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📐JEEMain · Class 11–12 📚SamacheerClass 6–12 📗NCERTCBSE 6–12 🧬NEETBio 32 · Phy 28 · Chem 19 · Maths 27
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📄 Past Papers 2020–2026
📚 Classes 6–12 · All Subjects
NEET 2027 — Biology is finished

NEET Biology — all 32 chapters, 960 questions, free

Every NCERT Biology chapter from Class 11 and 12, written by hand against the chapter and read by a human before it went live. Free chapter tests, no login, with your all-India rank after every one.

🧬 All 32 NEET Biology chapters → · ⚛️ All 28 NEET Physics chapters → · 🧪 All 19 NEET Chemistry chapters → · 📐 All 27 NEET Maths chapters →

Also free: NEET NCERT solutions (79 chapters) · JEE Main prep · chapter tests with all-India rank

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Site Highlight

Class 10 All 1 Mark MCQs, 2026-2021

Practise public exam one-mark questions by subject and year with verified answers and step-by-step solutions.

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Verified Study Bank

3000+ Verified and Validated Answers

Grade 10 & 9 Math and Science textbook answers, exercise solutions, and 10th revision questions checked for exam-ready practice.

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TNPSC Practice — New

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History, Polity, Geography, Science, Economy & Aptitude — 360 free MCQs with explanations, timed mock tests, and topic dashboard.

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UPSC CSE 2025 — New

UPSC CSE Prelims Practice MCQs

History, Geography, Polity, Economy, Science & Technology, and Environment — 120 MCQs with explanations, topic-wise drills, and mock test.

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📚 Samacheer Kalvi · Tamil Nadu State Board · Classes 6–12

Samacheer Kalvi — Find Your Class & Subject

Studying in a Tamil Nadu state-board school? Free Samacheer Kalvi book-back Q&A, MCQs and verified answers for every subject. Pick your class to start. CBSE student? Jump to NCERT →

Class 6
ScienceMathsSocial ScienceEnglishTamil
Class 7
ScienceMathsSocial ScienceEnglishTamil
Class 8
ScienceMathsSocial ScienceEnglishTamil
Class 9
ScienceMathsSocial ScienceEnglishTamil
Class 10 · SSLC
ScienceMathsSocial ScienceEnglishTamil
Class 11
PhysicsChemistryBotanyZoologyMaths
Class 12
PhysicsChemistryBotanyZoologyMaths
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🇮🇳 CBSE · NCERT · National Curriculum (not Tamil Nadu board)

NCERT Solutions — Find Your Class & Subject

Studying the CBSE / NCERT syllabus? Chapter-wise textbook questions with grounded, exam-ready answers — intext questions and full exercises. Pick your class to start.

NCERT Class 6
ScienceMaths
NCERT Class 7
ScienceMaths
NCERT Class 8
ScienceMaths
NCERT Class 9
ScienceMathsSocial ScienceEnglish
NCERT Class 10
ScienceMathsSocial ScienceEnglish
NCERT Class 11
MathsPhysicsChemistryBiology
NCERT Class 12
MathsPhysicsChemistryBiology

🧬 NEET 2027 prep — all 79 NCERT chapters organised by exam → · 📐 JEE Main 2027 prep — all 74 chapters → · 📊 JEE + NEET chapter tests — free, with your all-India rank

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✅ Accuracy promise: every question is verified before it reaches you. Spot an error? Report it — fixed within 24 hours. தவறு கண்டால் சொல்லுங்கள் — 24 மணி நேரத்தில் திருத்துகிறோம்.

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TNTET Revision Challenge

1000+ bilingual Paper I & II MCQs, AI topic drills, 150-question mock test, gap analysis, and 40-day planner. Tamil Nadu state school teachers.

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CTET Practice Questions 2025

CDP, Maths Pedagogy, EVS, Language & Social Studies MCQs with answers. For KV, NVS and central government school teacher jobs across India.

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TNPSC Group 4 Practice

Junior Assistant, Typist, Field Surveyor — History, Polity, Geography, Science, Economy & Aptitude. 120 MCQs, mock test, dashboard.

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TNPSC Group 2 / 2A Practice

Revenue Officer, Sub-Inspector, Commercial Tax — History, Polity, Science, Geography, Economy & Reasoning. 120 MCQs + mock test.

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TNPSC Group 1 Practice

Deputy Collector, DSP level — advanced History, Polity, Economy, Science & Technology, Geography, and Current Affairs. 120 analytical MCQs.

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SSC CGL Practice MCQs 2025

General Intelligence & Reasoning, General Awareness, Quantitative Aptitude, and English Language — 120 bilingual Hindi+English MCQs, mock test, dashboard.

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Reasoning Ability, Quantitative Aptitude, English Language, and Banking & Financial Awareness — 120 bilingual Hindi+English MCQs, topic drill, mock test, dashboard.

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RRB NTPC Practice MCQs 2025

Mathematics, General Intelligence & Reasoning, General Awareness, and General Science — 120 bilingual Hindi+English MCQs, topic drill, mock test, dashboard.

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UPSC CSE Practice MCQs 2025

History, Geography, Polity, Economy, Science & Technology, and Environment — 120 MCQs with explanations, topic-wise drills, and section-wise dashboard.

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🍎 For Teachers — a free classroom toolkit

Build a printable worksheet from 23,000+ real questions, generate a ready lesson plan in seconds, make a word wall, write report-card remarks, grade marks, and grab formula sheets & past papers. No login. Built to save hours of prep.

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Daily Slip Test — new every morning

A printable 5-question class test with answer key, fresh every school day. Pick class & subject once — print in one click each morning.

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Worksheet & Slip-Test Maker

Pull real Samacheer & NCERT questions into a printable worksheet with a matching answer key — pick chapters, types and marks.

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Lesson Plans, Word Wall & Admin

Fun 5E lesson plans, printable word walls, report-card remark writer and a marks-to-grade helper — all free.

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Open the Teacher Toolkit →
📚 All Classes 6–12 📋 Syllabus 🧮 Maths Units 📄 Public Exam Papers 🔬 Grade 9 Science 🧮 Grade 9 Maths Class 12 Physics ✏️ TET Practice 🇮🇳 CTET Practice 🏛️ TNPSC 10th Revision ❓ FAQ 📊 Blueprint ⭐ Important Q Class 10 Science 1-mark Class 10 Maths 1-mark Class 10 English 1-mark Class 12 Maths Class 12 Chemistry Class 12 Bio Zoology 🧮 Score Calculator TNPSC Group 4 TNPSC Group 2 TNPSC Group 1 SSC CGL IBPS PO 🚂 RRB NTPC 🏛️ UPSC CSE 📚 TET CDP 💡 Exam Tips
Why Brain Grain

Serious preparation. Free for the people who need it.

Most of Brain Grain is free — because cost should never be the reason a child or an aspirant can't prepare well. Here's the work behind it, and how we keep it trustworthy.

37,000+
questions, free & no login
850+
chapters solved, Class 6→12
106/106
NEET & JEE chapters live
1,900+
questions in Tamil
₹0
to read, revise & practise
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ads — ever, on any page

The work behind every question — built to actually help you learn

✅ Checked against the actual book

Every answer is written against the real Samacheer Kalvi / NCERT chapter or the official guide — verified for accuracy, not generated once and forgotten.

🎯 Wrong options are real mistakes

Each distractor is a genuine error a student would actually make — so a wrong tap teaches you something, instead of being a throwaway option nobody would pick.

📊 Exam-accurate scoring

A marking engine is tested against the real NTA, TNPSC and board papers — negative marking, partial credit, the lot — so your mock score means what it says.

🔒 Automated quality gates

Content clears validators and layout, SEO and content checks on every release before it can go live. Depth in every subject — not a thin demo. See how we build it →

🚫 Ad-free & distraction-free

No ads, no pop-ups, no clickbait. The page exists to teach you the chapter — nothing is designed to pull your attention away from it.

⚡ Fast on any phone

Mobile-first and lightweight, so it loads quickly on a modest phone and a 4G connection — the devices most students actually use.

🔥 Engaging & motivating

XP, streaks, a weekly leaderboard and a personal readiness path keep you coming back — momentum that turns revision into a daily habit.

🇮🇳 Tamil + English

Study in the language you think in. Chapter answers in English with Tamil-medium support, and bilingual practice for TNPSC, TET and school exams.

❓ Common Questions

Frequently Asked Questions

Which classes and subjects does Brain Grain cover? ▾
Samacheer Kalvi Classes 6 to 12. Classes 6–10 cover Science, Maths, Social Science, English and Tamil; Classes 11–12 cover Physics, Chemistry, Botany, Zoology and Maths. Every subject has a class hub page with chapter-wise Q&A.
Is Brain Grain free to use? ▾
Yes. All chapter book-back Q&A, MCQs, important questions and SSLC public exam papers are free to read, with no login required.
What does each chapter page include? ▾
Each chapter page has the Samacheer Kalvi book-back questions and answers, MCQs, fill-in-the-blanks, true/false, match-the-following and important questions, with answers verified against the textbook.
Does Brain Grain support Tamil and English? ▾
Yes. Content is available in English, and many subjects include Tamil-medium support. TNTET, CTET and competitive-exam practice MCQs are bilingual.
Are SSLC public exam question papers available? ▾
Yes. Class 10 SSLC public exam question papers from 2020 to 2026 are available on the site, along with subject-wise 1-mark MCQ revision by year.
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