How XamBaaz works

From your NCERT textbook to your dream rank — one clear path.

Revise the key concepts, drill them with exam-grade quizzes, then prove it on full-length mock tests — with streaks, XP and honest analytics keeping you on track.

How it works

Revise, practise, master — one clear path from concept to rank.

  1. 01

    Sign in with Google

    No passwords, no OTPs. One click and you're in.

  2. 02

    Pick your class & chapter

    Class 8–12, every NCERT subject and chapter, ready to go.

  3. 03

    Revise the Key Concepts

    Skim the chapter's concepts, formulas and exam tips — a 60-second brush-up before you attempt.

  4. 04

    Practise, exam-grade

    10-min, 10-Q quizzes at Easy, Medium or Hard, with +4 / −1 / 0 negative marking from day one.

  5. 05

    Take the Subject Mastery Test

    Once every chapter is done, unlock a 30-Q, 60-min cross-syllabus test — the real proof you're exam-ready.

New·Key Concepts

Brush up the concepts. Then crush the quiz.

Every chapter now opens with a Key Concepts card — a quick revision of the ideas, formulas and exam tips you need before you attempt. 245 chapters across Class 8–12, and it's free for everyone.

  • Concepts, not just answers

    A crisp overview, the must-know ideas, and the exam traps for every chapter — distilled from the NCERT, ready in 60 seconds.

  • Every formula in one place

    Maths, Physics & Chemistry chapters carry a clean formula sheet — no flipping through 40 pages before a quiz.

  • Revise, then attempt

    It sits right above the quiz — skim it, then test yourself while it's fresh. The exact loop toppers swear by.

Revise a chapter free
Key Concepts
Moving Charges & Magnetism · Class 12 Physics

Magnetic forces act on moving charges and currents. This chapter covers the Lorentz force, the Biot–Savart and Ampère laws, and devices like the solenoid and galvanometer.

  • Lorentz forceA moving charge in a magnetic field feels F = qv×B, always perpendicular to its velocity.
  • Force on a currentA current-carrying wire feels F = BIL sinθ — the basis of every electric motor.
  • Ampère's lawUse it for symmetric fields: a long wire gives B = μ₀I / 2πr.
Key formulas
Lorentz force
F = q(E + v×B)
Field of a solenoid
B = μ₀nI
💡 Exam tips
  • The magnetic force does no work — it only changes direction, never speed.
  • Use Ampère's law for symmetric cases (wire, solenoid); Biot–Savart for loops.
Concepts fresh? Now test yourself.Start quiz
Tonight
Hi, Aarav
🔥 12
Lv 7 · Strategist
2,340 / 3,000
Continue practising
Real Numbers
Math · Class 10
88%
Light
Science · Class 10
64%
Federalism
SST · Class 10
42%
Start today's quest →
Practice anywhere

In your bag, on the bus, between classes.

The whole app is mobile-first — quiz, dashboard, settings, every flow. No app to install. No 200 MB download. Works flawlessly on Android and iOS browsers.

  • Auto-saves on every tap — close the tab fearlessly.
  • Resumes where you left off, server timer intact.
  • Works on 2G data — pages are tiny.
Stay hooked

Earn XP. Level up.
Stack streaks.

XamBaaz rewards the only thing that matters: showing up daily and getting better. No leaderboards full of strangers, no shame mechanics — just clear feedback that you're moving forward.

  • Levels from Rookie to Legend — visible on every screen.
  • Streaks for daily practice — even 5 minutes counts.
  • Mastery stars per chapter — three stars for 90%+.
  • Weekly challenges targeting your weakest subject.
A
Aarav
Lv 7 · Mastermind
Class 11 · PCM · JEE prep
Level 7 · Mastermind
2,340 / 3,000 XP
Daily quest
3 / 3
quizzes completed
This week
+1,180
XP earned
Latest badges
🏆
Perfect score
🎯
Sharpshooter
🔥
Week-long streak
Speed demon
Eight levels to climb — every quiz earns XP
🐣
Rookie
0 XP
📖
Learner
50 XP
✏️
Practitioner
151 XP
🧠
Sharp Mind
289 XP
🏅
Topper
459 XP
You're here
🎓
Scholar
656 XP
🧩
Mastermind
879 XP
👑
Legend
1,124 XP
One platform, every exam

Built for CBSE Boards, JEE & NEET.

The NCERT syllabus is the foundation of CBSE Board exams and the bedrock of JEE Main, JEE Advanced and NEET UG. XamBaaz turns it into one daily-practice path — revise, drill at three difficulty levels, then sit a full-length mock.

Class 8–12

CBSE Board Exams

Chapter-wise NCERT MCQ practice for every subject, Key Concepts revision, and board-pattern mock papers — the complete CBSE Class 10 & 12 board exam preparation path.

  • All NCERT subjects, Class 8–12
  • Subject Mastery Tests
  • Board-style mock papers
CBSE board prep guide
Class 11–12 · PCM

IIT JEE — Main & Advanced

Physics, Chemistry and Maths MCQs with the exact +4 / −1 marking, plus full-length JEE Main mock tests — free, NCERT-based online JEE practice you can do daily.

  • Physics · Chemistry · Maths
  • JEE-pattern negative marking
  • Full-length JEE mock tests
Free JEE mock tests
Class 11–12 · PCB

NEET UG

All NCERT Biology, Physics and Chemistry chapters as exam-pattern MCQs, plus full-length NEET mock tests — the NCERT-aligned NEET UG preparation that the exam actually rewards.

  • Biology · Physics · Chemistry
  • NEET-pattern questions
  • Full-length NEET mock tests
Free NEET mock tests
100% NCERT-alignedExam-grade +4 / −1 / 0 marking19,423+ practice questionsNo ads · no spam · data never sold
The difference

Two apps' worth of prep. One affordable platform.

XamBaaz
  • Key concepts to revise before every quiz
  • Chapter-wise practice + Subject Mastery Tests
  • One path for school exams and JEE/NEET
  • Real exam-style negative marking
  • Per-chapter mastery dashboard for parents too
  • 100% NCERT-aligned, ad-free, free to try then ₹999/year
Most apps
  • Straight into questions — no concept recap
  • Endless videos with low recall
  • Separate apps for boards and entrance
  • Vanity scores, no risk-management
  • Same 50 questions on loop
  • Push-notification spam, paid lock-ins
Bithindra Biswas — Founder & CEO of XamBaaz
From the founder

“Every student deserves the same top-tier prep the toppers use — whatever their pin code.”

Bithindra BiswasIIM AhmedabadIIT Bombay faculty20+ yrs experience
Read our story
Begin tonight

One chapter tonight. One step closer to your rank.

Start a 10-question chapter quiz right now — CBSE Boards, JEE or NEET. Master every chapter, then prove it with a full-subject Mastery Test.