CBSE exams 2024: Last-Hour revision tips for Class 12 PCB

With the Class 12 board exams kicking off on February 15th, the anticipation is real. Physics, Chemistry, and Biology – the trio that’s been accompanying you throughout – are now in the spotlight. The pressure to revise effectively is peaking, and you’re deep into those last-minute preparations.

Below are some useful tips to guide you through the essentials of last-hour revision, making it simple and straightforward for each subject.


1Formula focus: Prioritise the most essential formulas; create comprehensive flashcards or a cheat sheet for quick and easy reference during the exam.

2. Diagram drill: Delve deep into labelled diagrams, ensuring a thorough understanding. Visual aids not only aid recall but also enhance your ability to explain concepts accurately.

3. Concept mapping: Construct detailed concept maps, interconnecting various ideas within each chapter. This visual approach facilitates a more holistic understanding and reinforces connections between different topics.

4. Mock tests: Engage in rigorous practice with timed mock tests. Simulating exam conditions not only hones your time management skills but also boosts your confidence, making you better prepared for the actual exam environment.


1. Chemical reactions recap: Concentrate on major chemical reactions, creating an in-depth reference sheet that includes reaction mechanisms and any relevant exceptions.

2. Equation essentials: Solidify your understanding of balancing chemical equations. Practice extensively to ensure proficiency in this fundamental skill, as it forms the basis for numerous problems in the Chemistry exam.

3. Periodic Table Prowess: go beyond a basic revision of the periodic table. Explore trends in atomic and molecular properties, linking them to broader concepts within Chemistry for a more nuanced understanding.

4. Memory Aids: Employ mnemonic devices for complex concepts. Craft memorable phrases or associations that encapsulate key information, aiding in quick recall during the exam.


1. Diagrams and Labels: Immerse yourself in labelled diagrams, not only for visual recall but also for a comprehensive understanding of structural relationships. Being able to articulate the functions of each part is as crucial as recognising them.

2. Key Definitions: Create extensive flashcards covering important biological terms. Including not only definitions but also their contextual usage and relevance within different biological processes.

3. Classification Chronicles: Devote additional time to biological classifications. Understanding the intricacies of taxonomy, focusing on distinguishing characteristics and evolutionary relationships between different species.

4. Quick Facts Sheet: Transform your one-page summaries into detailed quick fact sheets. Incorporate examples, case studies, and real-world applications to make your revision more contextual and comprehensive.


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