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The Bihar Board 12th Chemistry Answer Key 2024 is crucial for students who took the chemistry exam paper of the Bihar Board on 6th February 2024. The BSEB class 12 chemistry answer key will not only help students predict their score in the chemistry exam but will also help them challenge the marks awarded for re-evaluation in case of any error in mark calculation. The official Bihar class 12 answer key 2024 will be released in March by the BSEB (Bihar School Education Board).
Bihar Board 12th Chemistry Answer Key 2024
The Bihar Board 12th chemistry answer key has been released by experts who are highly experienced with more than 20 years of experience in teaching chemistry for the board exams and competitive exams like NEET and JEE. The class 12th answer key of the Bihar board chemistry exam paper 2024 consists of answers for the MCQs (Multiple Choice Questions). Along with the MCQs, the answer key will also contain solutions from the descriptive part of the exam.
Bihar Board 12th Chemistry Question Paper 2024
The Bihar Board class 12th Chemistry question paper consists of both Multiple Type Questions (MCQs) and descriptive questions. The total weightage of the Bihar Board class 12 chemistry question paper is 70 marks. The actual exam paper Bihar Board 12th Chemistry is based on the Bihar Board class 12 Model Question Paper. The exam pattern and the weightage of each of the section was same as like the BSEB 12th Chemistry model question paper. The exam pattern is given below for the BSEB 12th exam paper 2024.
| Section | Total Questions | Questions To Be Answered | Marks |
| A | 70 | 35 | 35 x 1 = 35 |
| B | 20 (Short Answer Type Questions) | 10 | 10 x 2 = 20 |
| 6 (Short Answer Type Questions) | 3 | 3 x 5 = 15 | |
| Total | 70 | ||
BSEB 12th Chemistry Question Paper 2024 Design
Before checking the answer key, students must know the question paper design in order to know how to check the answers. The BSEB 12th chemistry question paper 2024 design was already released by the BSEB and the same design was followed in the 2024 board exam paper. The Question Paper of the BSEB class 12 Chemistry had two sections/parts, namely section A and section B. The BSEB Class 12 Question Paper Design 2024 is given below for each sections.
Section A: Objective/Multiple Choice Type Questions
- There were a total of 70 questions in this section, of which only 35 were to be answered by the students.
- If more than 35 questions are answered by any student, then only the first 35 will be evaluated for marking.
- Each question of this section carries 1 mark, so the sectional weightage becomes 50 marks.
Section B: Descriptive Type Questions
The Section B of the Chemistry exam paper of the Bihar Board class 12 contains descriptive type questions. The Section B has two types of questions. The detail of the questions-type asked in the Section B is given below.
Short-answer questions
- There ware a total of 20 short questions in this part of the section, of which only 10 were to be answered by the students.
- If more than 10 short questions are answered by any student, then only the first 10 will be evaluated for marking.
- Each question of this section carries 2 mark, so the total marks allocated for short answer-type questions was 20 marks.
Long-answer questions
- There were a total of 6 long questions in this part of the section B, of which only 3 were to be answered by the students.
- If more than 3 long questions are answered by any student, then only the first 3 will be evaluated for marking.
- Each question of this part carries 5 mark, so the total marks allocated for long answer-type questions was 15 marks.
Bihar Board Chemistry Answer Key 2024
The MCQs question asked in the 7 February exam of the Bihar Board class 12th Chemistry along with its answers are given below.
Q.1) A vitamin which plays a vital role in the coagulation property of blood is
A) Vitamin A B) Vitamin D
C) Vitamin E D) Vitamin K
Ans: D) Vitamin K
Q.2) Chloramine-T is a/an
A) Disinfectant B) Antiseptic
C) Analgesic D) Antipyretic
Ans: A) Disinfectant
Q.3) Hydrazine is a drug which is used in the treatment of which of the following?
A) Malaria B) Typhoid
C) Cholera D) Tuberculosis
Ans: D) Tuberculosis
Q.4) Which of the following is an alkaloid
A) Nicotine B) Atropine
C) Cocaine D) All of these
Ans: C) Cocaine
Q.5) Which of the following is a natural rubber?
A) Isoprene B) Nitrocellulose
C) Polyethylene D) Bakelite
Ans: A) Isoprene
Q.6) A raw material used in making nylon is
A) Ethylene B) Butadiene
C) Adipic acid D) Isoprene
Ans: C) Adipic Acid
Q.7) F2C = CF2 is a monomer of which of the following?
A) Teflon B) Glyptal
C) Nylon-6 D) Buna-S
Ans: A) Teflon
Q.8) The structure of XeF4 is
A) Tetrahedral B) Octahedral
C) Square Planar D) None of these
Ans: C) Square Planar
Q.9) Which of the following halogens does not exhibit a positive oxidation state?
A) I B) Br
C) Cl D) F
Ans: D) F
Q.10) Which of the following has the smallest bond angle
A) H2O B) H2S
C) H2Se D) H2Te
Ans: D) H2Te
Q.11) Which of the following has maximum number of unpaired electrons?
A) Mg2+ B) Ti3+
C) V3+ D) Fe3+
Ans: D) Fe3+
Q.12) The maximum oxidation state of chromium is
A) +2 B) +3
C) +4 D) +6
Ans: D) +6
Q.13) The number of unpaired electrons in Cu2+ ion (Z=29) is
A)0 B) 1
C) 2 D) 3
Ans: B) 1
Q.14) Which of the following metals is generally found in free state?
A) Cu B) Au
C) Al D) Fe
Ans: B) Au
Q.15) Which of the following statements are true?
A) All ores are minerals
B) All minerals are ores
C) A mineral cannot be an ore
D) An ore cannot be a mineral
Ans: A) All ores are minerals
Bihar Board Chemistry Answer Key 2024 Class 12 All Sets
The Bihar Board class 12 Chemistry exam has been successfully concluded on 7th February in the first shift at 12:45 PM. The chemistry exam’s paper was divided into 10 sets to avoid any chances of cheating. These sets were named from A to J. Each of the sets contained the same number and type of questions with shuffled questions’ number. As the exam is now over, the experts have released the answer key for all the sets of the class 12 Chemistry paper. The answers given in the answer key are error free and 100% accurate. Check out the Answer Key given below for all sets below.
Bihar Board Chemistry Answer Key 2024 Set E
The answer key for all the set E has been released by the experts. Check the answer key for the MCQs given in the set E of the class 12 chemistry paper 2024 of the Bihar Board.
| Bihar Board 12th Chemistry Answer Key 2024 for Set E | |||
| Question Number | Correct Answer | Question Number | Correct Answer |
| 1 | D | 36 | B |
| 2 | A | 37 | B |
| 3 | D | 38 | D |
| 4 | C | 39 | A |
| 5 | A | 40 | D |
| 6 | C | 41 | D |
| 7 | A | 42 | B |
| 8 | B | 43 | A |
| 9 | C | 44 | D |
| 10 | D | 45 | D |
| 11 | D | 46 | A |
| 12 | D | 47 | B |
| 13 | D | 48 | C |
| 14 | B | 49 | C |
| 15 | B | 50 | B |
| 16 | A | 51 | D |
| 17 | A | 52 | B |
| 18 | C | 53 | B |
| 19 | C | 54 | B |
| 20 | B | 55 | B |
| 21 | B | 56 | A |
| 22 | B | 57 | D |
| 23 | D | 58 | D |
| 24 | A | 59 | B |
| 25 | D | 60 | A |
| 26 | C | 61 | B |
| 27 | D | 62 | B |
| 28 | D | 63 | D |
| 29 | B | 64 | A |
| 30 | B | 65 | C |
| 31 | D | 66 | A |
| 32 | A | 67 | D |
| 33 | A | 68 | D |
| 34 | B | 69 | D |
| 35 | B | 70 | B |
Bihar Board 12th Chemistry Answer Key PDF 2024
The answer key pdf for all the sets of the Class 12 chemistry exam paper of the Bihar board will be provided on this page. Students should bookmark this page to get the answer key PDF to evaluate their responses and calculate their exam marks. The answer key (un official) has been provided below for the Set E question paper of the Bihar board class 12 chemistry exam.
Bihar Board 12th Chemistry Answer Key 2024: Set E PDF
Bihar Board Class 12 Chemistry Question paper 2024 PDF
The BSEB class 12th chemistry question paper PDF is given below for the convenience of students. Candidates will be able to check their answers by taking the reference of the questions given in the real exam question paper.
Download Bihar Board 12th Chemistry Question Paper 2024 PDF
Bihar Board Class 12 Chemistry Short Answer Type Questions 2024
Q) Write the names and formulae of two ores of iron.
Q) Why is cryolite ore used in the extraction of Al metal?
Q) Which is Rosenmund reduction?
Q) How is Polypeptide bond formed?
Q) What is carbyl amine reaction?
Q) What is mole fraction?
Q) Write Raoult’s law of relative lowering of vapour pressure.
Q) Explain effective atomic number.
Q) What is Brownian movement?
Q) What are network solids? Give an example.
BSEB Inter Chemistry Long Answer Type Questions 2024
Q) What do you understand by rate of a reaction? What factors affect the rate of a reaction? Discuss.
Q) What is soap? How does it act in the cleansing of clothes?
Q) Write the principle of manufacture of ammonia by Haber’s Process. How does it react with CuSO4 solution?
Q) How would you distinguish among primary, secondary, and tertiary alcohols?
Q) Explain the following with examples”
(i) Aldol condensation (ii) Cannizzaro’s reaction
Bihar Board 12th Chemistry Paper Analysis 2024
The exam paper analysis based on the response of the students who took the chemistry board exam is out now. It is to be noted that the students’ reaction is subjective and the expert analysis will be provided after sometime. Based on the students’ review, the exam analysis of the Bihar Board class 12 Chemistry is given below.
- There were no questions that were found to be outside of the syllabus, and the paper adhered to the guidelines.
- The questions were assigned correctly based on the weighting assigned to each unit.
- A few pupils had trouble with the section on organic and inorganic chemistry.
- The exam was fairly easy overall, with a moderate difficulty level.
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