Where our answers come from
Every answer on this site is taken from the marking scheme CBSE published for that exact paper — the same document its examiners marked from. We do not write our own answers, and we do not guess. This page explains how that works, and is honest about where it stops.
The questions
Every question comes from a real CBSE board paper — the question papers the board publishes after each exam. Nothing here is written by us, by a tutor, or by a model. Each question page states the paper it came from: the year, the region, the set and the question number as printed.
The answers
After each exam CBSE publishes the marking scheme — the official answer document. We extract each answer from the scheme belonging to that exact paper code, and store it against that question.
Most answers are read directly from the scheme’s own text. Where a scheme was published as a scan rather than text, we recover the answer from the page image and check it against the question it claims to answer. A small number of answers were repaired by hand after that check failed. Each question page shows the board’s answer, the worked solution where the scheme gives one, or both.
What we take out, and why
A marking scheme is written for examiners, not students. Alongside the answer it carries the value-point boxes, the per-step marks, and notes like “award 1 mark if…”. We strip those out and keep the answer: the working, the derivations, the units, and both branches of every internal choice. What you read is the board’s answer without the examiner’s bookkeeping.
“Asked in 2023 & 2025” means what it says
CBSE prints three shuffled sets of each paper, so the same question often appears more than once in a single exam. That is not a repeat, and we do not count it as one. When a question page says it was asked in more than one year, it means different exam years — and the page lists each appearance so you can check.
Chapter weightage: what we counted, not what CBSE promised
On the year pages we show marks per chapter. Those are marks we counted in the papers themselves. CBSE allocates marks to units, and a unit can hold several chapters — so an official per-chapter figure does not exist, and we never present ours as one. For CBSE’s own allocation, read the syllabus on cbseacademic.nic.in.
When we don’t have the answer, we say so
315 questions in our library have no published answer yet — usually because the scheme for that paper is not machine-readable, or the answer is a drawing we have not reproduced. Those questions are marked as being verified rather than filled with a guess, and they are kept out of search results until a real answer lands.
One exam that is not like the others
The 2022 papers were the Term-II exam: 40 marks and a different paper shape from every other year here. We keep them because they are real board questions, but treat them as their own thing rather than as a normal year.
Found a mistake?
Tell us and we will check it against the board’s scheme: hello@solveit.page. Corrections are made against the source document, never by rewriting the answer to suit an argument.