The Central Board of Secondary Education (CBSE) is conducting the board exams for Class 12th. Today, students appeared for the Biology exam.
The Class 12th Biology exam was held for 1.5 hours. The question paper was distributed at 11:10 am and 20 minutes were given to read the paper. The answer sheets were distributed at 11:30 am and the exam was concluded at 1 pm.
This year the board exam was held differently. There were MCQs based questions which were divided into three sections- A, B and C. There were a total of 60 questions and out of which students were required to answer 50 questions.
Section A and section B had 24 questions each, out of which students were required to attempt 20 questions from each section. Section C had 12 questions and students were needed to answer only 10 questions.
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Here’s the answer key of CBSE Class 12th Biology exam
CBSE Answer Key 2021 Class 12 biology for QP Code No. 057/2/4
| Question no. | Answer Key | Question no. | Answer Key | Question no. | Answer Key |
| 1. | c | 2. | b | 3. | d |
| 4. | a | 5. | a | 6. | d |
| 7. | c | 8. | b | 9. | d |
| 10. | c | 11. | b | 12. | a |
| 13. | b | 14. | b | 15. | a |
| 16. | b | 17. | d | 18. | b |
| 19. | b | 20. | c | 21. | c |
| 22. | b | 23. | c | 24. | a |
| 25. | c | 26. | c | 27. | d |
| 28. | a | 29. | b | 30. | b |
| 31. | d | 32. | a | 33. | c |
| 34. | b | 35. | d | 36. | d |
| 37. | c | 38. | b | 39. | a |
| 40. | c | 41. | c | 42. | c |
| 43. | d | 44. | c | 45. | d |
| 46. | d | 47. | b | 48. | d |
| 49. | b | 50. | a | 51. | a |
| 52. | a | 53. | d | 54. | a |
| 55. | b | 56. | c | 57. | b |
| 58. | d | 59. | b | 60. | c |