CBSE Sample Question Papers Class 12 Chemistry (For 2025 Exam)

The Class 12 Chemistry Sample Question Papers for the 2025 CBSE exam are tailored to assess students’ understanding of theoretical concepts, problem-solving skills, and practical applications. Below is an outline of the key points and a description:

1.     Exam Pattern & Marking Scheme

1. Section A: MCQs + Assertion and Reasoning – 16 questions of 1 marks each
2. Section B: Short Answer Type Questions – I – 5 questions of 2 marks each.
3. Section C: Short Answer Type Questions II – 7 questions of 3 marks each.
4. Section D: Case Based Questions – 2 questions of 4 marks each.
5. Section E: Long Answer Type Questions – 3 questions of 5 marks each.

2.     Description of Questions

1. MCQs and Objective Questions: Test conceptual clarity (e.g., identify incorrect statements, match the columns, or complete reactions).
2. Numerical Problems: Primarily from Physical Chemistry (e.g., calculating molarity, colligative properties, and rate constants).
3. Theoretical Questions: Derivations, mechanisms, and explanations (e.g., derivation of Raoult’s Law, SN2 vs. SN1 mechanism).
4. Reaction-Based Questions: Focus on Organic Chemistry (e.g., naming reactions, predicting products, writing mechanisms).
5. Application-Based and HOTS Questions: Application of concepts to real-life situations (e.g., electrochemical cells in industry, drug action mechanisms).
6. Practical Skill-Based Questions: Questions derived from practical experiments, such as salt analysis or titration.

3.     Recommendations for Preparation

1. Focus on NCERT Textbook: The CBSE paper is closely based on NCERT content.
2. Practice Reactions and Mechanisms: Memorize key reactions, reaction mechanisms, and conditions.
3. Strengthen Numerical Skills: Practice numerical problems from Physical Chemistry.
4. Revise Practical Knowledge: Review salt analysis, titration, and chemical tests.
5. Attempt Sample Papers: Solve CBSE sample papers and previous year papers to improve speed and accuracy.
6. Prepare a Formula and Reaction Sheet: Summarize all formulas, important reactions, and constants for quick revision.