS)
Most important topics (by past-paper frequency)
| # | Topic | Times asked | Likelihood |
|---|---|---|---|
| 1 | Physical and Chemical Properties of Metals and Non-Metals | 48 | 7.5% |
| 2 | Combination of Resistors | 42 | 6.5% |
| 3 | Lenses and Lens Formula | 41 | 6.4% |
| 4 | Modern Periodic Law and Long Form Periodic Table | 40 | 6.2% |
| 5 | Covalent Bonding and Properties of Covalent Substances | 38 | 5.9% |
| 6 | Allotropes of Carbon | 35 | 5.4% |
| 7 | Blood Groups, Sex Determination, and Hereditary Disorders | 32 | 5% |
| 8 | Bohr Model, Neutron, Atomic Number, and Mass Number | 31 | 4.8% |
| 9 | Functional Derivatives and Compounds of Daily Use | 31 | 4.8% |
| 10 | Modern Measurement Systems and SI Units | 30 | 4.7% |
| 11 | Energy, Work, and Forms of Energy | 30 | 4.7% |
| 12 | Dispersion of Light and Defects of Vision | 30 | 4.7% |
Based on how often each topic appeared in official previous-year question papers.
Exam paper pattern
| Section | What to expect |
|---|---|
| Q1-Q17 | Answer all 17 multiple choice questions. Each question has four options and carries 1 mark. |
| Q18-Q27 | Answer all 10 objective questions as directed. Each question carries 2 marks with two 1-mark parts, and these may include matching, fill in the blanks, true or false, or short passage-based items. |
| Q28 | Answer the passage-based objective question. It has five 1-mark parts to be answered from the given information. |
| Q29-Q34 | Answer all six very short questions in about 30 to 50 words each. Some questions may offer an internal choice. |
| Q35-Q41 | Answer all seven short-answer questions in about 50 to 80 words each. Some questions may offer an internal choice. |
| Q42-Q43 | Answer both long-answer questions in about 80 to 120 words each. These questions may be split into parts and may include an internal choice. |
What you will study (chapters)
- Chapter 1
- Measurement in Science and Technology
- Chapter 2
- Atoms and Molecules
- Chapter 3
- Chemical Reaction and Equations
- Chapter 4
- Matter in Our Surroundings
- Chapter 5
- Periodic Classification of Elements
- Chapter 6
- Atomic Structure
- Chapter 7
- Chemical Bonding
- Chapter 8
- Acids, Bases and Salts
- Chapter 9
- Force and Motion
- Chapter 10
- Motion and Its Description
- Chapter 11
- Gravitation
- Chapter 12
- Sound and Communication
- Chapter 13
- Sources of Energy
- Chapter 14
- Work and Energy
- Chapter 15
- Thermal Energy
- Chapter 16
- Light Energy
- Chapter 17
- Electrical Energy
- Chapter 18
- Magnetic Effect of Electric Current
- Chapter 19
- Heredity
- Chapter 20
- Classification of Living Organisms
- Chapter 21
- History of Life on Earth
- Chapter 22
- Building Blocks of Life - Cell and Tissues
- Chapter 23
- Control and Coordination
- Chapter 24
- Reproduction
- Chapter 25
- Life Processes-1: Nutrition, Transportation, Respiration and Excretion
- Chapter 26
- Air and Water
- Chapter 27
- Metals and Non-Metals
- Chapter 28
- Carbon and Its Compounds
- Chapter 29
- Natural Environment
- Chapter 30
- Human Impact on Environment
- Chapter 31
- Food Production and Animal-Husbandry
- Chapter 32
- Health and Hygiene
Official textbook
- NIOS 212 — Science and Technology — official textbook / study material — Free download from the official source.
How to study NIOS 212 — Science and Technology and score well
- Start with the highest-frequency topics — In NIOS 212 — Science and Technology, Physical and Chemical Properties of Metals and Non-Metals, Combination of Resistors, Lenses and Lens Formula, and Modern Periodic Law and Long Form Periodic Table appear again and again in past papers. Master these first — they return the most marks for the time you put in.
- Learn how the paper is set — The NIOS 212 — Science and Technology paper is split into sections (see the exam pattern above). Knowing the marks each section carries tells you how long to spend on each — then practise to that timing.
- Practise with previous-year papers — Solve the last 5–10 years of NIOS NIOS 212 — Science and Technology papers under timed, exam-like conditions. Past papers show exactly which topics repeat and how questions are worded.
- Revise actively, not passively — Write a one-page summary for each of the 32 chapters — key definitions, formulas and the points examiners reward — then re-test yourself instead of re-reading.
- Mark your answers with the official scheme — After each practice paper, score yourself against the official marking scheme. It shows how marks are awarded step-by-step, so you learn to present answers the way examiners expect.
Exam tips: how to score higher in NIOS 212 — Science and Technology
Where students lose marks: rushing the high-weightage questions, skipping the steps the marking scheme rewards, and saving easy sections for last. Read the whole paper first, attempt your strongest section early to bank marks, and always show your working.
Manage your time: split your time in proportion to the marks each section carries, keep a few minutes at the end to check, and never leave a question blank — a partial, structured answer still earns partial marks.
Frequently asked questions
What are the most important topics in NIOS 212 — Science and Technology?
Based on past papers, the most frequently asked topics include Physical and Chemical Properties of Metals and Non-Metals, Combination of Resistors, Lenses and Lens Formula. The full ranked list with how often each appears is in the "Most important topics" section above.
Where can I download NIOS 212 — Science and Technology previous-year question papers?
Official NIOS previous-year question papers are available on the official NIOS website. Open the Question Papers section for the direct link, plus the exam pattern and the topics that repeat most.
How can I prepare for NIOS 212 — Science and Technology faster?
Start with the highest-frequency topics, learn the exam pattern so you know how each section is marked, and practise with past papers. A subject-aware study tutor can quiz you on exactly these topics.
A Gyani AI tutor trained on the NIOS 212 — Science and Technology syllabus and past papers can quiz you on the most-asked topics and show you exactly what to revise.