NSEC.org.inCHEMISTRY OLYMPIAD PREP
CHEMISTRY OLYMPIAD PREPARATION

NSEC 2026.
Let's get ready.

Know the syllabus. Work through real papers. Build your understanding with explained answers and a full-length mock test.

Explore past papers Take a free mock
Free to access No sign-up needed
A SPACE TO THINK LIKE A CHEMIST
6CCARBON Curiosity → understanding
22NOV 2026
YOUR NEXT EXAMNational Standard Examination
in Chemistry11:30 am–1:30 pm IST
↗
SyllabusKnow what to study↗Previous papersLearn from the real exam↗Practice & solutionsUnderstand every answer↗Free mock testPut preparation to the test↗
LESS SEARCHING. MORE STUDYING.

What are you working on?

THE ESSENTIAL COLLECTION

Real papers. A clearer picture.

Understand the exam by working through the exam.

All paper resources
PREVIOUS YEAR PAPERSOFFICIAL SOURCE LINKS
2025NSEC 202560 questions · 120 minutesPaper + key + solutions2024NSEC 202460 questions · 120 minutesPaper + answer key2023NSEC 202360 questions · 120 minutesPaper + answer key2022NSEC 202260 questions · 120 minutesPaper + answer key2021IOQC 2020–21 Part I32 questions · 60 minutesPaper + key + solutions

2021 uses the pandemic-era IOQC format. Full worked solutions are linked for 2025 and IOQC 2020–21; the 2022–2024 pages provide papers and answer keys.

BUILD FROM THE CONCEPTS

Three branches. One connected subject.

Start with a lesson. Try a question. Find the missing link.

Full syllabus checklist
9 checklist topics

Organic chemistry

Understand structure and reactivity. Follow the reasoning behind a transformation.

Organic fundamentals ↗

The full checklist includes three cross-syllabus topics: environmental chemistry, everyday applications and experimental reasoning.

TURN PREPARATION INTO PRACTICE

Your two-hour
chemistry check-in.

A free foundation mock with a timer, saved answers and a topic breakdown. Finish your attempt, then learn from every explanation.

60questions
120minutes
216marks
Explore the free mock

Original foundation practice. Official NSEC papers can be more demanding.

FOUNDATION MOCK 01 120 min

A test is only the beginning.

01
Attempt in exam mode

48 single-correct and 12 multiple-correct questions.

02
See where you stand

View your score and a breakdown by topic.

03
Understand what to improve

Read the reasoning behind all 60 answers.

Browse the solutions first
NEW TO NSEC?

First, get your bearings.

The essential details, without the guesswork.

01 Pattern & exam date 02 Eligibility & registration 03 Cutoff & INChO selection 04 Your preparation plan
BEFORE YOU BEGIN

A few good
questions.

Make your next study decision
with a little more clarity.

Build your study plan
Is NSEC the same as INChO?

No. NSEC is the first-stage chemistry examination. Selected eligible students progress to INChO, the next stage organised by HBCSE. Read how selection works.

What is the NSEC syllabus?

The official scope extends through Class 12 chemistry, including earlier foundations and the required mathematics. Use the chapter checklist to plan your coverage.

Is NCERT enough for preparation?

NCERT is a useful foundation. Official NSEC papers show whether you can apply those ideas to unfamiliar, multi-step problems. Work through both, and use your mistakes to choose what to study next.

Are these resources free?

Yes. You can read the lessons, access official paper links and attempt the foundation mock without creating an account. Your checklist and mock progress stay in your browser.

Exam information checked 20 October 2026View IAPT & HBCSE sources