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Krishna Kumar Sah

Welcome to Krishna Kumar Sah (ChembyKKSir)– Your Trusted Chemistry Mentor for NEET & JEE!
Led by Krishna Kumar Sah Sir (Ex-ALLEN & IITian’s PACE) with 15+ years of experience. Mentored NEET AIR 75, JEE AIR 48, 1000+ MBBS, 150+ NIT & 50+ IITians. Specializes in NCERT-focused Chemistry for Classes 11, 12 & Repeaters.

🎯 What You’ll Learn:
• Chapter-wise Lectures
• Organic, Inorganic & Physical Simplified
• Named Reactions & Mechanisms
• PYQ Analysis, Mock Tests & Rank Boosting Tips

🧪 Focus: Concept Clarity | Confidence | Consistency
🧑‍🏫 AcademicHead – EURO JEE-NEET, PCMC Pune
📍 Based in PCMC, Maharashtra
📞 WhatsApp: 7703821345
🔔 Subscribe & start your NEET-JEE success journey now!

Students Made My Day Special | A Teacher’s Most Cherished Birthday Celebration 🎂#eurojeeneet

How to Study d & f-Block Elements | Class 12 Inorganic Chemistry Lecture 2 | JEE NEET |ChembyKKSir

Internal Energy & Enthalpy Explained | Thermodynamics & Thermochemistry Lecture | JEE NEET CBSE

Chemical Bonding Lecture 4| Exclusive 6 Rules to Draw Covalent Molecules & Ions Structures

How to Study Inorganic Chemistry | Class 12 CBSE | JEE Main | JEE Advanced | NEET🎓 (ChembyKKSir)

📘 Lecture 4 – Thermodynamics & Thermochemistry Series by Krishna Kumar Sah (ChembyKKSir)

Chemical Bonding Lecture 3 (Part 2) | Exclusive 6 Rules to Draw Covalent Molecules & Ions Structures

📘 L3 P1Adiabatic & Isothermal Reversible & Irreversible Process | Graph&Slope | JEE NEET

📘 Lecture 3 (Part-2) – Thermodynamics & Thermochemistry Series by Krishna Kumar Sah (ChembyKKSir)

Chemical Bonding Lecture 3 (Part 1) | Exclusive 6 Rules to Draw Covalent Molecules & Ions Structures

Amines Class 12 Lecture2[part-2]| Chemical Reactions of Amines & Aniline| JEE • NEET •| ChemByKKSir

Diazonium Salt Reactions of Aniline | Retention & Removal of Diazo Group | ChemByKKSir

Organic Chemistry Lecture 6 | Prefixes, Substituents & Junior Functional Groups | JEE • NEET | CBSE

Amines Class 12 Lecture 2[part-1]|Chemical Reactions of Amines | JEE • NEET • NCERT | ChemByKKSir

Amines Conversions Class 12 | Ethylamine ↔ Methylamine | JEE • NEET • NCERT | ChemByKKSir

Chemical Bonding Lecture 2 (Part 2) | Exclusive 6 Rules to Draw Covalent Molecules & Ions Structures

Chemical Bonding Lecture 2 (Part 1) | Why Chemical Bonds Form, Octet Rule, Bond Energy Explained

Amines Class 12 Lecture 1 | Preparation of Amines & Aniline | JEE • NEET • NCERT | ChemByKKSir

“Bridging the gap between home and school! 🏫✨ Our teachers at Euro #JEE #NEET PCMC shared insights

Organic Chemistry Lecture 5 | Naming of Side Chains & Substituents (IUPAC Nomenclature Basics)

📚 HEAT EXCHANGE in Thermodynamics - Full Concept Explained (Class 11 Chemistry)

Chemical Bonding Lecture 1 P2 | Covalent Bond & Lewis Structure | JEE Main + CBSE Class 11

📚 HEAT EXCHANGE in Thermodynamics - Full Concept Explained (Class 11 Chemistry)

📚 Work Done in Thermodynamics - Full Concept Explained (Class 11 Chemistry)

Chemical Bonding Lecture 1 P1| Introduction & Types of Bonds | JEE + NEET + CBSE 11 | ChembyKKSir

Periodic Table Full Chapter – Chemical Properties, Oxides, Hydrides & Oxyacids | NEET JEE Chemistry”

“Aldol Reaction Masterclass 🧪 | Self, Cross, Intramolecular | JEE, NEET, CBSE Class 12 Chemistry”

Cannizzaro Reaction | Complete Organic Chemistry Lecture| Class 12 CBSE | JEE Main & Advanced | NEET

🧪 Reduction of Organic Compounds in ONE SHOT | Class 11 & 12 Chemistry | NEET | JEE Main & Advanced