biharboardonline.bihar.gov.in Bihar board 10th objective question pdf download 2021:- As per the schedule, the Bihar School Examination Board conducting the 10th Examination from today (17.02.2021). A lot of parents and students are eager to download, the Answer key for the 10th Objective Question Paper & Answer Key from the official website biharboardonline.bihar.gov.in. But the board always makes some delay on releasing the answer key. So we did a tentative answer key for the Bihar board 10th objective question, We have a teacher’s team willing to do answer key for the students to calm them.
SCIENCE ANSWER KEY DOWNLOAD LINK – VISIT THIS PAGE
Which Mirror is Used for shaving?
| Convex mirror | Plane Mirror |
| Concave Mirror | None of them |
Answer : Concave Mirror
Which is the basis of the classification of the elements in Mendeleev’s periodic law?
| A.Atomic radius | B.Atmomic density |
| C. Atomic number | D. Atomic mass |
Answer : D.Atomic Mass
The ratio of numbers of atoms of nitrogen and hydrogen in ammonia molecule is
| A.3:1 | B.2:1 |
| C. 1:2 | D. 1:3 |
Answer : D 1:3
Which of the following is liquide at room temperature?
| A.Ethane | B.Ethyne |
| C. Ethanol | D. Methane |
Answer : C. Ethanol
Which of the following acids is found in vinegar?
| A.Sulpuric Acid | B.Hydrochloric Acid |
| C.Formic Acid | D. Acetic Acid |
Answer : D. Acetic Acid
The fimalemnt of electric bulb is made of which metal?
| A.Copper | B.Nichrome |
| C.Lead | D. Tungsten |
Answer : D. Acetic Acid
The Purpose of rheostat is
| A.to increase the magnitude of current | B.to decrease the magnitude of current |
| C.both to increase or decrease the magnitute of current | D. None of these |
Answer: B.to decrease the magnitude of current
Which of the following is not process of oxidation?
| A.Combustion | B.Respiration |
| C.Digestion of good | D. Precipitation |
Answer : D. Precipitation
The valancy of oxygen is
| A.1 | B.0 |
| C.2 | D. 3 |
Answer :C.2
The Deviation of which colour of ray is the maximum in white light spectrum?
| A.Red | B.Green |
| C.Yellow | D.Violet |
Answer : D.Violet
Focal length of plan in mirror is
| A.infinity | B.zero |
| C.100cm | D.50cm |
Answer : A.infinity
The body is balanced by the organ
| A.Cerebellum | B.Cranium |
| C.Brain stem | D.Cerebrum |
| A.Cerebellum | B.Cranium |
| C.Brain stem | D.Cerebrum |
A.Cerebellum
Change in body in adolescnce is due to
| A.Testosterone | B.Estrogen |
| C.Thyroxine | D.both A and B |
D.both A and B
bihar board 10th answer key 2021 pdf download
Our teachers have a thought that if a student confused with the answers, they will not perform well in the next examinations. To reduce the anxiety of the students we did a tentative answer key for Bihar Board 10th objective question pdf download for the 2021 batch students.
As per the schedule, the Bihar Board will release the original question paper and official answer key from March every year. preparing answer key is hard work for teachers, so we will releasing the objective answer key first and the full answer key is available for download from the next day
Bihar Board 10th Objective Question Paper & Answer Key 2021
We are ready to publish the original question paper, of Bihar Board 10th Objective Question Paper as quick as possible, we place some of our staff outside the examination centers, to collect the original question papers,We already prepared a van with a portable scanner to scan the original question papers.
Students are adviced to confirm the question paper set number before proceed to verify the answers. The original Bihar Board 10th answerkey is available from 2 pm on words, students are advice to download this in pdf , If there is a error in the tentatie answer key students please comment the correct answer in the bellow section.
class 10th objective question 2021
| Subject | Date | Original Question | Tentative Answer key |
| Science | 17-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Mathematics | 18-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Social Science | 19-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| English (General) | 20-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| First Language – Hindi | 22-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| First Language – Urdu | 22-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| First Language – Bengali | 22-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| First Language – Maithili | 22-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Second Language -Hindi | 23-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Second Language -Sanskrit | 23-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Second Language -Arabic | 23-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Second Language -Persian | 23-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Second Language -Bhojpuri | 23-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Advanced Maths | 23-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Economics | 23-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Commerce | 23-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Sanskrit | 23-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Persian and Arabic | 23-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Home Science | 24-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Music Dance | 24-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
| Fine Arts | 24-02-2021 | Morning Batch Eve Batch | Update Soon Update Soon |
