CBSE Class 10 Science Session 2 Answer Key 2026 LIVEKey Event
CBSE Class 10 Science Session 2 Answer Key 2026 LIVE: Welcome to CollegeDekho’s live coverage of CBSE Class 10 Science Session 2 (Improvement/Compartment) Exam 2026! As the exam is ongoing today, May 18, 2026, from 10:30 AM to 1:30 PM , thousands of students across India are tackling the Science paper for Subject Code 086. To help you evaluate your performance the moment you step out of the exam hall, our team of subject-matter experts will be releasing the highly anticipated, unofficial CBSE Class 10 Science Session 2 Answer Key 2026 across all question paper sets. Bookmark this live blog now for instant access to these expert-verified set-wise answers, real-time student reactions, and a comprehensive paper difficulty level analysis as soon as the exam concludes!
CBSE Class 10 Science Session 2 Answer Key 2026 Set-wise Answer Key
Our CollegeDekho Board Expert, Mahima Gupta , will be preparing the unofficial answer keys for all question paper sets distributed in the exam today.
- The comprehensive set-wise answer keys and PDF solutions will be available right here shortly after the exam concludes at 1:30 PM.
CBSE Class 10 Science Set Code | Question Paper PDF | Answer Key / Solutions PDF |
|---|---|---|
Set 1 | Available Soon after 01:30 PM | Link Active Soon |
CBSE Class 10 Science Passing Marks 2026 for Theory Paper
Students taking the Session 2/Improvement exams must achieve a minimum of 33% overall in each subject to pass Class 10, according to CBSE guidelines. For the 80-mark theory paper, aim for at least 26 to 27 marks, along with the minimum passing marks in internal assessments.
Component | Maximum Marks | Minimum Passing Marks (33%) |
|---|---|---|
Theory Paper | 80 Marks | 26 - 27 Marks |
Internal Assessment / Practical | 20 Marks | 07 Marks |
Grand Total | 100 Marks | 33 Marks |
CBSE Class 10 Science Expected Section-wise Good Attempts
The CBSE Class 10 Science question paper has 39 questions in five sections. To achieve a good score or meet the improvement threshold, experts recommend optimal attempt counts for each section based on time management and difficulty.
Section & Question Type | Total Questions | Expected Good Attempts (For a 60+ Score) | Safe Attempts (To Pass Comfortably) |
|---|---|---|---|
Section A: MCQs & Assertion-Reason (Q1–20) | 20 Questions (1 mark each) | 16 – 18 Questions | 10 – 12 Questions |
Section B: Very Short Answer (Q21–25) | 5 Questions (2 marks each) | 4 Questions | 2 – 3 Questions |
Section C: Short Answer (Q26–31) | 6 Questions (3 marks each) | 5 Questions | 3 Questions |
Section D: Long Answer (Q32–34) | 3 Questions (5 marks each) | 2 – 3 Questions | 1 – 2 Questions |
Section E: Case-Based/Source-Based (Q35–37) | 3 Questions (4 marks each) | 2 Questions | 1 – 2 Questions |
Overall Paper | 39 Questions (80 Marks) | 30+ Questions | 18+ Questions |
Live Note: These are projected benchmarks based on the CBSE Class 10 blueprint. Our expert will update the expected attempts after the question papers are evaluated post 1:30 PM.
CBSE Class 10 Science Session 2 Answer Key 2026 Live Updates
11 15 AM IST - 18 May'26
Blueprint Check: Chemistry Unit Carries Maximum Evaluation Weight
As students progress through the early stages of the paper, a glance at the official CBSE Class 10 Science blueprint highlights that Unit I: Chemical Substances - Nature & Behaviour commands the maximum weightage along with Biology, standing at a massive 25 marks. This unit includes core chapters such as Acids, Bases and Salts, Metals and Non-metals, and Carbon and its Compounds. Scoring well in the chemical reaction equations and properties sections under this unit is highly instrumental for students aiming to cross the passing threshold comfortably today.
11 00 AM IST - 18 May'26
Focus Shifts To Section A: Navigating MCQs And Assertion-Reasoning
Inside the exam halls, students are currently immersed in Section A, which forms the foundation of the question paper. This section comprises 20 objective-type questions, including 1-mark Multiple Choice Questions (MCQs) and critical Assertion-Reasoning questions. While Section A offers an excellent opportunity to secure a quick 20 marks, it can often feature tricky, conceptual trap choices designed to test a student's fundamental clarity in NCERT concepts, particularly in chapters like Chemical Reactions and Equations and Light - Reflection and Refraction.
10 45 AM IST - 18 May'26
Writing Time Begins: Students Tackle The 80-Mark Paper
The 15-minute reading time is over, and students have begun writing their responses for the Class 10 Science paper, which is worth 80 marks and lasts 3 hours, ending at 01:30 PM. There are 39 mandatory questions, and students should start with the high-scoring Objective Type questions in Section A before tackling the heavier descriptive sections.
10 30 AM IST - 18 May'26
Science Session 2 Exam Commences; Question Papers Distributed
The clock strikes 10:30 AM, and the CBSE Class 10 Science Session 2 exam is officially underway across the country. Invigilators have distributed the question booklets across various sets (Set 1, Set 2, and Set 3). Students are now entering their crucial 15-minute reading window, which lasts until 10:45 AM. During this period, candidates are strictly instructed not to write anything on their answer scripts but to comprehensively analyze the structure of the paper, identify optional questions, and plan their time management strategy across the five distinct sections.
10 21 AM IST - 18 May'26
Live Blog Active: CBSE Class 10 Science Session 2 Coverage Begins
The final countdown is officially underway for the CBSE Class 10 Science Session 2 (Improvement/Compartment) examination. With just 10 minutes left before candidates are handed their question papers, thousands of students across India have already entered their respective examination halls and taken their seats. Today’s paper (Subject Code 086) holds immense importance for those aiming to clear their compartment boundaries or significantly boost their overall aggregate percentages. CollegeDekho's dedicated exam desk is live, and our board expert, Mahima Gupta, is stationed to bring you the fastest, most accurate set-wise unofficial answer keys immediately after the conclusion of the exam at 01:30 PM. Ensure you bookmark this URL now to receive instantaneous access to question paper PDFs, real-time student feedback, and deep-dive difficulty analyses!
