The Board conducted the CBSE Class 12 Biology board exam from 10:30 a.m. to 1:30 p.m. Several online educational platforms released the unofficial CBSE 12th Biology exam answer key PDF. Students who would like to calculate their scores and get an initial assessment of their performance should make use of this CBSE 12th Bio paper answer key PDF.
CBSE has issued a reminder for schools to submit the List of Candidates (LOC) for board exams 2026. As per the schedule issued earlier, the last date to submit the details of candidates without a late fee is September 30.
It should be noted that CBSE does not publish official CBSE 12th answer key on its official website, cbse.gov.in. Students have to rely upon unofficial sources such as, Educational YouTube channels, various coaching institutes websites to download the CBSE Class 12 Biology answer key.
In this article, students can find the direct download link to CBSE Class 12 Biology answer key 2025 PDF which is to be added based on its availability soon after the conclusion of exam. Students can also check the CBSE 12 Biology Question Paper here.
In the following table, we have mentioned details of the CBSE 12th bio exam highlights related to its answer key release date and time. The direct links to download the CBSE 12th biology answer key have also been placed and have been activated.
Questions no. | Answer key |
1- | D |
2- | D |
3- | B |
4- | B |
5- | D |
6- | B |
7- | D |
8- | C |
9- | B |
10- | B |
11- | D |
12- | A |
13- | A |
14- | C |
15- | A |
16- | C |
Particulars | Date and Details |
CBSE 12th Biology exam date | March 25, 2025 (10:30 a.m. to 1:30 p.m.) |
CBSE Class 12 Biology answer key release date | After completion of the exam |
CBSE 12th Biology answer key PDF for Set 1 | PDF link to be updated soon |
CBSE Class 12 Biology answer key link for Set 2 | |
CBSE Class 12 Biology answer key link for Set 3 |
Having knowledge of the CBSE 12th marks allocation and marking scheme for the CBSE 12th board exam of Biology helps calculate the scores. Students must first download the CBSE Class 12 Biology answer key 2025 PDF and assign themselves marks as per the paper pattern and marking scheme mentioned in the table below:
Type of Questions | No. of Questions | Marks |
1 Mark | 16 | 16 |
2 Marks | 5 | 10 |
3 Marks | 7 | 21 |
4 Marks | 2 | 8 |
5 Marks | 3 | 15 |
Total | 33 | 70 |
Frequently Asked Questions (FAQs)
No, there is no negative marking.
The CBSE 12th Bio exam will conclude on March 25, 2025, at 1:30 p.m. Students can expect the answer key to be available around 3 p.m. onwards. Various educational portals may release answer keys for all sets even sooner. The direct link to the answer key will be provided in the article above as soon as it is available.
The Biology exam answer key for the CBSE 12th exam is prepared by various subject experts and educators. Hence, the chances of errors are minimal. However, students must wait for the CBSE 12th results 2025 to accurately determine their scores.
On Question asked by student community
Hello,
The date of 12 exam is depends on which board you belongs to . You should check the exact date of your exam by visiting the official website of your respective board.
Hope this information is useful to you.
Hello,
Class 12 biology questions papers 2023-2025 are available on cbseacademic.nic.in , and other educational website. You can download PDFs of questions papers with solution for practice. For state boards, visit the official board site or trusted education portal.
Hope this information is useful to you.
Hello Pruthvi,
Taking a drop year to reappear for the Karnataka Common Entrance Test (KCET) is a well-defined process. As a repeater, you are fully eligible to take the exam again to improve your score and secure a better rank for admissions.
The main procedure involves submitting a new application for the KCET through the official Karnataka Examinations Authority (KEA) website when registrations open for the next academic session. You must pay the required application fee and complete all formalities just like any other candidate. A significant advantage for you is that you do not need to retake your 12th board exams. Your previously secured board marks in the qualifying subjects will be used again. Your new KCET rank will be calculated by combining these existing board marks with your new score from the KCET exam. Therefore, your entire focus during this year should be on preparing thoroughly for the KCET to achieve a higher score.
For more details about the KCET Exam preparation,
CLICK HERE.
I hope this answer helps you. If you have more queries, feel free to share your questions with us, and we will be happy to assist you.
Thank you, and I wish you all the best in your bright future.
Yes, you can switch from Science in Karnataka State Board to Commerce in CBSE for 12th. You will need a Transfer Certificate from your current school and meet the CBSE school’s admission requirements. Since you haven’t studied Commerce subjects like Accountancy, Economics, and Business Studies, you may need to catch up before or during 12th. Not all CBSE schools accept direct admission to 12th from another board, so some may ask you to join Class 11 first. Make sure to check the school’s rules and plan your subject preparation.
Hello
For the 12th CBSE Hindi Medium board exam, important questions usually come from core chapters like “Madhushala”, “Jhansi ki Rani”, and “Bharat ki Khoj”.
Questions often include essay writing, letter writing, and comprehension passages. Grammar topics like Tenses, Voice Change, and Direct-Indirect Speech are frequently asked.
Students should practice poetry questions on themes and meanings. Important questions also cover summary writing and translation from Hindi to English or vice versa.
Previous years’ question papers help identify commonly asked questions.
Focus on writing practice to improve handwriting and presentation. Time management during exams is key to answering all questions effectively.
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