CBSE Class 12 Bio Technology Compartment Question Paper 2020

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Previous Year Question Papers for Class 12 Bio Technology

Access comprehensive previous year question papers for Class 12 Bio Technology using the CBSE Class 12 Bio Technology Compartment Question Paper 2020. Designed to align with the 2026-27 CBSE academic guidelines, these solved papers help students assess their exam readiness and understand official marking schemes.

Practice Class 12 Bio Technology Exam Papers

View or download the dedicated CBSE Class 12 Bio Technology Compartment Question Paper 2020 resource below. Engaging with these previous year papers under timed conditions ensures continuous academic progress and mastery of the 2026-27 exam format.

SECTION A
1. Why is agar added to the culture medium used for culturing microbes ?
 
2. Pectinase enzyme is needed to isolate single cells from a plant tissue. Why ?
OR
For genetic transformation vector, which two DNA sequences are cloned in the T-DNA region of Ti-plasmid in place of unwanted DNA sequences ?
 
3. Give an example of a disease caused by the absence of the enzyme adenosine deaminase.
OR
What is the cause of thalassemia ?
 
4. In recombinant DNA technology, what is an ‘insert’ ?
 
5. Which database retrieval tool carries information on taxonomic classification of an organism ?
OR
Name a single gene mutation in humans which follows Mendelian inheritance, having chromosome 7 as its genomic location.
 
6. Frozen animal cell culture should be thawed in a water-bath maintained at 370C, with moderate shaking. Why ?
 
7. What are the two limitations of the germplasm conservation through conventional methods ?
 
8. Polyethylene glycol is a
 
(A) Fusogenic chemical
 
(B) Callus stimulant
 
(C) Electrofusion stimulant
 
(D) Differentiation stimulant
 
9. Which one of the following restriction enzymes produces blunt ends in a DNA fragment ?
 
(A) Alu I
 
(B) Eco RI
 
(C) Bam HI
 
(D) Hind III
 
10. The study of full complement of proteins expressed by a genome is called
 
(A) Proteome
 
(B) Proteomics
 
(C) Genomics
 
(D) Protein analysis
 
11. Which of the following is a function of cryoprotective agents ?
 
(A) Long-term preservation of cultures
 
(B) Prevention of cell damage due to ice crystal formation
 
(C) Prevent formation of inclusion bodies
 
(D) To trap the liquid nitrogen
 
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Practice Exam Question Papers for Class 12 Bio Technology CBSE Class 12 Bio Technology Compartment Question Paper 2020

Previous Year Question Papers: Class 12 Bio Technology

Review authentic examination papers for Class 12 Bio Technology. Working through the CBSE Class 12 Bio Technology Compartment Question Paper 2020 allows learners to decode recurring question trends and familiarize themselves with official CBSE evaluation standards.

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FAQs

Where can I download the official PDF for CBSE Class 12 Bio Technology Compartment Question Paper 2020?

The CBSE Class 12 Bio Technology Compartment Question Paper 2020 is available for download on StudiesToday.com. It includes complete set with all sections so that Class 12 students can practice with the exact same paper that came in the CBSE exams.

Are the solutions for CBSE Class 12 Bio Technology Compartment Question Paper 2020 based on the official CBSE marking scheme?

Yes, the solutions for CBSE Class 12 Bio Technology Compartment Question Paper 2020 are prepared by subject matter experts as per official marking scheme. Class 12 students will understand the structure of answers and 'step-marks' methodology Bio Technology.

How does solving CBSE Class 12 Bio Technology Compartment Question Paper 2020 help in preparing for the 2026 exams?

Solving previous year papers like CBSE Class 12 Bio Technology Compartment Question Paper 2020 is important to understand repeat themes and question difficulty levels of Bio Technology. It helps Class 12 students to test their time management skills too.

Can I access CBSE Class 12 Bio Technology Compartment Question Paper 2020 in different languages?

Yes, where applicable, CBSE Class 12 Bio Technology Compartment Question Paper 2020 is available in both English and Hindi mediums. All students from Class 12 can access Bio Technology study material in their preferred language.

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No, all previous year question papers on StudiesToday, including CBSE Class 12 Bio Technology Compartment Question Paper 2020, are provided free of charge in mobile-friendly PDF.