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CBSE Class 12 Biotechnology — Practice Quiz

CBSE Class 12 Biotechnology practice quiz, chapter by chapter — 1008 practice questions across 13 chapters. Follows the CBSE syllabus.

How to use this page

Each chapter below has a practice quiz with answers and explanations. Attempt it without notes, then read why each answer is right.

Chapter-wise Practice Quiz — 13 Chapters

multiple choice1 marks

Which scientists discovered plasmids in 1952?

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Which structure of DNA was proposed in 1953?

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Which enzyme acts as scissors to cut molecules of DNA?

multiple choice1 marks

What is an episome?

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Which plasmid category provides drug resistance by encoding enzymes that deactivate antibiotics?

multiple choice1 marks

Which plasmid category produces colicins that kill other bacteria?

3

Gene Cloning

72 questions
multiple choice1 marks

What is the role of reverse transcriptase in cDNA preparation?

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Which molecule is used to break the peptidoglycan of bacterial cell walls during DNA isolation?

multiple choice1 marks

Which detergent is used for bacterial cell lysis by disrupting the lipid bilayer?

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Frequently Asked Questions

Where can I find CBSE Class 12 Biotechnology Practice Quiz?

This page has practice quiz for 13 chapters of CBSE Class 12 Biotechnology for the board exams 2027. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Attempt a chapter quiz without notes, then read the explanation for every question you got wrong. Retake it after a few days to check the ideas have stuck.

Browse Practice Quiz by Chapter

13 chapters

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