2 Best Videos to Watch for Most Important Class 12 Chemistry Topics (Board Booster)

The CBSE Class 12 Chemistry board exam is one of the highest-scoring subjects if you revise strategically. With the Chemistry paper scheduled on 28 February 2026, students often worry about covering the entire syllabus in the final days. Chemistry has definitions, reactions, numerical problems, and application-based questions that require clarity, speed, and structured answer writing.

Instead of starting new topics at the last minute, focus on repeated board questions, high-weightage concepts, and chapter-wise priority revision. These two booster videos help you revise the most repeated and important topics systematically so you can walk into the exam hall confident and prepared.

Why Chemistry Revision Is Crucial Before Boards

The CBSE Class 12 Chemistry board exam tests:

• 2–3 mark questions - Key definitions, basic reactions, and conceptual explanation.

• 5 mark questions - Mechanisms, derivations, numerical problems and structured answers.

• Numerical problems - Especially from Equilibrium, Thermodynamics, Electrochemistry and Chemical Kinetics.

• Application-based questions - Questions that test your understanding and application of concepts.

Many students lose marks because they:

• Forget important conditions of reactions

• Skip key steps in mechanisms

• Miscalculate numerical problems

• Fail to structure longer answers properly

That’s why revising important topics, repeated questions, and numerical strategies together is essential.

1) Most Repeated Topics in Chemistry | Day 1 to Day 30 | Board Booster

This session is designed specifically for last-minute Chemistry revision by focusing on the most repeated topics from previous board exams. It breaks down each topic across the syllabus, highlights ideas that have appeared again and again, and helps you identify what’s most likely to come in your board exam.

This video helps you:

• Revise repeated questions and concepts day-wise

• Identify patterns in board questions

• Clarify tricky areas with quick explanations

• Prioritize revision in the last days

Key Focus Areas Covered:

• Redox reactions & oxidation number concepts

• Chemical kinetics basics

• pH and buffer solutions

• Electrochemistry and cell potentials

• Coordination compounds — nomenclature and isomerism

• Organic reaction mechanisms

• Biomolecules, polymers, and chemistry in everyday life

• Important equilibrium questions

By the end of this session, you should have a clear idea of which topics are board favorites and which ones can add easy marks with smart revision.

 2) Class 12th Chemistry Most Important Topics — Chapter Wise

This session goes chapter by chapter and helps you pin down the most important topics that have high board weightage. Instead of randomly revising, this video gives you a structured path to revise core concepts and understand exactly what you need to remember.

This video helps you:

• Break the entire syllabus into high-yield topics per chapter

• Understand where most questions come from

• Focus your revision on board-oriented concepts

• Save time by leaving out low-probability content

High-Yield Chapters Include:

• Solid State & Solutions: Important formulas, types of solids, concentration units

• Electrochemistry: Cell diagrams, EMF, Faraday’s laws, applications

• Chemical Kinetics: Rate laws, order of reaction, collision theory

• Equilibrium: La Chatelier’s principle, Kc and Kp, ionic equilibrium

• p-Block Elements: Unique properties and reactions (especially Group 16 & 17)

• Coordination Compounds: Ligands, geometry, naming, magnetic properties

• Organic Chemistry: Reaction mechanisms, functional group transformations

• Polymers & Biomolecules: Features, uses, and case-based questions

This video acts as your board booster — especially valuable when you don’t have time to re-teach topics from scratch.

How to Use These 2 Videos Tonight Before the Chemistry Exam

Step 1: Watch “Chemistry Most Repeated Topics” to identify board-favourite areas and repeated patterns.

Step 2: Watch “Chemistry Most Important Topics — Chapter Wise” to revise high-yield topics systematically.

Step 3: Make a one-page revision sheet with key formulas, conditions, mechanisms, and numerical problem tricks.

Step 4: Practice 15–20 previous year questions that are repeated or structurally similar.

Step 5: Do final flashcard revision of key definitions and reactions.

Why This Smart Revision Strategy Can Improve Your Score

CBSE mark distribution follows step-wise evaluation. Even if your final answer isn’t perfect, writing:

• Correct keywords

• Clear definitions

• Proper numerical steps

• Well-structured long answers

Following these tips helps you to secure the maximum possible marks.

Focused revision improves:

• Answer clarity

• Time management

• Confidence level

• Accuracy in numerical problems

• Overall performance