Bihar Board 10th Science Model Paper 2025-26

Bihar Board 10th Science Model Paper 2025-26: Here is a Science Model Paper with Solutions for students preparing for the Bihar Board (BSEB) Class 10th examination in 2026.

By practicing with this model paper, you can score good marks in the board exam. This model paper is designed according to the latest exam pattern and syllabus of the Bihar Board.

Step-by-step solutions are provided for all questions to help students understand more easily. You can download the Bihar Board 10th Science Model Paper 2025-26 with Solutions in PDF format for free from the links given below.

Bihar Board 10th Science Model Paper 2025-26 PDF

Bihar Board 10th Science Model Paper 2025-26

Bihar Board 10th Science  Model Paper 2026 (Official)

Physics

Set - 1

Set - 2

Set - 3

Chemistry

Set - 1

Set - 2

Biology

Set - 1

Set - 2

Bihar Board 10th Science Model Paper 2025-26: Exam Pattern (Official)

The official pattern of Bihar Board 10th Science (Compulsory) exam is as follows:

विवरण (Details)	जानकारी (Information)
Board	BSEB (Bihar Board)
Examination	Secondary School Examination (माध्यमिक स्कूल परीक्षा)
Class	10th (Matric)
Subject	Science (विज्ञान)
Paper Type	Compulsory (अनिवार्य)
Subject Code	112
Full Marks	80 (Theory)
Practical Marks	20
Grand Total	100
Total Questions	138 (80 + 24 + 6 + 24 + 4)
Total Printed Pages	30
Exam Duration	2 Hours 45 Minutes
Paper Type	Objective + Subjective
Sections	Section A + Section B
Passing Marks	33%
Negative Marking	No

Bihar Board 10th Science Model Paper 2025-26: Question Paper Pattern (Official)

Section	Question Type	Total Questions	Attempt	Marks Each	Total Marks
Section A (खण्ड-अ)	Objective (MCQ)	80	40	1 Mark	40 Marks
Section B (खण्ड-ब)	Short Answer	24	12	2 Marks	24 Marks
Section B (खण्ड-ब)	Long Answer	6	3	5-6 Marks	16 Marks
Total Theory	-	110	55	-	80 Marks
Practical	-	-	-	-	20 Marks
Grand Total	-	-	-	-	100 Marks

Section A: Objective Questions (OMR Based) – Official Pattern

Details	Information
Question Type	Objective (MCQ)
Total Questions	80
Questions to Attempt	40
Marks per Question	1 Mark
Total Marks	40 Marks
Answer Sheet	OMR Sheet
Pen to Use	Blue/Black Ball Pen
Evaluation	First 40 answers evaluated if more attempted

Important Instructions for Section A (खण्ड-अ के लिए निर्देश):

• In SECTION-A, there are 80 objective type questions, out of which any 40 questions are to be answered.
• Each question carries one mark.
• If a candidate answers more than 40 questions, then answer of first 40 questions will be evaluated only.
• For answering these, darken the circle with blue/black ball pen against the correct option on OMR Answer Sheet provided to you.
• Do not use whitener/liquid/blade/nail etc. on OMR Answer sheet; otherwise, the result will be treated invalid.

Section B: Subjective Questions – Official Pattern

Short Answer Questions (लघु उत्तरीय प्रश्न):

Subject	Total Questions	Attempt	Marks Each	Total Marks
Physics (भौतिक शास्त्र)	8	4	2 Marks	8 Marks
Chemistry (रसायन शास्त्र)	8	4	2 Marks	8 Marks
Biology (जीव विज्ञान)	8	4	2 Marks	8 Marks
Total Short Answer	24	12	-	24 Marks

Long Answer Questions (दीर्घ उत्तरीय प्रश्न):

Subject	Total Questions	Attempt	Marks Each	Total Marks
Physics (भौतिक शास्त्र)	2	1	6 Marks	6 Marks
Chemistry (रसायन शास्त्र)	2	1	5 Marks	5 Marks
Biology (जीव विज्ञान)	2	1	5 Marks	5 Marks
Total Long Answer	6	3	-	16 Marks

Important Instructions for Section B (खण्ड-ब के लिए निर्देश):

• In SECTION-B, there are 24 short answer type questions. Out of these, eight questions are from Physics, eight questions are from Chemistry and eight are from Biology.
• Four questions are to be answered from each subject (Physics, Chemistry and Biology). Each question carries 2 marks.
• Apart from these, there are 6 Long Answer Type Questions, two questions each from Physics, Chemistry and Biology.
• Long Answer Type Questions from Physics carries 6 marks each, and from Chemistry and Biology carries 5 marks each.
• Answer of one question each from Physics, Chemistry and Biology is compulsory.

Bihar Board 10th Science 2025-26: Marks Distribution

Part	Marks	Percentage
Objective (Section A)	40 Marks	50%
Subjective (Section B)	40 Marks	50%
Total Theory	80 Marks	100%
Practical	20 Marks	-
Grand Total	100 Marks	-

Subject-wise Marks Distribution:

Subject	Objective	Short Answer	Long Answer	Total Theory
Physics	~13 Marks	8 Marks	6 Marks	~27 Marks
Chemistry	~13 Marks	8 Marks	5 Marks	~26 Marks
Biology	~14 Marks	8 Marks	5 Marks	~27 Marks
Total	40 Marks	24 Marks	16 Marks	80 Marks

Bihar Board 10th Science 2025-26: Chapter-wise Weightage

Physics (भौतिक शास्त्र) Chapters:

Chapter No.	Chapter Name	Expected Weightage
1	प्रकाश का परावर्तन तथा अपवर्तन (Light - Reflection and Refraction)	6-8 Marks
2	मानव नेत्र तथा रंगबिरंगा संसार (Human Eye and Colourful World)	4-5 Marks
3	विद्युत (Electricity)	6-8 Marks
4	विद्युत धारा के चुंबकीय प्रभाव (Magnetic Effects of Electric Current)	4-5 Marks
5	ऊर्जा के स्रोत (Sources of Energy)	3-4 Marks

Chemistry (रसायन शास्त्र) Chapters:

Chapter No.	Chapter Name	Expected Weightage
1	रासायनिक अभिक्रियाएँ एवं समीकरण (Chemical Reactions and Equations)	5-6 Marks
2	अम्ल, क्षारक एवं लवण (Acids, Bases and Salts)	5-6 Marks
3	धातु एवं अधातु (Metals and Non-metals)	5-6 Marks
4	कार्बन एवं उसके यौगिक (Carbon and its Compounds)	5-6 Marks
5	तत्वों का आवर्त वर्गीकरण (Periodic Classification of Elements)	4-5 Marks

Biology (जीव विज्ञान) Chapters:

Chapter No.	Chapter Name	Expected Weightage
1	जैव प्रक्रम (Life Processes)	6-8 Marks
2	नियंत्रण एवं समन्वय (Control and Coordination)	5-6 Marks
3	जीव जनन कैसे करते हैं (How do Organisms Reproduce)	5-6 Marks
4	अनुवांशिकता एवं जैव विकास (Heredity and Evolution)	4-5 Marks
5	हमारा पर्यावरण (Our Environment)	3-4 Marks
6	प्राकृतिक संसाधनों का प्रबंधन (Management of Natural Resources)	3-4 Marks

Bihar Board 10th Science 2025-26: Marking Scheme

Question Type	Marks	Marking Method
Objective (MCQ)	1 Mark	Correct answer = 1 mark
Short Answer (2 Marks)	2 Marks	Step-wise marking
Long Answer - Physics	6 Marks	Step-wise marking with diagrams
Long Answer - Chemistry/Biology	5 Marks	Step-wise marking with diagrams

Detailed Marking Criteria:

Question Type	Marking Criteria
MCQ (1 Mark)	Full mark for correct answer
Short Answer (2 Marks)	Definition/Formula - 0.5 marks, Explanation - 1 mark, Example - 0.5 marks
Long Answer - Physics (6 Marks)	Formula - 1 point, Figure - 1.5 points, Derivation/Explanation - 2.5 points, Answer - 1 point
Long Answer - Chem/Bio (5 Marks)	Definition - 1 point, Picture - 1 point, Explanation - 2 points, Example - 1 point

General Instructions for Candidates (परीक्षार्थियों के लिए निर्देश)

क्र.सं.	Instructions
1	Candidates must enter his/her Question Booklet Serial No. (10 Digits) in the OMR Answer Sheet.
2	Candidates are required to give their answers in their own words as far as practicable.
3	Figures in the right hand margin indicate full marks.
4	An extra time of 15 minutes has been allotted for the candidates to read the questions carefully.
5	This Question booklet is divided into two sections - SECTION-A and SECTION-B.
6	Use of any electronic appliances is strictly prohibited.

Important Tips for Exam Preparation (परीक्षा की तैयारी के लिए टिप्स)

1. Read the NCERT textbook thoroughly - give equal importance to all three subjects.
2. Practice drawing diagrams a lot - diagrams are very important in science.
3. Make a list of formulas and revise daily.
4. Learn to balance chemical equations.
5. Practice numerical problems (Physics & Chemistry).
6. Solve model papers and previous year questions.
7. Focus on practical knowledge - 20 marks are for practical.
8. Make sure to draw diagrams in your long answers.
9. One long answer from each subject is mandatory - prepare.
10. Practice time management - complete in 2 hours and 45 minutes.