NIOS 12th Chemistry sample papers are the best way to get used to how the Chemistry (313) theory paper is set, from objective items to the reaction and numerical questions that carry the most marks. On this page you get free NIOS Class 12 Chemistry sample papers built to the latest 313 pattern, each with fully worked solutions so you practise across Physical, Inorganic and Organic Chemistry the way the real board paper tests you.

Official website: nios.ac.in

NIOS 12th Chemistry Sample Papers 2026

NIOS 12th Chemistry Sample Paper 1

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NIOS 12th Chemistry Sample Paper 2

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NIOS 12th Chemistry Sample Paper 3

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NIOS 12th Chemistry Sample Paper 4

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NIOS 12th Chemistry Sample Paper 5

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NIOS 12th Chemistry Sample Paper 6

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NIOS 12th Chemistry Sample Paper 7

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NIOS 12th Chemistry Sample Paper 8

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NIOS 12th Chemistry Sample Paper 9

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Download any of the sample papers above and solve it in one timed sitting of about 3 hours to match the real NIOS Chemistry exam. Each paper follows the 313 theory pattern of 80 marks with a mix of objective, short answer and long answer questions, and every question comes with a full solution so you can review your reactions and working afterwards.

You can download these papers here on Collegedunia, and you should also check the official website nios.ac.in for the latest date sheet, syllabus and sample question papers before you plan your practice.

  • Exam cycle: NIOS Class 12 Chemistry theory exams are held twice a year, in April-May and October-November; the April 2026 exams ran from April 10 to May 6, 2026.
  • Paper format: The Chemistry (313) paper carries 80 theory marks plus a 20-mark practical, totalling 100 marks, with a mix of objective, short answer and long answer questions.
  • Marking: No negative marking; you need at least 33% overall to pass, covering both the theory paper and the practical.
  • Mode and duration: Pen and paper theory exam of 3 hours, held from 2:30 PM to 5:30 PM, with a separate 3-hour practical of 20 marks.
  • High weightage: Chemistry of Elements and Chemistry of Organic Compounds carry 18 marks each, followed by Chemical Dynamics at 12 and Atomic Structure at 10.
  • Syllabus base: The NIOS Senior Secondary Chemistry 313 course of 8 modules across Physical, Inorganic and Organic Chemistry, available free on the official website.

NIOS 12th Chemistry Sample PaperNIOS 12th Chemistry Exam Pattern and Marks Distribution 2026

Knowing how the Chemistry 313 paper is built helps you plan your three hours across the different question types. Since there is no negative marking, you should attempt every question and show your full working so you pick up step marks in numericals and reaction questions.

  • Total marks: 100, made up of 80 theory marks in the written exam plus a 20-mark practical examination.
  • Question types: A mix of objective and multiple choice questions, short answer questions and long answer questions across the 313 modules.
  • Marking: No negative marking; a minimum of 33% overall is needed to pass, covering theory and practical.
  • Duration: 3 hours for the theory paper, held from 2:30 PM to 5:30 PM, with a separate 3-hour practical.
  • Weightage: Chemistry of Elements and Chemistry of Organic Compounds carry 18 marks each, then Chemical Dynamics at 12 and Atomic Structure at 10.

Key advice: Clear the objective and short answer questions first to bank quick marks, then give the bulk of your time to the Organic Chemistry and Chemistry of Elements long answers where most of the paper's marks sit.

NIOS 12th Chemistry Sample Papers - Why Recent Papers Matter Most

NIOS revises the Chemistry 313 course and question style from time to time, so recent sample papers reflect the exact format you will face this cycle. Practising with fresh papers keeps your preparation aligned with the current pattern rather than an outdated one.

  • Recent papers follow the latest split of objective, short answer and long answer questions, so your practice matches what the real 313 paper looks like now.
  • High-weightage reactions in Organic Chemistry and named reactions of the elements repeat in similar forms, so solving the last few years shows you which questions keep coming back.
  • Current papers help you judge the real length and difficulty, so you can pace yourself across the full 3-hour sitting without running out of time.

NIOS 12th Chemistry Chapter Wise Weightage - High Scoring Topics to Focus in Sample Papers

This breakdown shows how the 80 theory marks are spread across the Chemistry 313 modules so you know where to focus first. Use it to plan your revision and to set a quick pace while solving the sample papers.

Chapter Marks Difficulty What to Watch For
Chemistry of Organic Compounds (hydrocarbons, functional groups, biomolecules, polymers) 18 High The reaction-heavy core; learn conversions, name reactions and mechanisms, and write balanced equations for full marks.
Chemistry of Elements (periodic properties, s, p, d and f block, metallurgy) 18 Moderate to High Trends, preparation and properties of elements; keep equations balanced and remember exceptions in the periodic trends.
Chemical Dynamics (thermodynamics, equilibrium, kinetics, electrochemistry) 12 Moderate to High Formula-driven numericals; state the formula, substitute carefully and check units before writing the final answer.
States of Matter and Solutions (gaseous and liquid state, colligative properties) 12 Moderate Colligative property numericals are reliable marks; watch molar mass and concentration units closely.
Atomic Structure and Chemical Bonding 10 Moderate Quantum numbers, shapes and bonding theories; short conceptual questions that reward clear fundamentals.
Chemistry in Everyday Life and Environmental Chemistry 10 Easy to Moderate Application-based and theory questions; some of the easiest marks if you revise the standard examples and uses.

Note: Do not skip the Chemistry in Everyday Life and Environmental Chemistry sections, since they are among the easiest marks in the paper and often ask direct, factual questions that take only seconds.

NIOS 12th Chemistry Sample Paper Video Solutions 2026 - Watch Before You Start Solving

Watching a solver work through a full NIOS Class 12 Chemistry paper shows you how the 313 questions are framed and how much detail a reaction or numerical answer needs to score full marks. The goal is to pick up the right method and presentation, not just the final answers, so you can carry the same approach into your own papers.

The video below works through a solved NIOS Class 12 Chemistry 313 question paper, running through the objective, short answer and long answer questions across Organic Chemistry, Chemistry of Elements and Chemical Dynamics, which makes it a useful revision before you attempt any of the sample papers on this page.

Watch:

Source: NIOS Class 12 Chemistry 313 fully solved question paper walkthrough, covering the objective, short answer and long answer questions across Organic Chemistry, Chemistry of Elements and Chemical Dynamics (YouTube)

How to Use NIOS 12th Chemistry Sample Papers to Clear in First Attempt

A sample paper only helps if you treat it like the real exam and review it harder than you solve it. Build a fixed routine around each paper so every attempt sharpens your recall of reactions and your accuracy in numericals.

  • Solve each paper in one strict 3-hour block so you get used to the real length and learn to manage your time across all the modules.
  • Attempt the objective and short answer questions first, then give the remaining time to the long Organic and Chemistry of Elements questions.
  • Write balanced equations and every step of your numerical working, since NIOS awards step marks even when the final answer is wrong.
  • Compare your answers with the given solutions and note exactly where you lost marks, whether it was an unbalanced equation, a wrong formula or a missing step.
  • Keep a chapter-wise error list and a sheet of the reactions you keep forgetting, and revise them first.
  • Re-solve your weakest paper closer to the exam to confirm your accuracy has actually improved.

NIOS 12th Chemistry Answer Writing and Step Marking Strategy

NIOS Chemistry awards marks step by step, so how you present a reaction or numerical matters as much as the final answer. Since there is no negative marking, you should attempt every question and lay out your working clearly so the examiner can follow each step.

  • Write balanced chemical equations with correct conditions, since marks are given for the equation even when the rest of the answer is short.
  • Show every step in numericals, state the formula first, and carry the correct units through to the final answer.
  • Draw clear structures and mechanisms in Organic Chemistry, as a correct structure often secures part of the marks on its own.
  • Attempt every question because a partial, correct-method attempt still picks up step marks with no penalty for a wrong answer.

NIOS 12th Chemistry 4 Week Preparation Plan Using Sample Papers

  • Week 1: Revise Organic Chemistry and Chemistry of Elements since they carry 18 marks each, learn the key reactions, and attempt your first sample paper at the end of the week.
  • Week 2: Cover Chemical Dynamics and States of Matter with their numericals, and solve two of the sample papers under the timed 3-hour block.
  • Week 3: Finish the remaining sample papers, revise Atomic Structure, Bonding and the application-based chapters, and review your errors more than you solve new questions.
  • Week 4: Re-solve your weakest paper, then keep the last two days for light revision of reactions and formulas only.

FAQs on NIOS 12th Chemistry Sample Papers 2026

Ques.How many marks is the NIOS Class 12 Chemistry 313 paper worth?

Ans.The Chemistry 313 course carries 100 marks in total, made up of 80 marks in the written theory exam and a 20-mark practical examination.

Ques.Is there negative marking in the NIOS 12th Chemistry exam?

Ans.No, there is no negative marking in NIOS Class 12 Chemistry, so you should attempt every question. You need 33% overall to pass, covering both theory and practical.

Ques.Are these NIOS 12th Chemistry sample papers free with solutions?

Ans.Yes, all the Chemistry sample papers on this page are free to download as PDFs and come with full solutions so you can check your reactions and numerical working on every question.

Ques.Which module carries the most marks in NIOS Class 12 Chemistry?

Ans.Chemistry of Elements and Chemistry of Organic Compounds carry the highest weightage at 18 marks each out of 80 theory marks, followed by Chemical Dynamics at 12 and Atomic Structure at 10.

Ques.How much time do I get for the NIOS 12th Chemistry exam?

Ans.The NIOS Class 12 Chemistry theory paper runs for 3 hours, held from 2:30 PM to 5:30 PM, with a separate 3-hour practical, so practise each sample paper in a single timed 3-hour block.

Ques.How many Chemistry sample papers should I solve before the NIOS exam?

Ans.Solve all the papers here at least twice, focus on the Organic Chemistry and Chemistry of Elements questions, and review every reaction or numerical you get wrong so the method stays with you.