ISC Chemistry Exam 2026 LIVE: Most Important Questions; Weightage & Formulas
The ISC Chemistry Exam 2026 is on February 23, 2026, from 2 PM to 5 PM, worth 70 marks. It has 4 sections and 21 questions in total. Section A has 14 one-mark questions, while Sections B, C, and D offer internal choices. Candidates should focus on revising high-weightage topics for last-minute preparation.
ISC Chemistry Exam 2026: As you know, the ISC Chemistry 2026 exam is knocking at the door, and the candidates should utilize this golden hour wisely. Do not learn any new topics, instead revise the already learned chapters. Candidates are advised to revise the high-weightage topics more with extra attention during their last-minute preparation.The ISC Chemistry Paper 1 theoretical exam will be held on February 23, 2026, from 2 PM to 5 PM.The ISC Paper 1 Chemistry exam is worth 70 marks and is divided into four sections, with 21 questions. Section A has 14 subparts, and each question is worth 1 mark. Sections B, C, and D have 10 questions, 7 questions, and 3 questions, respectively.Candidates will get internal choices provided in Sections B, C, and D. Candidates will get marks as per the sectional weightage if they correctly answer the questions. Note that no negative marking is there for the incorrect answers.
ISC Chemistry Exam 2026: Important Highlights
Here are the major highlights related to the ISC Chemistry 2026 exam:
Particulars | Details |
ISC 12th exam date 2026 | February 23, 2026 (Monday) |
ISC Class 12 exam time | In the afternoon, from 2 PM to 5 PM |
Total marks | 70 marks |
Total sections | 4 sections
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Section-wise questions asked |
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Section-wise marks distribution |
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Number of questions asked | 1 mark, 2 marks, 3 marks, and 5 marks |
Note that before starting the exam, the candidates will be given Chemistry questions to read at 1.45 PM. They will not be allowed to start answering before 2 PM.
ISC Chemistry Exam 2026 LIVE
Feb 21, 2026 05:00 PM IST
What are the priority topics from Physical Chemistry for ISC 12th exam 2026?
Name of the Chapters Important Topics Electrochemistry - Nernst Equation and its applications
- Molar Conductivity and Faraday’s Laws
Chemical Kinetics - First-order reaction numericals
- Arrhenius Equation
Solutions - Raoult's Law
- Colligative Properties (specifically Elevation in Boiling Point and Osmotic Pressure)
Feb 21, 2026 04:40 PM IST
What are the priority topics from Organic Chemistry for ISC 12th exam 2026?
- Name Reactions: Aldol Condensation, Cannizzaro, Reimer-Tiemann, Rosenmund Reduction, and Hoffmann Bromamide Degradation
- Conversions: Practice the "Roadmap" questions as much as possible, and your focus should also be on increasing/ decreasing the carbon chain lengths
- Prioritize the Functional Groups: Tollens’/Fehling's (Aldehydes), Lodoform (Methyl ketones), and Carbylamine (Primary amines).
Feb 21, 2026 04:20 PM IST
Quick Revision Checklist in Golden Hour
Branches Revision Checklist Organic Chemistry SN1 vs SN2 mechanisms and name reactions Physical Chemistry Nernst Equation and Integrated Rate Laws for numericals Inorganic Chemistry IUPAC naming for coordination compounds and the properties of KMnO₄/K₂Cr₂O₇ Feb 21, 2026 04:00 PM IST
What is the Branch-Wise Marks Distribution?
Branch Weightage Organic Chemistry 31 marks Physical Chemistry 25 marks Inorganic Chemistry 14 marks