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The Bihar School Examination Board (BSEB) completed the crucial BSEB Matric Science exam on February 20, 2025. The examination was successfully conducted in two shifts at all exam centers of Bihar. As the exam is now over, students can obtain the Bihar Board 10th Science Question Paper 2025 and Bihar Board Class 10 Science Answer Key 2025 here.
Bihar Board 10th Science Question Paper and Answer Key 2025
The Bihar Board class 10th answer key 2025 as been prepared by the highly experienced faculty of Ada247. The exam for the 1st shift or sitting was organized from 9:30 AM to 12:45 PM while the second shift exam was held from 2 PM to 5:15 PM. As the exam of both shifts have been concluded, students can check Bihar Board class 10 science question paper and answer key 2025 along with the exam analysis.
Bihar Board Class 10 Science Question Paper 2025 PDF Download
Students can download the Bihar Board Class 10th Science question paper 2025 PDF here for both exam shifts. The Bihar Board Class 10th Science question paper 2025 for all sets has been made available below for free download. Students can use the question paper pdf as a source while checking their answers using the answer key.
Bihar Board Class 10th Science Answer Key 2025
Our experts have provided the solutions for short answer type MCQs asked in the BSEB Matric science exam 2025. Students can check and download the Science exam answer key for all question paper sets. The Bihar Board Class 10 Science official answer key 2025 will be released soon on the BSEB website. The answers of every question have been highlighted in bold letters.
1. किशोरावस्था में होने वाले परिवर्तन को कहते हैं
(A) विविधता
(C) प्यूबर्टि
(B) अंकुरण
(D) इनमें से कोई नहीं
The changes that take place during adolescence are called
(A) Diversity
(C) Puberty
(B) Germination
(D) None of these
2. निम्नलिखित में कौन परिवार नियोजन साधनों में प्रयुक्त एक प्रभावी उपाय है ?
(A) डायफ्रॉम
(B) कंडोम
(C) कॉपर टी.एवं लूप
(D) इनमें से सभी
Which of the following is an effective measure used in family planning?
(A) Diaphragm
(B) Condom
(C) Copper T and loop
(D) All of these
3. एटाविज्म का क्या अर्थ है ?
(A) संतति में जनकों के गुणों का आना
(B) संतति में जनकों के गुणों का नहीं आना
(C) संतति में पूर्वजों के गुणों का आना, जो जनकों में नहीं है
(D) इनमें से सभी
What is the meaning of atavism?
(A) Inheritance of parental characteristics in progeny
(B) No inheritance of parental characteristics in progeny
(C) Inheritance of ancestral characteristics in progeny, which are not in parents
(D) All of these
4. किसी जीव की जीनी संरचना कहलाती है
(A) फेनोटाइप
(C) आनुवंशिकता
(B) जीनोटाइप
(D) विविधता
The genetic structure of an organism is called
(A) Phenotypе
(B) Genotype
(C) Heredity
(D) Diversity
5. प्राकृतिक चयन द्वारा जीवों का विकास कहलाता है
(A) मेंडलवाद
(B) लामार्कवाद
(C) सूक्ष्म विकास
(D) डार्विनवाद
The evolution of organisms by natural selection is called
(A) Mendelism
(B) Lamarckism
(C) Micro-development
(D) Darwinism
6. जैव आवर्धन प्रदर्शित करने वाला रसायन है
(A) CFC
(B) ADP
(C) ATР
(D) DDT
The chemical which shows biomagnification is
(A) CFC
(B) ADP
(C) ATР
(D) DDT
7. प्राथमिक उपभोक्ता कहलाते हैं
(A) अपघटक
(B) सर्वाहारी
(C) मांसाहारी
(D) शाकाहारी
Primary consumers are called
(A) Decomposer
(B) Omnivorous
(C) Carnivorous
(D) Vegetarian
8. CFC का व्यापक उपयोग होता है
(A) जेट इंजनों में
(B) रेफ्रीजरेटरों में
(C) एयर कंडीशनरों में
(D) इनमें से सभी
CFC is widely used in
(A) Jet engines
(B) Refrigerators
(C) Air conditioners
(D) All of these
9. हवा में स्वतंत्र रूप से लटका हुआ क्षैतिज चुम्बक हमेशा आराम की स्थिति में रहता है
(A) किसी भी दिशा में
(B) पूरब-पश्चिम दिशा में
(C) उत्तर-दक्षिण दिशा में
(D) इनमें से कोई नहीं
A horizontal magnet hanging freely in the air always comes to rest in
(A) Any direction
(B) East-West direction
(C) North-South direction
(D) None of these
10. यदि एक विद्युत प्रवाहयुक्त तार के समीप कम्पास रखा जाता है, तो यह कम्पास की सुई
(A) विचलित होगी
(B) धारावाही तार विचलित होगी
(C) विचलित नहीं होगी
(D) इनमें से कोई नहीं
If a compass is placed near a wire carrying an electric current, then the compass needle-
(A) Will be deflected
(B) The current-carrying wire will be deflected
(C) Will not be deflected
(D) None of these
11. फैराडे ने बहुत से क्रांतिकारी खोजें की जिनमें शामिल है
(A) विद्युत चुंबकीय प्रेरण
(B) विद्युत अपघटन के नियम
(C) (A) और (B) दोनों
(D) इनमें से कोई नहीं
Faraday made many revolutionary discoveries, including
(A) Electromagnetic induction
(B) Law of electrolysis
(C) Both (A) and (B)
(D) None of these
12. विद्युत मोटर परिवर्तित करता है।
(A) रासायनिक ऊर्जा को विद्युत ऊर्जा में
(B) विद्युत ऊर्जा को यांत्रिक ऊर्जा में
(C) यांत्रिक ऊर्जा को विद्युत ऊर्जा में
(D) विद्युत ऊर्जा को रासायनिक ऊर्जा में
An electric motor converts
(A) Chemical energy into electrical energy
(B)Electrical energy into mechanical energy
(C)Mechanical energy into electrical energy
(D)Electrical energy into chemical energy
13. फ्लेमिंग के बाम हस्त नियम में बायें हाथ की तर्जनी संकेत करती है।
(A) चुम्बकीय क्षेत्र की दिशा
(B)चालक पर आरोपित विद्युत बल की दिशा
(C)चालक में प्रवाहित विद्युत धारा की दिशा
(D) इनमें से कोई नहीं
In Fleming’s left-hand rule, the index finger of the left hand indicates
(A)Direction of magnetic field
(B)Direction of electric force applied on the conductor
(C)Direction of electric current flowing in the conductor
(D)None of these
14.किसी चालक तार से बिद्युत धारा प्रवाहित करने पर तार के ऊपर तथा नीचे किस प्रकार के चुंबकीय क्षेत्र पैदा होते हैं?
(A) विपरीत प्रकार के
(B)समान प्रकार के
(C) किसी भी प्रकार के नहीं
(D)इनमें से कोई नहीं
When electric current flows through a conducting wire, what type of magnetic field is generated above and below the wire?
(A) Opposite type
(B)Similar type
(C) Not of any kind
(D)None of these
15. जलविद्युत ऊर्जा किस प्रकार का ऊर्जा स्रोत है ?
(A) नवीकरणीय
(B)अनवीकरणीय
(C)(A) और (B) दोनों
(D) इनमें से कोई नहीं
What type of energy source is hydroelectric energy?
(A)Renewable
(B)Non-renewable
(C)Both (A) and (B)
(D)None of these
16. कौन-सी गैस वैश्विक ऊष्मण के लिए उत्तरदायी है ?
(A) नाइट्रोजन
(B)कार्बन डाइआक्साइड
(C)ऑक्सीजन
(D) इनमें से कोई नहीं
Which gas is responsible for global warming?
(A) Nitrogen
(B)Carbon dioxide
(C)Oxygen
(D)None of these
17. ब्यूटेन के कितने समावयवी संभव हैं ?
(A)2
(B)3
(C)4
(D)5
How many isomers of butane are possible?
(A)2
(B) 3
(C) 4
(D) 5
18. मिथेन के अणु का आकार होता है
(A) एकरेखीय
(B)वलयाकार
(C) समचतुष्फलकीय
(D) अष्टफलकीय
The shape of the methane molecule is
(A)Linear
(B)Annular
(C) Tetrahedral
(D)Octahedral
19. कार्बनिक यौगिकों में कार्बन की संयोजकता होती है।
(A) 1
(C) 3
(B) 2
(D) 4
The valency of carbon in organic compounds is
(A) 1
(C) 3
(B) 2
(D) 4
20. निम्न में से कौन संतृप्त हाइड्रोकार्बन है ?
(A) ऐल्केन
(B)ऐल्कीन
(C) ऐल्काइन
(D) इनमें से कोई नहीं
Which of the following is a saturated hydrocarbon?
(A) Alkane
(C) Alkyne
(B) Akene
(D) None of these
Bihar Board Class 10 Science Exam Paper 2025 Analysis
According to the early responses from students and teachers, the exam was of moderate to high difficulty. Although certain students considered the paper to be well-balanced, others pointed out that several questions, particularly in Physics and Chemistry, were challenging. Here are the main replies provided by students and educators.
Students’ Reaction
Several students considered the exam to be somewhat challenging. Here are several typical responses:
- The multiple-choice questions were challenging, as certain queries needed a grasp of concepts.
- Physics was more challenging in comparison to Chemistry and Biology.
- Chemistry questions were even and primarily derived from the textbook.
- Biology was relatively simpler.
Teachers’ Review
Teachers assessed the paper as well-organized and in accordance with the curriculum.
- A science instructor from a leading school in Bihar stated, “The exam was intended to evaluate understanding of concepts.” Although Physics was difficult, Chemistry and Biology were manageable.
- Another educator stated, “The MCQ portion was equitable, and students who revisited past exam papers would have found it simpler.”
- Teachers also highlighted that the paper was in accordance with the syllabus while assessing analytical abilities.
Bihar Board Class 10th Science Answer Key 2025 PDF
Students taking the BSEB Class 10th Science board exam 2025 can view unofficial answer key PDF for every question paper set available in the exam here. Our expert faculty for Science at Adda247 prepares the unofficial solutions PDF for all questions asked in the board paper. Stay tuned to this page to check the correct answers in PDF format.