CBSE Class 12 Biology Question Paper Set 2 (57/5/2) 2025: PDF, Answer Key & Analysis

The CBSE Class 12 Biology Question Paper Set 2 (57/5/2) 2025 is the official Biology board exam paper for Class 12, issued by CBSE in March 2025.

• It is one of the different paper sets/codes distributed across exam centers.
• Covers the full Biology syllabus as per the latest NCERT guidelines.
• Follows the updated CBSE pattern and marking scheme.
• Useful for board, NEET, and competitive exam preparation.

Biology Set 2 (57/5/2) 2025 had a moderate difficulty level, with a mix of memory-based and application-based questions.

• About 35% questions were easy (direct from NCERT).
• Around 45% moderate (application/diagram/case-based).
• Approximately 20% challenging (higher-order thinking, genetics, ecology).
• Well-prepared students generally found it manageable and scoring.

The primary difference is the sequence and wording of questions, not syllabus coverage.

• All sets, including Set 1 and Set 2, cover the full Class 12 Biology syllabus.
• Questions may be rearranged or framed differently to ensure exam integrity.
• Difficulty level is balanced across all sets by CBSE standards.

The marking scheme for CBSE Biology Set 2 (57/5/2) 2025 is as follows:

• Section A: 20 marks (MCQs/objectives)
• Section B: 12 marks (Short Answer I – 2 marks each)
• Section C: 21 marks (Short Answer II – 3 marks each)
• Section D: 15 marks (Long/case-based – 5 marks each)
• Total: 80 marks

Yes, the CBSE official answer key and marking scheme for Set 2 (57/5/2) include stepwise marking for each question.

• Points are allotted for each key step, diagram, or explanation.
• Partial marks are awarded for partially correct answers, especially in SA and LA questions.
• MCQs get 1 mark per correct answer, without partial credit.

Practicing with this paper boosts exam readiness and confidence.

• Familiarizes you with actual CBSE exam patterns and question trends.
• Improves time management by simulating real exam conditions.
• Highlights important chapters and recurring question types.
• Helps self-assessment via marking scheme and answer key.

All CBSE Biology paper sets are designed to be of similar difficulty and syllabus coverage.

• CBSE moderates questions to maintain equal difficulty across different set codes.
• Minor differences may exist in question arrangement or phrasing.

The CBSE Class 12 Biology 2025 paper covers NCERT content, which is the foundation for NEET Biology.

• Many concepts, diagrams, and terminologies overlap with those asked in NEET.
• Practicing with board papers strengthens basics required for NEET entrance.

CBSE releases official question papers and marking schemes with answer keys for evaluation purposes.

• Full solved answer booklets (student-written) are not usually released officially.
• Teacher-verified solutions may be available on top educational platforms.

The 2025 Biology Set 2 (57/5/2) covers the entire CBSE Class 12 Biology syllabus:

• Reproduction
• Genetics and Evolution
• Biology in Human Welfare
• Biotechnology and Its Applications
• Ecology and Environment

The official answer key and marking scheme are released by CBSE in both English and Hindi for some regional sets.

• Check the CBSE academic portal or ask your school for the Hindi version.