Bihar Board 12th Chemistry Answer Key 2025 Out, Download All Sets Question Paper PDF

Bihar Board 12th Chemistry Answer Key 2025 assess their performance on the exam and also allow to learn from their mistakes and prepare better for future exams. The BESB 12th Chemistry Question paper 2025 along with answer key for all sets will be shared soon.

Table of Contents

The Bihar board 12th Chemistry examinations took place on February 07, 2025 [ Friday]. The examinations is held in a single shift starting from 9:45 to 12:45 P.M. After the conclusion of the exam, students will be looking at the correct Bihar Board 12th Chemistry Answer Key 2025 to cross-check their answers whether they mark them correct or not. This analysis of the BSEB Class 12 Chemistry answer key will also help you to pinpoint the areas where you need to improve in future days. We share the detailed analysis along with the Bihar Board 12th Chemistry Answer Key 2025 with analysis on this page.

Bihar Board 12th Chemistry Answer Key 2025

Chemistry is one most crucial subjects for students who are pursuing their intermediate in science and also in various engineering, medical, and paramedical entrance exams. Doing well in the Chemistry in board exams will motivate you if you are going to appear in the NEET / JEE Mains or CUET Examinations for undergraduate admission.

Just after the completion of the exam, our in-house experts started evaluating the Bihar Board 12th Chemistry question papers 2025 for All sets. The BSEB 12th Chemistry Answer key includes all the questions along with the correct answers. This will help candidates to match the answers that they mark in the examination hall and estimate their possible marks in the chemistry paper before the announcement of the results.

BSEB Class 12th Chemistry Exam 2025: Student Reactions

The BSEB Class 12 Chemistry Exam 2025, held on February 7, 2025, was assessed as somewhat tough by students. The exam thoroughly covered all the main topics on the syllabus. Here are the important highlights from the first reaction from the students about the 12th chemistry question paper.

Most students regarded the exam to be quite difficult, with a mix of conceptual and numerical questions.
The Physical Chemistry and Organic Chemistry sections included direct questions.
Some students found the Inorganic Chemistry subject challenging, particularly the questions about chemical bonding and coordination molecules.
The Long Answer Type Questions assessed analytical and application-based knowledge, making them critical for high scores.

Bihar Board 12th Chemistry Question Paper 2025

For security and to maintain the purity of the examination, BSEB will conduct the Class 12th Chemistry Examination over multiple sets. We share the BSEB 12th Chemistry Question Paper 2025 PDF for Set C below. Download now.

BSEB 12th Chemistry Questions with Answers 2025

Students can compare their answers to the correct ones and assess their performance on the exam. The BSEB 12th Chemistry Questions with answer keys id shared in this section

1. Which of the following adsorptions forms multimolecular layer ?
(A) Physical adsorption
(B) Chemical adsorption
(C) Both (A) and (B)
(D) None of these
Ans: (A) Physical adsorption

2. Impurities present in an ore are called
(A) Flux
(B) Gangue
(C) Alloy
(D) Slag

Ans: (B) Gangue

3. The process of smelting involves reduction of metal oxide with
(A) Al
(B) C
(C) Mg
(D) S

Ans: (B) C

4. Lutetium (Lu) is
(A) a transition element
(B) a lanthanide
(C) an actinide
(D) a p-block element

Ans: (B) a lanthanide

5. Which of the following metals is not obtained by electrolysis ?
(A) Na
(B) Mg
(C) Al
(D) Fe

Ans: (D) Fe

6. Which of the following oxides is paramagnetic ?
(A) СО₂
(B) cIo
(C) SO2
(D) SiO

Ans: (A) CO₂

7. Elements of which atomic numbers belong to 3d transition series ?
(A)22 to 30
(B) 21 to 30
(C)21 to 31
(D) 21 to 29

Ans: (B) 21 to 30

7. Which of the following metals is not obtained by electrolysis?
(A) Na
(B) Mg
(C) Al
(D) Fe

BSEB 12th Chemistry Paper Pattern

The Bihar Board Class 12 Chemistry Exam will be held for 100 points, with 70 marks for the theory paper and 30 for the practical exam. The Bihar Board Class 12 Chemistry Question Paper consists of 50% multiple-choice questions (1 mark each) and 50% subjective questions (short and long answers). The BSEB Class 12th Chemistry Exam will consist of 35 multiple-choice questions in the theoretical section. When reviewing the BSEB 12th chemistry answer key, you must refer to the relevant questions at once.