CBSE Class 12th Chemistry exam today; checklist, things to revise

Some tips to optimize readiness across the 3 branches of chemistry

Physical Chemistry

— Begin by revisiting each chapter to reinforce fundamental concepts.
— Assemble a comprehensive list of essential formulas for quick reference.
— Engage in solving numerical problems from NCERT exercises, ensuring accurate application of formulas and units.
— Memorise key laws, definitions, and their applications like Henry’s law, Raoult’s law, Ideal solutions, azeotropes, molar conductivity, Kohlrausch Law, Reactions of batteries, temperature
— Pay special attention to graphs, especially those illustrating zero and first-order reactions, activation energies, and temperature dependencies.

After completing NCERT exercises, review all question types—MCQs, short answers, assertion-reason, and long answers from the exemplar.

Organic Chemistry

— Focus on nomenclature, preparation methods, physical properties, and chemical properties. Make Road map of reactions for better retention.
— Create lists of reasoning questions, named reactions, and mechanisms for each chapter.
— Incorporate resonance structures or relevant diagrams to support your explanations where necessary.
— When illustrating reaction mechanisms, accurately depict electron movement with correct arrow notation.
— Remember all the monomers, type of linkages, classification and structures of polymers in chapter Biomolecules

Practice NCERT and exemplar exercises focusing on important reactions, conversions, functional group differentiation, nomenclature, and reasoning questions.

Inorganic Chemistry

— Read the NCERT textbook attentively, focusing on graphs and tables.
— Understand the preparation and redox reactions of potassium dichromate (K₂Cr₂O₇) and potassium permanganate (KMnO₄).
— Learn the elements of the first transition series, lanthanoids, and actinoids, including their atomic numbers and electronic configurations. Comprehend lanthanoid contraction and its effects.
— To effectively revise the chapter on Coordination Compounds, focus on key areas: Nomenclature, Isomerism, Valence Bond Theory (VBT), Crystal Field Theory (CFT), Synergic Bonding Practice drawing and interpreting diagrams related to Crystal Field Splitting and synergic bonding .
— Practice questions in both the NCERT textbook and Exemplar.

Things to do in the last day of revision

— Ensure adequate sleep before the exam to keep your mind fresh and alert.
— A day before, prepare your stationery, admit card, and ID card to avoid last-minute stress.
— Reach the examination centre ahead of time to settle in and reduce anxiety.
— Use pre-exam time to carefully fill in personal details on your answer sheet, such as roll number, centre code.
— During the reading period thoroughly review the question paper. Mark questions that seem challenging or time-consuming for later attention.
— Allocate specific time slots to each section based on marks distribution.
— Clearly label each answer with the correct question number to avoid confusion.
— Present answers in bullet points and underline key words.
— Writing balanced chemical equations and drawing necessary structures, such as resonance forms, is crucial.
— Always include appropriate units in numerical answers to ensure completeness.
— Aim to complete the paper 15 minutes before the stipulated time and revise the answer sheet.

(The author is from Shiv Nadar School, Faridabad)