NIOS 313 — Chemistry — Syllabus & Chapters

The complete syllabus for NIOS 313 — Chemistry — every chapter you need to study, and how the exam paper is structured.

What you will study (chapters)

Chapter 1: Atoms, Molecules and Chemical Arithmetic
Chapter 2: Atomic Structure
Chapter 3: Periodic Table and Periodicity in Properties
Chapter 4: Chemical Bonding
Chapter 5: The Gaseous and Liquid State
Chapter 6: The Solid State
Chapter 7: Solutions
Chapter 8: Colloids
Chapter 9: Chemical Thermodynamics
Chapter 10: Spontaneity of Chemical Reactions
Chapter 11: Chemical Equilibrium
Chapter 12: Ionic Equilibrium
Chapter 13: Electrochemistry
Chapter 14: Chemical Kinetics
Chapter 15: Adsorption and Catalysis
Chapter 16: Occurrence and Extraction of Metals
Chapter 17: Hydrogen and S-Block Elements
Chapter 18: General Characteristics of the P-Block Elements
Chapter 19: P-Block Elements and Their Compounds - I
Chapter 20: P-Block Elements and Their Compounds - II
Chapter 21: D-Block and F-Block Elements
Chapter 22: Coordination Compounds
Chapter 23: Nomenclature and General Principles
Chapter 24: Hydrocarbons
Chapter 25: Compounds of Carbon Containing Halogens (Haloalkanes and Haloarenes)
Chapter 26: Alcohols, Phenols and Ethers
Chapter 27: Aldehydes, Ketones and Carboxylic Acids
Chapter 28: Compounds of Carbon Containing Nitrogen
Chapter 29: Biomolecules
Chapter 30: Drugs and Medicines
Chapter 31: Soap, Detergents and Polymers
Chapter 32: Environmental Chemistry

Exam paper pattern

Section	What to expect
Q1-Q16	Answer all questions by selecting the most appropriate option from the four choices given.
Q17-Q28	Answer all objective questions as instructed. This group includes fill in the blanks, true or false, passage-based questions, match the following, and completion or balancing based items, usually with small subparts.
Q29-Q37	Answer all questions in about 30 to 50 words each. Attempt only one alternative where an internal choice is given.
Q38-Q41	Answer all questions in about 50 to 80 words each. Attempt only one alternative where an internal choice is given.
Q42-Q43	Answer both questions in about 80 to 120 words each. Each question has subparts, and where an internal choice is given, attempt only one option.

Frequently asked questions

How many chapters are there in NIOS 313 — Chemistry?

The NIOS 313 — Chemistry syllabus has 32 chapters, listed in full above. Cover the high-weightage chapters first using the exam pattern as a guide.

How do I know which NIOS 313 — Chemistry chapters carry the most marks?

Compare the chapter list above with the exam pattern and the last few years of question papers — the topics that appear most often and the units with the highest marks are where to focus first. Always confirm weightage against the official syllabus for your exam year.

Has the NIOS 313 — Chemistry syllabus changed this year?

Boards occasionally revise the syllabus or remove topics for a session. Always download the official syllabus for your exact exam year from the official NIOS portal rather than relying on an older copy or a social-media list.

How can I prepare for NIOS 313 — Chemistry faster?

Begin with the most-frequently-asked topics and the last few years of question papers, then test yourself under timed conditions. If you want guided help, you can use the free AI study tutor for NIOS 313 — Chemistry — practise past-paper questions and get instant feedback — or a focused NIOS 313 — Chemistry study guide that condenses the syllabus into the topics that matter most — both are free to start.