ISC Class 12 Chemistry Weightage 2025:
The Council for the Indian School Certificate Examinations (CISCE) administers the senior school exam known as the Indian School Certificate (ISC). Class 11 and 12 exams are covered in this exam. Board exams are administered nationwide by the authorities for Class 12. Students benefit from more equitable competition as a result.
The ISC Class 12 Chemistry question paper design, exam format, and estimated unit-wise weighting based on the shared sample paper are all covered in this article. To be prepared for the final test, students need to verify their information.
ISC Class 12 Chemistry Weightage 2025
The ISC Class 12 Chemistry exam for 2025 is divided into three key sections: Physical Chemistry, Inorganic Chemistry, and Organic Chemistry, forming the 80-mark theory paper. The practicals are allotted, emphasizing experimental skills, project work, and the practical file.
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This structure highlights the importance of a balanced understanding of theoretical concepts and hands-on experimentation. Mastery of these sections is vital as they lay the foundation for advanced studies in science, develop analytical and problem-solving skills, and prepare students for future academic and professional pursuits.
ISC Class 12 Preparation Tips 2024
ISC Class 12 Chemistry Question Paper Design 2024-25
The question paper will be divided into two portions, each of which will have six questions. There will be subparts to each question. A fair choice will be provided in Section B, but no choice will be provided in Section A. View all of the information in the table below:
ISC Class 12 Chemistry Question Paper Design 2024-25
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Section
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Question Number
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Type of Question
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Marks
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A
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1 (15 Subparts)
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Multiple Choice Questions (MCQs)
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15
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2 (5 Subparts)
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Short Answer Questions
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5
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Match The Following
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5
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Fill in the blanks and Matching
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5
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Identification & Explanation
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5
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Structural and IUPAC Name Questions
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5
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B (Any Four)
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3 (4 Subparts)
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Short Answer Type
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10
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4 (4 Subparts)
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Long Answer Type
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10
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5 (4 Subparts)
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Long Answer Type
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10
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6 (4 Subparts)
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Long Answer Type (3 marks each)
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10
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7 (3 Subparts)
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Numerical/Calculation Type Questions
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10
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8 (4 Subparts)
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Long Answer Type
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10
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Total
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80
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ISC Class 12 Chemistry Unit-Wise Weightage 2025
The questions from the most recent ISC Class 12 Chemistry Specimen paper were used to create the table below. This unit-wise weighting is based on the quantity of questions from a topic and their scores.
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ISC Class 12 Chemistry Unit-Wise Weightage 2025
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Unit
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Approximate Marks
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Unit 1: Some Basic Concepts of Chemistry
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4
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Unit 2: Structure of Atom
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4
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Unit 3: Classification of Elements and Periodicity in Properties
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4
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Unit 4: Chemical Bonding and Molecular Structure
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6
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Unit 5: States of Matter
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4
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Unit 6: Thermodynamics
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4
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Unit 7: Equilibrium
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4
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Unit 8: Redox Reactions
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5
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Unit 9: Hydrogen and its Compounds
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5
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Unit 10: s-Block Elements
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4
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Unit 11: Some p-Block Elements
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4
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Unit 12: Organic Chemistry
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6
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Unit 13: Environmental Chemistry
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3
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Unit 14: Chemical Industries
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5
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ISC Class 12 Chemistry Exam Pattern 2025
The information presented in the table below clarifies the question types found in the ISC 12th Chemistry exam. The CISCE-released specimen paper is the source of this data.
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ISC Class 12 Chemistry Exam Pattern 2025
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Type of Question
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Number of Questions
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Multiple Choice Questions (MCQs)
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15 (Q1)
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Short Answer Questions
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4 (Q2, Q3, Q4, Q5)
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Matching/Fill in the Blanks
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5 (Q2)
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Long Answer Type Questions
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4 (Q6, Q7, Q8, Q9)
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Numerical/Calculation Type
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1 (Q7)
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Identification and Explanation
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4 (Q4)
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IUPAC Name and Structural Formulas
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2 (Q5)
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ISC Class 12 Chemistry Exam 2025 Preparation Tips
Understand the Syllabus and Weightage
: Familiarize yourself with the ISC Chemistry syllabus, focusing on key areas like Physical, Organic, and Inorganic Chemistry. Allocate study time according to weightage, with extra emphasis on Organic Chemistry.
Conceptual Clarity
: Build a strong understanding of concepts rather than rote memorization. Chemistry topics often involve interconnected ideas.
Practice Numericals
: Dedicate time to practicing numerical problems in Physical Chemistry, including mole concepts, equilibrium, and electrochemistry.
Master Organic Reactions
: Memorize reactions, mechanisms, and named reactions systematically. Create flashcards for quick revisions.
Focus on Inorganic Chemistry
: Review periodic table trends, coordination compounds, and chemical bonding thoroughly.
Regular Revision
: Keep revisiting concepts, formulas, and key points to reinforce memory.
Solve Previous Years’ Papers
: Practice ISC past papers and sample questions to understand the exam pattern and time management.
Prepare for Practicals
: Regularly practice titrations, qualitative analysis, and experiment-related questions. Maintain a well-documented practical file.
