Every topper's preparation, without much exception, traces back to a properly solved NCERT textbook — not a reference book, not a coaching module, the actual textbook. These are detailed, step-by-step NCERT solutions for Class 11 and Class 12 Chemistry, built by S.K. Sir to do two things at once: get you a genuine 95%+ in boards, and lay down the exact foundation NEET and JEE actually test. Pick a class below and start with whichever chapter you're currently stuck on — there's no need to work through them in order, and no login required to get started.
There's a common misconception that NCERT only matters for board exams, and it's worth correcting directly: the NTA, which sets both NEET and JEE Main, uses the NCERT textbook as the literal baseline for writing questions. Working through the NCERT Class 11 Chemistry solutions and NCERT Class 12 Chemistry solutions isn't optional extra practice — it's the actual prerequisite for doing well in either exam, boards or competitive. Skip it in favour of a thicker reference book, and you're often practising problems the actual exam was never going to ask in the first place, no matter how impressive those problems look on paper.
Plenty of reference books on the market are full of complicated problems that look impressive on the page and almost never show up in a real exam. The in-text questions and back-of-chapter exercises in NCERT, by contrast, are built specifically to test conceptual depth, which is exactly what both boards and NEET/JEE actually reward. Under S.K. Sir's curation, these solutions don't just hand you a final answer — they walk through the exact method CBSE examiners expect to see for full marks, and flag where a shorter, equally valid method exists for students who already understand the concept.
Balancing board preparation against competitive coaching is a genuine problem for most students, and it's usually solved badly — either boards get neglected in favour of NEET practice, or NEET prep quietly stalls while a student over-invests in board-style long answers. These solutions are built to close that gap directly. Solve a numerical from Electrochemistry, for instance, and you'll get the full, descriptive method CBSE expects first, followed immediately by S.K. Sir's "Competitive Exam Hack" — a shortcut that reaches the identical answer in a fraction of the time for NEET or JEE. Nobody needs to prepare twice for two different versions of the same chapter, and nobody needs to guess which method to actually practise for which exam. Over two years of Chemistry, that saved effort adds up to a genuinely significant amount of extra study time redirected somewhere more useful.
Most students solve the back-of-chapter exercises and stop there, skipping the solved examples and in-text questions scattered through the rest of the chapter. That's a mistake — NEET has pulled questions directly from NCERT in-text sections more than once, and the NCERT Exemplar contains genuinely challenging, multi-concept problems that show up again in JEE Advanced. These solution bundles cover all three: back exercises, in-text questions, and a selection of Exemplar problems, so nothing gets quietly skipped just because it wasn't in the more obvious section of the chapter. A surprising number of NEET Chemistry questions each year trace back to a line most students never actually read closely, buried in a solved example rather than sitting in the exercises where students naturally focus their attention first.
Solutions circulating online for NCERT Chemistry are, unfortunately, inconsistent in quality — plenty of them get the final answer right while skipping steps a board examiner would actually want to see marked, or worse, get an intermediate step subtly wrong in a way that only becomes obvious when the final answer doesn't match. Every solution here is checked against the current CBSE marking scheme directly, not adapted from an older edition or a different board's approach, and gets revised whenever NCERT itself issues a correction or update to a chapter. We'd rather take a solution down temporarily to fix an error than leave a wrong step live and have a student learn it as correct.
Building and maintaining an accurate solution set for two full years of NCERT Chemistry is genuinely a lot of ongoing work, so it's a fair question why none of it sits behind a paywall. The honest answer is that a student who's already relied on these solutions through Class 11 and 12 is far more likely to trust S.K. Sir's actual teaching when the time comes to think about NEET or JEE coaching, and that trust is worth more to us than charging for a PDF ever would be. There's no trial period, no watermark pushing an upgrade, and no artificial limit on how many chapters you can access without paying anything at all. Plenty of students use this archive for two full years without ever enrolling in a paid course, and that's genuinely fine with us — the goal was always to make sure NCERT Chemistry was properly solved somewhere online, not to force a sale out of every download.
Class 12 makes up the larger share of the competitive syllabus and carries the most weight on your board transcript, so getting it right here matters twice over. Click into any chapter below for the step-by-step PDF solution, organised by which NCERT book it actually appears in — Book 1 covering Physical and Inorganic Chemistry, Book 2 covering Organic.
All ten chapters across both books are covered here — nothing partial, nothing "coming soon." Each solution set gets reviewed against the current NCERT edition, so a syllabus update on NCERT's end triggers a review on ours rather than leaving an outdated PDF live for students to unknowingly revise from.
Class 11 lays down the logic the entire subject depends on, and a shaky foundation here tends to show up as a much bigger problem by the time Class 12 numericals get harder. Use these solutions to fortify exactly that base before it becomes an issue later — most students who struggle badly in Class 12 Chemistry trace it back to a Class 11 gap nobody caught in time.
These cover the full current NCERT Class 11 Chemistry syllabus across both physical and inorganic/organic sections. If a chapter number looks like it's missing from a list, it's most likely grouped differently than expected — Redox Reactions, for instance, sits with the physical chemistry set above rather than with inorganic topics, since that's closer to how it's actually taught in most classrooms, including S.K. Sir's own.
Reading a solved answer and actually solving the problem yourself are different exercises, and it's worth being honest that only one of them builds real skill. The most effective way to use these PDFs is to attempt every question cold first, without peeking, and only open the solution afterward, specifically to check where your own method diverged from the expected one, rather than skimming the solution and assuming you'd have gotten there yourself.
When your answer matches but your method doesn't, pay attention to that gap particularly closely. CBSE board exams award marks step by step, not just for a correct final answer, so a numerically right answer reached through the wrong steps can still lose marks in boards, even though it might not cost anything in NEET's pure multiple-choice format. Getting used to the expected method early avoids that gap becoming a problem once Class 12 board season actually arrives, when there's far less time to fix a habit than there is right now.
For NEET and JEE preparation specifically, pay close attention to the shortcut method noted alongside the full solution. The full method is what boards expect to see written out; the shortcut is what actually gets you through a 60-second NEET question or a tightly timed JEE numerical. Learning to switch between the two, depending on which exam you're actually sitting, is a skill in itself, and one worth practising deliberately rather than assuming it'll happen automatically on exam day, under time pressure, without having rehearsed it before.
One last thing worth flagging: don't treat board method and competitive shortcut as interchangeable right up until the week before boards. Plenty of students who've leaned almost entirely on shortcuts through the year find themselves relearning the descriptive method from scratch a month before their board exam, under considerably more pressure than they'd have felt practising it gradually alongside the shortcut all along.
A few questions come up often enough that they're worth covering directly here.
Yes. NCERT has revised and streamlined both the Class 11 and Class 12 Chemistry textbooks in recent years, and these solutions are built against the current edition, not an older one still circulating on other sites. Where a chapter has been shortened or restructured, the solutions here reflect that directly.
A selection of the more relevant Exemplar problems are included alongside the main textbook solutions, focused on the ones that actually tend to show up in some form in NEET or JEE Advanced, rather than the complete Exemplar book chapter by chapter, which would be far more than most students actually need to work through.
Both, genuinely. Each solution includes the full descriptive method CBSE examiners expect for board marks, plus a separate competitive-exam shortcut, so the same PDF serves both purposes without needing two separate resources for two different exams that are, underneath the surface, testing much of the same material.
Both options exist. Individual chapters can be downloaded directly from the lists above, or the combined Master PDF further down this page bundles both classes into a single searchable file for anyone who'd rather have everything organised in one place from the start.
Yes, entirely. There's no login wall on the individual chapter downloads, and the combined Master PDF only asks for an email address so the file can actually be sent to you — no payment information is ever requested for any of this.
Not currently. This resource is Chemistry-specific, in line with what S.K. Sir actually teaches. For Physics and Biology, we'd genuinely recommend checking with subject-specific teachers or resources built around those subjects instead, rather than relying on solutions written by someone outside their area of expertise.
Tell us, genuinely. Every correction we've made to this archive has come from a student or teacher pointing something out first, and we'd much rather fix an error quickly than have it sit uncorrected because nobody flagged it. The contact form on this site reaches our team directly for exactly this kind of report.
After, ideally. Attempting NCERT questions once you already understand the underlying concept turns the exercise into genuine practice rather than a confusing first encounter with unfamiliar material. If a live class isn't an option for a particular chapter, reading the NCERT theory section carefully first serves a similar purpose.
Whichever chapter you need right now, it's already above — Class 12 solutions sit in the first download section, Class 11 in the second, both organised by the actual NCERT book they appear in rather than an arbitrary order. If you'd rather not download chapters one at a time over the coming weeks, the combined Master PDF below puts both years in a single searchable file instead.
Get both Class 11 and Class 12 solutions in a single, searchable PDF document, organised by chapter for quick reference during revision. Includes exclusive access to S.K. Sir's "Board vs NEET" strategy guide, covering exactly how to switch between descriptive and shortcut methods depending on which exam you're actually preparing for that week — no payment details needed, and no obligation to enrol in anything afterward.