CBSE Class 12 Biotechnology Compartment Set 4

Q: How many questions are there in the CBSE Class 12 Biotechnology Compartment 2026 paper (Set 4 - 99/7)?

The paper has 33 questions in five sections (A to E) and all of them are compulsory.

Q: How much time is given for the CBSE Class 12 Biotechnology Compartment 2026 paper?

The paper is of 3 hours (10:30 AM to 1:30 PM). The question paper is distributed at 10:15 AM and candidates get 15 minutes to read it before they start writing.

CBSE Class 12 Biotechnology Compartment Set 4 - (99/7) Question Paper 2026 is available for download here. CBSE conducted the Class 12 Biotechnology Compartment (supplementary) examination on July 28, 2026, from 10:30 AM to 1:30 PM. The Biotechnology paper is of 70 marks and the time allowed is 3 hours. This paper carries the Q.P. code 99/7 and is of Set 4. The question paper was handed out at 10:15 AM, and the first 15 minutes were given for reading it.

The paper has 33 questions in five sections, A to E, and all questions are compulsory. Section A has 16 multiple choice questions of 1 mark each, Section B has 5 very short answer questions of 2 marks each, Section C has 7 short answer questions of 3 marks each, Section D has 2 case study-based questions of 4 marks each and Section E has 3 long answer questions of 5 marks each. There is no overall choice, but an internal choice is given in a few questions of Sections B to E.

CBSE Class 12 Biotechnology Compartment Set 4 - (99/7) Question Paper 2026 PDF

CBSE Official PDF	CD PDF	CD PDF with Solutions
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CBSE Class 12 Biotechnology Compartment 2026 Set 4 - (99/7) Exam Pattern and Marking Scheme

Section	Questions	Question Type	Marks per Question	Marks
A	Q1 - Q16	Multiple choice questions	1	16
B	Q17 - Q21	Very short answer (VSA) questions	2	10
C	Q22 - Q28	Short answer (SA) questions	3	21
D	Q29 - Q30	Case study-based questions	4	8
E	Q31 - Q33	Long answer (LA) questions	5	15
Total	33 questions			70

CBSE Class 12 Biotechnology Compartment 2026 Set 4 - (99/7) Question Paper FAQs

Ques. How many questions are there in the CBSE Class 12 Biotechnology Compartment 2026 paper (Set 4 - 99/7)?

Ans. The paper has 33 questions in five sections (A to E) and all of them are compulsory.

Ques. How are the marks divided in the Biotechnology Compartment 2026 paper?

Ans. Section A carries 16 marks, Section B 10 marks, Section C 21 marks, Section D 8 marks and Section E 15 marks, for a total of 70 marks.

Ques. Is there any internal choice in the paper?

Ans. There is no overall choice. An internal choice is given in a few questions in all the sections except Section A.

Ques. How much time is given for the CBSE Class 12 Biotechnology Compartment 2026 paper?

Ans. The paper is of 3 hours (10:30 AM to 1:30 PM). The question paper is distributed at 10:15 AM and candidates get 15 minutes to read it before they start writing.

Ques. When was the CBSE Class 12 Biotechnology Compartment 2026 exam held?

Ans. The Class 12 compartment (supplementary) paper of Biotechnology was held on July 28, 2026.

Ques. Where can I get the official CBSE Class 12 Biotechnology Compartment question paper?

Ans. The official question papers are published on the CBSE website, cbse.gov.in. You can also download the official PDF from the table above.

CBSE Class 12 Biotechnology Compartment Set 4 - (99/7) Question Paper 2026 PDF

CBSE Class 12 Biotechnology Compartment Set 4 - (99/7) Question Paper 2026 PDF

CBSE Class 12 Biotechnology Compartment 2026 Set 4 - (99/7) Exam Pattern and Marking Scheme

CBSE Class 12 Biotechnology Compartment 2026 Set 4 - (99/7) Question Paper FAQs

1.
What does the term 'fed' in fed-batch culture refer to?

2.
Draw labelled graphical representations of Batch and continuous culture systems.

3.
If a researcher starts with three double stranded DNA molecules, how many such molecules will be produced after 10 PCR cycles? Explain briefly.

4.
Write the significance of using a turbidostat and a chemostat in continuous culture system.

5.
State the principle of mass spectrometry. Describe the procedure of Matrix Assisted Laser Desorption Ionisation (MALDI), explaining the significance of the matrix in this technique.

6.
Draw labelled graphical representations of Batch and continuous culture systems.

7.
Describe the steps involved in a Polymerase Chain Reaction (PCR) technique.

8.
How are virus-free plants produced from virus-infected plants? State any two advantages of virus-free plants.

9.
Explain the steps involved in the development of Golden Rice through genetic engineering and mention its advantages in providing nutrition. How was Golden Rice further engineered?

10.
Write the significance of using a turbidostat and a chemostat in continuous culture system.

11.
Why do cereals and legumes have limited nutritional quality? Describe two genetic engineering approaches used to improve protein quality in seeds.

12.
Elaborate on the production of artificial seed and illustrate its structure with a well-labelled diagram.

13.
What is the full form of RFLP? State its basic principle and mention any two important applications.

14.
What does the term 'fed' in fed-batch culture refer to?

15.
How can you differentiate between cancerous and non-cancerous cells in culture by microscopic examination? Give one example of each of such cell types.

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CBSE Class 12 Biotechnology Compartment Set 4 - (99/7) Question Paper 2026 PDF

CBSE Class 12 Biotechnology Compartment 2026 Set 4 - (99/7) Exam Pattern and Marking Scheme

CBSE Class 12 Biotechnology Compartment 2026 Set 4 - (99/7) Question Paper FAQs

1.What does the term 'fed' in fed-batch culture refer to?

2.Draw labelled graphical representations of Batch and continuous culture systems.

3.If a researcher starts with three double stranded DNA molecules, how many such molecules will be produced after 10 PCR cycles? Explain briefly.

4.Write the significance of using a turbidostat and a chemostat in continuous culture system.

5.State the principle of mass spectrometry. Describe the procedure of Matrix Assisted Laser Desorption Ionisation (MALDI), explaining the significance of the matrix in this technique.

6.Draw labelled graphical representations of Batch and continuous culture systems.

7.Describe the steps involved in a Polymerase Chain Reaction (PCR) technique.

8.How are virus-free plants produced from virus-infected plants? State any two advantages of virus-free plants.

9.Explain the steps involved in the development of Golden Rice through genetic engineering and mention its advantages in providing nutrition. How was Golden Rice further engineered?

10.Write the significance of using a turbidostat and a chemostat in continuous culture system.

11.Why do cereals and legumes have limited nutritional quality? Describe two genetic engineering approaches used to improve protein quality in seeds.

12.Elaborate on the production of artificial seed and illustrate its structure with a well-labelled diagram.

13.What is the full form of RFLP? State its basic principle and mention any two important applications.

14.What does the term 'fed' in fed-batch culture refer to?

15.How can you differentiate between cancerous and non-cancerous cells in culture by microscopic examination? Give one example of each of such cell types.

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1.
What does the term 'fed' in fed-batch culture refer to?

2.
Draw labelled graphical representations of Batch and continuous culture systems.

3.
If a researcher starts with three double stranded DNA molecules, how many such molecules will be produced after 10 PCR cycles? Explain briefly.

4.
Write the significance of using a turbidostat and a chemostat in continuous culture system.

5.
State the principle of mass spectrometry. Describe the procedure of Matrix Assisted Laser Desorption Ionisation (MALDI), explaining the significance of the matrix in this technique.

6.
Draw labelled graphical representations of Batch and continuous culture systems.

7.
Describe the steps involved in a Polymerase Chain Reaction (PCR) technique.

8.
How are virus-free plants produced from virus-infected plants? State any two advantages of virus-free plants.

9.
Explain the steps involved in the development of Golden Rice through genetic engineering and mention its advantages in providing nutrition. How was Golden Rice further engineered?

10.
Write the significance of using a turbidostat and a chemostat in continuous culture system.

11.
Why do cereals and legumes have limited nutritional quality? Describe two genetic engineering approaches used to improve protein quality in seeds.

12.
Elaborate on the production of artificial seed and illustrate its structure with a well-labelled diagram.

13.
What is the full form of RFLP? State its basic principle and mention any two important applications.

14.
What does the term 'fed' in fed-batch culture refer to?

15.
How can you differentiate between cancerous and non-cancerous cells in culture by microscopic examination? Give one example of each of such cell types.