NCERT First — Why Toppers Finish It Before Reference Books
Every year, students arrive in September with three reference books, a coaching module, a YouTube playlist — and an NCERT chemistry textbook that has been opened maybe four times. By February the same students are asking which book to "leave" so they can finish. The answer is always the same, and it is not popular: leave everything, finish NCERT, then come back.
This is not a claim that NCERT is sufficient for every exam. It is a claim about order. NCERT is the base layer. A reference book is an extension of a base you do not yet have.
Why the base layer has to come first
Three concrete reasons, none of them motivational:
- Your board paper is written against it. The CBSE syllabus is defined in terms of the NCERT chapters. Definitions, the exact wording examiners expect, the standard diagrams and the named reactions all come from there.
- Reference books assume it. A competitive-exam book will introduce a problem type in two lines and spend the rest of the page on variations, because it assumes you already know the derivation. If you don't, you memorise the variations without the idea — which collapses the moment a question is phrased differently.
- It is finishable. This is underrated. NCERT chemistry is a fixed, countable amount of work. A student who has finished something gains confidence that a student perpetually mid-way through four books never gets.
What "finished NCERT" actually means
Most students who say they have finished NCERT have read the chapters. That is roughly a third of the book. A chapter is finished when all six of these are done:
| Part of the chapter | What "done" means |
|---|---|
| Main text | Read line by line, including the small-print paragraphs and units |
| Solved examples inside the text | Re-solved on paper with the book closed |
| In-text (intext) questions | Attempted and written out — these are skipped most often and asked most often |
| End-of-chapter exercises | All of them, including the ones the teacher didn't assign |
| Tables, figures and captions | Understood, not glanced at; captions carry real exam content |
| Chemical equations | Balanced and written from memory, with conditions above the arrow |
Note the second and third rows. In-text questions and the boxed solved examples are the parts most students treat as decoration. They are the parts that most closely resemble what a paper will ask you to do.
The three-pass method for one chapter
One chapter, three passes, spread over about a week alongside school.
Pass 1 — Read (2 sittings, ~45 min each). Read the chapter straight through with a pencil. Do not highlight. Instead, in the margin, write a two-word label for each paragraph ("why bond angle", "exception: N₂"). At the end, write the chapter's five key ideas on one sheet without looking back.
Pass 2 — Work (3 sittings, ~45 min each). Re-solve every in-text solved example on blank paper. Then do the in-text questions, then the exercises. Mark each question green (right first time), amber (right after help), red (wrong or blank).
Pass 3 — Recall (1 sitting, ~30 min, three days later). Book closed. Write the five key ideas, every formula with units, and every reaction with conditions. Then re-do only the red and amber questions. Anything still red goes into your doubt list for the next class.
The gap of a few days before Pass 3 is deliberate. Recalling something you have partly forgotten is what makes it stick; recalling something you read an hour ago does almost nothing. If you can only do one pass properly, do Pass 3 — the recall pass is worth more than the reading pass.
So when does a reference book earn its place?
After the chapter is green, not before. And for specific, named purposes rather than "because everyone has it":
| You need | NCERT gives you | A reference book adds |
|---|---|---|
| Definitions, standard wording, board answers | Everything required | Nothing useful — different wording can cost you marks |
| Numerical variety (mole, thermodynamics, equilibrium) | A limited set | Genuine value — many more problem shapes |
| Organic mechanisms in depth | The mechanisms in the syllabus | Genuine value for JEE/NEET-level reasoning questions |
| Inorganic facts and trends | The examinable set, well organised | Mostly extra load; use NCERT plus your own trend tables |
| Previous-year questions | Not its job | Essential — but that is a PYQ book, not a theory book |
Read that table honestly and most students discover they need one numerical practice book and one previous-year question collection. Not four theory books.
What goes wrong
- Highlighting instead of solving. A yellow page feels like progress and produces none. If your NCERT is colourful and your notebook is empty, the ratio is backwards.
- Skipping in-text questions because they are not "in the exercise". They are short, they are conceptual, and they are exactly the kind of one- and two-mark question that decides a grade.
- Reading NCERT after coaching notes. The notes then feel like the real content and NCERT feels like revision. Reverse it: NCERT builds the idea, notes compress it.
- "I've done NCERT" after one reading. Test it — open a random chapter, close it, and write the exercise answers. That is the only honest check.
- Treating NCERT as enough for every exam. For boards it is the backbone. For JEE/NEET-level problem variety you will need additional practice on top — but on top, not instead.
A realistic September-onwards order
If you are in Class 11 or 12 right now and behind, the sequence that recovers fastest is: finish the current chapter's three passes alongside school so you never fall further behind; then, in a separate slot, run the same three passes on your backlog chapters, oldest first. Two tracks, both moving. Trying to "first clear the backlog, then start current" is how students end up permanently behind on both.
Use the calculator to check, not to skip the working. Once you have solved an NCERT numerical on paper, verify it — molar mass, molarity, pH, equilibrium and thermodynamics tools are all in one place.
Open the ABC Chemistry Calculator Suite →If you want the three-pass method enforced with weekly written tests, ABC Chemistry runs Class 11–12 chemistry coaching from its Gurugram centre and online across India — details at abcchemistry.in.