📘 ChapterAce

✨ The only app that explains your wrong answers using your own textbook

Turn any CBSE chapter into a full question paper — in 3 minutes.

38 exam-ready questions in all 9 CBSE formats. Answers validated against your NCERT textbook. AI explains every wrong answer in context.

⬇️ Try free — Class 10 Ch.1 See sample questions

35 questions · Full answer key · No signup needed

Choose your class

Download a free sample paper for your class and see the quality before you buy. More classes are added based on demand — tap "Request" and we'll build yours next.

Class 6

Science

🔔 Request

Class 7

Science

🔔 Request

Class 8

Science

🔔 Request

Class 9

Science · sample ready

⬇️ Free Sample

Class 10

Science · full packs

⬇️ Free + ₹49 Packs

Class 11-12

PCM / PCB

🔔 Request

How it works

1️⃣

Pick or scan your chapterSelect from the NCERT library (auto-fetched, no upload) or scan any textbook page with your phone camera — CBSE, Samacheer Kalvi, S. Chand, any book.

2️⃣

Get a board-pattern paper38 questions covering all 9 CBSE types — MCQ, Match-the-Following, Assertion-Reasoning, Case-Based and more. Same distribution as the real board paper.

3️⃣

Practice — and understand why you were wrongAttempt questions on-screen. When you get something wrong, tap "Explain why" and get a chapter-grounded explanation of exactly where your thinking went wrong.

4️⃣

Download the PDFCBSE-layout A4 paper with answer key and marking scheme — ready to print or share on WhatsApp.

Scan any textbook in seconds

Don't have NCERT? No problem. Point your phone at any textbook page — ChapterAce reads it and builds your question paper.

📘 ChapterAce

Choose source

📚 NCERT Library
Auto-fetch, no scan

📷 Scan textbook
Any book, any board

📄 Upload PDF
Already have a PDF

Choose your source NCERT auto-fetch, scan, or PDF upload

→

📷 Scan pages · 3 / 12

📸

Scan chapter pages Auto-crop · glare removal · any angle

→

⚙️ Generating…

✓ Reading chapter text

✓ Extracting key concepts

⏳ Generating questions…

○ Validating answers

~2 min remaining

AI generates your paper Concepts → questions → validation

→

✅ 38 questions ready

MCQWhich type of reaction…

A-RAssertion: The layer of…

CaseRohit's mother kept…

MTFMatch Column A with…

Practice

PDF ↓

Practice or download PDF All 9 types · answer key · AI explanations

🧠 Every wrong answer becomes a lesson

When you pick the wrong option, ChapterAce tells you exactly why your choice was wrong and why the correct answer is right — explained using your actual NCERT chapter content, not generic internet examples. No other app does this.

Made for everyone preparing for boards

🎓 Students

Pick your chapter. Get your paper. No teacher needed, no waiting. Practice the way the board tests — all 9 question types, with AI explanations when you get something wrong.

👨‍👩‍👧 Parents

₹99/month. Your child gets a board-pattern paper for every chapter, with AI explanations when they're stuck. No tuition fees. No guide books. Cancel anytime.

🧑‍🏫 Teachers

Create a chapter test in 3 minutes. Share it to your class via WhatsApp link. Every paper follows the CBSE blueprint — marking scheme included, no manual paper-setting.

Why ChapterAce is different

Other tools give stored questions from a bank

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ChapterAce generates fresh from your chapter text — never repeats

Built for teachers to set tests

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Built for students to self-practice, any time

MCQ and short answer only

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All 9 CBSE types including MTF, AR, Case-Based

No explanation when you get it wrong

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"Explain my wrong answer" on every question

NCERT only — useless for state board students

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Scan any textbook — NCERT, Samacheer Kalvi, S. Chand, Oswaal

Web-only, manual content selection

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Mobile app, auto-fetches NCERT or scan with camera

Sample questions from the pack

MCQ · 1 mark

Which of the following correctly represents the balanced chemical equation for the burning of magnesium in air?

Answer + explanation included ✓

Assertion-Reasoning · 1 mark

Assertion (A): A magnesium ribbon is cleaned with sandpaper before burning in air. Reason (R): The layer of magnesium oxide on the surface prevents it from catching fire easily.

Answer + explanation included ✓

Case-Based · 4 marks

Rohit's mother kept leftover food in an open container. After two days the fat became rancid, and the iron tawa developed a reddish-brown coating…

3 sub-questions with marking scheme ✓

Match the Following · 4 marks

Match the type of chemical reaction in Column A with the correct example in Column B.

Structured pairs with column-by-column answer key ✓

What every paper includes

📖

Grounded in your NCERT chapterEvery question generated from the exact textbook chapter and validated against it — no off-syllabus content.

📝

All 9 board question typesMCQ, Fill-in-the-blanks, True/False, Match-the-Following, Assertion-Reasoning, VSA, Short Answer, Long Answer, Case-Based.

🎯

Marking scheme + Bloom's levelKnow exactly how marks are awarded and which thinking skill each question tests.

🧠

AI explains wrong answersTap "Explain why" on any wrong answer — get a chapter-grounded explanation in plain language.

📷

Works with any textbookNot just NCERT — scan any chapter from Samacheer Kalvi, S. Chand, Lakhmir Singh, Oswaal, or your coaching notes. Point your camera, scan the pages, get your paper.

🖨️

Print-ready A4 PDFCBSE-layout paper with answer key — practice on paper exactly like the real exam.

CHAPTERS 2 & 3 PACK

₹49 one-time

Acids, Bases and Salts — 36 questions
Metals and Non-metals — 38 questions
Full answer keys + marking schemes
Instant download after payment

⚡ Pay ₹49 — Instant Download

UPI · Cards · Net Banking — secured by Razorpay

💡 Try the free Chapter 1 sample first. Only buy if you love the quality.

Common questions

Can't I just use ChatGPT for this?

ChatGPT doesn't know CBSE question formats. It won't make a proper Assertion-Reasoning or Match-the-Following question, and it doesn't validate answers against your specific textbook chapter. ChapterAce is built for CBSE — every question has the right format, the right marks, and the right Bloom's level.

My school already uses QB365 / Examin8.

Those tools are for your teachers to set tests. ChapterAce is for you to practice — any chapter, any time, without waiting for anyone to assign you something. You own it.

Is this just a question bank? Will questions repeat?

No. A question bank recycles stored questions. ChapterAce generates fresh questions every time from your actual chapter text — they can never run out or repeat.

How is this different from Doubtnut or Physics Wallah?

Those apps answer doubts you already have. ChapterAce finds the doubts you don't know you have yet — by testing you before the exam does.

What's available now — and what's coming

✅

Available todayChapter 1 free download · Chapters 2 & 3 pack (₹49) — Class 10 Science, printable A4 PDFs with full answer keys.

🚀

Coming — the ChapterAce app (₹99/month)All chapters for Class 9-10 Science & Maths · Scan any textbook with your phone camera — NCERT, Samacheer Kalvi, S. Chand, any book · AI "explain my wrong answer" on every question · Progress tracking that shows your weak chapters before the exam does.

🔔 Join the waitlist — get the app first

Your data stays private

ChapterAce runs on our own server in India — we don't sell your data, ever.

🇮🇳

Built and run in India Our own application server runs in India. Questions are generated by Claude AI; your name and email are never sent with them.

🔒

Minimal data, no profiling Email, board, class and your generation history — that's it. No location, no contacts, no ad identifiers. You are not the product.

👶

DPDP compliant India's Digital Personal Data Protection Act. Parental consent for users under 18. Data is never sold or shared for advertising.

🚫

No ads, ever We charge ₹99/month so we never need to monetise your data. No tracking, no ad profiles.

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