Chemistry Simplified.
Learning Amplified.
Learn Chemistry with Er. Vikram Sagar — 11+ years of teaching Chemistry in Kota and Delhi, and founder of All The Classes. Organic Chemistry made logical, for JEE, NEET and CBSE Class 11–12.
Er. Vikram Sagar
Founder, All The Classes
Free Resources
Coming soon. Ask on WhatsApp to be told when each one is ready.
PYQ Intelligence
Previous Year Questions
Chapter-wise previous year questions for NEET and JEE Chemistry.
Formula Vault
Quick Revision
Physical Chemistry formulas on one sheet, for quick revision.
Reaction Maps
Organic Visualization
Flowcharts that connect the main organic reactions.
Daily Challenge
Test Your Logic
5 New Questions everyday (Easy/Medium/Hard) to keep you sharp.
Chemistry Batches
Chemistry for JEE, NEET, board exams and defence exams — in Micro-8 batches of at most 8 students.
JEE Advanced
Main + Advanced
Stereochemistry and multi-step synthesis, built up from reaction mechanisms.
NEET Chemistry
Concepts & Practice
Understand mechanisms instead of memorising lists, with timed practice for the Chemistry section.
Board Exams
Class 11 & 12 CBSE / State
NCERT chapter by chapter, with written-answer and practical/viva practice.
Defence Exams
NDA / CDS
Chemistry for the General Science section of NDA and CDS.
Chemistry Emergency Room.
"Sir mujhe Aldehyde Ketone samajh nahi aa raha!" Don't panic. Type your problem below — it opens WhatsApp, and Vikram sir's team replies with the right notes and practice.
Targeted Notes
Video Explanation
PYQ Analysis
Practice Sheet
The Sagar Library
Vikram sir's handwritten notes and books. Ask on WhatsApp for availability and price.
Hardcover Book
Organic Alchemy Vol 1
A visual guide to Organic reaction mechanisms for JEE and NEET.
Coming soon
Digital + Printed
Visual Logic Handwritten Notes
Vikram sir's own class notes, for quick revision.
Ask for price
Pocket Guide
Physical Chemistry Shortcuts
Short methods for kinetics and equilibrium questions.
Coming soon
Visualizing
Organic
Mechanisms.
Stuck in SN1/SN2? Send your doubt here. Vikram sir's way is to explain the logic before the formula — the team replies on WhatsApp.
Multi-step questions broken into small, clear steps.
Visual hooks that make mechanisms easier to remember.