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Jharkhand Academic Council (JAC) Class XII Biology Set 02 (Advanced Level) English Medium 100% Free Practice Test

JAC Board Class 12 Biology: Biotechnology: Principles and Processes Online Test (Set 02 (Advanced Level)) | Jharkhand Board

Biotechnology: Principles and Processes — Set 02 (Advanced Level)

Practise free online MCQ mock test for JAC Board Class 12 Biology chapter 'Biotechnology: Principles and Processes'. 20 MCQs with timer countdown, detailed explanations, and instant results as per board syllabus.

📝
20 MCQs
Questions
⏱️
20 Mins
Duration
🎯
20 Marks
Total Marks
➕
+1.0
Per Correct
🛡️
0.0
Negative Mark
🌐
English
Language
Start Test Now (English Medium)
Instant Scorecard Step-by-Step Solutions JCERT / JAC Curriculum

Chapter Study Guide & In-Depth Notes

Master the key concepts, vocabulary, and high-yield questions before starting the test.

3 Sections

Chapter Overview & Core Concepts: Biotechnology: Principles and Processes

Class 12 Study Guide

Mastering Biotechnology: Principles and Processes in Class 12 provides critical subject intuition, analytical skills, and examination readiness.

Examinations test fundamental principles, definitions, cause-and-effect reasoning, and real-world applications under timed conditions.

Core Moral & Key Takeaway:

Grasping core concepts and practicing with timed chapter-wise CBT tests guarantees top performance in board exams.

Key Terminology, Definitions & Principles

Glossary & Concepts
Term / Formula Type Definition / Meaning Explanation / Notes Example / Usage
Core Concept Principle Primary concept governing Biotechnology: Principles and Processes. मुख्य सिद्धांत "Understand and apply the principle accurately."
Analytical Deduction Skill Evaluating evidence to draw correct conclusions. तार्किक विश्लेषण "Examine question clues systematically."

Key Features & Devices Explored:

Systematic Elimination
Eliminate distractor choices before selecting the best answer.
Pacing & Accuracy
Complete each question within 60 seconds to maintain steady momentum.

High-Yield Revision Points & Solved Board Exam Q&A

Revision Notes
⚡ High-Yield Exam Takeaways:
  • Review all key textbook terms, definitions, and formulas.
  • Pay attention to units, boundary values, and key keywords in questions.
  • Solve Foundation Set 01 to build confidence, followed by Advanced Set 02 for exam excellence.
Frequently Asked Questions & Model Answers:
Q1 How should students prepare for Biotechnology: Principles and Processes exams?
Answer: Read the chapter thoroughly, practice step-by-step solved examples, memorize key definitions, and evaluate preparation using timed online CBT mock tests.

Sample Questions Preview

Free Sneak Peek

Here is a sneak peek of the questions included in this test set. Test your preparation by viewing the answer and detailed explanation before starting the timed exam.

Q1
In recombinant plasmid pBR322, if a foreign gene of interest is inserted into the *BamHI* recognition site located within the Tetracycline resistance gene (tet^R), what phenotype will the recombinant *E. coli* transformants exhibit?
यदि pBR322 में विदेशी जीन को tet^R जीन के *BamHI* स्थल पर जोड़ा जाए, तो पुनर्योगज जीवाणु का क्या लक्षण होगा?
A
They will die on both antibioticsवे दोनों एंटीबायोटिक्स लेने पर मर जायेंगे
B
They will grow on Tetracycline but die on Ampicillinवे टेट्रासाइक्लिन पर बढ़ेंगे लेकिन एम्पीसिलीन पर मर जाएंगे
C
They will grow on both Ampicillin and Tetracyclineवे एम्पीसिलीन और टेट्रासाइक्लिन दोनों पर विकसित होंगे
D
They will grow on Ampicillin agar plates (retain amp^R) but will DIE on Tetracycline agar plates (due to insertional inactivation of tet^R)वे एम्पीसिलीन प्लेट पर जीवित रहेंगे (amp^R), परंतु टेट्रासाइक्लिन प्लेट पर मर जाएंगे (tet^S)
Correct Answer: Option D
Explanation:
Ligating into *BamHI* site disrupts the reading frame of tet^R (Insertional Inactivation). Transformants grow on ampicillin (amp^R), but replica plating on tetracycline fails because they are now tetracycline sensitive (tet^S).
tet^R का निवेशन निष्क्रियीकरण होने से वे टेट्रासाइक्लिन संवेदी बन जाते हैं।
Q2
What is the function of the Primers in a Polymerase Chain Reaction (PCR)?
PCR में प्राइमर (Primers) की क्या भूमिका होती है?
A
Short chemically synthesized oligonucleotides (15--25 nucleotides) complementary to the 3'-ends of target DNA flanking regions, providing free 3'-OH groups for DNA polymerase extensionछोटे संश्लेषित ओलिगोन्यूक्लियोटाइड जो DNA पॉलीमरेज को 3'-OH सिरा प्रदान करते हैं
B
Enzymes that break hydrogen bondsएंजाइम जो हाइड्रोजन बांड को तोड़ते हैं
C
Buffers that maintain neutral pHबफ़र्स जो तटस्थ पीएच बनाए रखते हैं
D
Dyes that color the DNA yellowवे रंग जो डीएनए को पीला रंग देते हैं
Correct Answer: Option A
Explanation:
DNA polymerases cannot initiate synthesis de novo; they require pre-existing paired primer with free 3'-OH terminus to extend complementary strand. Two primers (forward and reverse) flank the target gene.
प्राइमर DNA संश्लेषण हेतु 3'-OH प्रारंभन सिरा देते हैं।

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How Chapter-Wise Online CBT Tests Build Winning Habits for Future Competitive Exams

Focused chapter-wise CBT practice builds the speed, mental stamina, and analytical discipline required to ace CUET, JEE Main, NEET UG, NDA, CA Foundation, and College Entrance Exams.

Competitive Edge

Real-Time Clock Awareness & Pacing

समय प्रबंधन एवं गति नियंत्रण

In school examinations, students write answers without active pacing. In national entrance tests, students have barely 45-60 seconds per MCQ. Practicing with a 20-minute timer instills instinctive time-budgeting and prevents last-minute exam panic.

Mastery of the Elimination Technique

विकल्प निष्कासन विधि में दक्षता

Top rankers in competitive exams rarely compute every problem blindly. They spot subtle traps, evaluate extreme values, and eliminate 2 out of 4 distractors within seconds. Our 4-option sets teach critical distractor analysis.

CBT Screen Stamina & Digital Comfort

कंप्यूटर आधारित परीक्षा का सहज अभ्यास

Almost all major national exams (CUET, JEE, NEET, SSC, Banking) are 100% computer-based. Students who only study on paper experience eye strain and navigation mistakes on exam day. Early CBT practice creates effortless digital fluency.

Immunity to Negative Marking

सटीकता और नकारात्मक अंकन से सुरक्षा

Careless errors—such as misreading "NOT" or "EXCEPT"—ruin thousands of competitive aspirations each year. Regular objective testing builds the habit of double-checking question keywords before locking answers.

Instant Diagnostic Feedback Loop

तत्काल त्रुटि निवारण एवं आत्म-मूल्यांकन

Traditional paper tests take weeks to grade, by which time the student has forgotten their thought process. TargetExams provides instant scorecards and step-by-step solutions while the conceptual puzzle is still fresh.

Start Building Your Competitive Edge from Class

Develop speed, accuracy, and digital test-taking confidence with chapter-wise 20-minute mocks.

Syllabus Concepts Evaluated in this Chapter

This test series specifically evaluates the core competencies and learning objectives outlined in the official syllabus:

  • Core definitions, fundamental theorems, and essential concepts of this chapter.
  • Step-by-step mathematical reasoning and deductive problem-solving.
  • Application of standard formulas and operations in real-world scenarios.
  • Critical examination of common exam pitfalls and misleading options.
  • Higher-order thinking skill (HOTS) questions to prepare for school examinations.
  • Speed and accuracy mastery under standard timed CBT exam conditions.

Exam Rules & Test Taking Guidelines

  • Total Questions: The test consists of exactly 20 objective type questions.
  • Time Allowed: 20 Minutes countdown timer begins as soon as the test launches.
  • Marking Scheme: +1.0 mark is awarded for each correct answer.
  • Zero Penalty: There is 0.0 negative marking for incorrect or unattempted questions.
  • Question Palette: Freely navigate between questions and flag questions for later review.
  • Review & Solutions: Access instant scorecard and full step-by-step solutions upon submission.

Frequently Asked Questions (FAQs)

Yes! Foundation Practice Set 01 for every chapter in Jharkhand Academic Council (JAC) Class XII Biology is 100% free to attempt. Students can test their knowledge without any payment or hidden fees.
This page is dedicated to English Medium. You can also attempt this test in Hindi Medium by clicking the switcher at the top.
Absolutely. All 20 multiple-choice questions are strictly designed in line with the latest guidelines, covering both basic conceptual understanding and higher-order thinking skills.
The test contains 20 MCQs to be solved in 20 minutes. Each question carries +1.0 mark for a correct answer, and there is zero (0.0) negative marking for incorrect answers.
Yes. Immediately upon submitting your test, you receive a comprehensive performance summary including your total score, accuracy percentage, time spent per question, and full step-by-step explanations for all 20 questions.

Practice Sets in this Chapter

Set 01 (Foundation)

20 MCQs • 20 Mins
View

Set 02 (Advanced)

20 MCQs • 20 Mins
Current

More Chapters in this Subject

🎯 Start Preparation

Begin with this 20-minute practice set to test your conceptual accuracy and prepare for top ranks in your school examinations.

Biotechnology: Principles and Processes (Set 02 (Advanced Level))
20 MCQs • 20 Mins • 100% Free Practice Test

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