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West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Biology Set 01 (Foundation Level) English Medium 100% Free Practice Test

West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Biology: Biotechnology and its Applications Online Test (Set 01 (Foundation Level))

Biotechnology and its Applications — Set 01 (Foundation Level)

Practise free online CBT mock test for West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Biology Chapter 10 'Biotechnology and its Applications'. 20 MCQs, 20-minute timer, instant scorecard, and step-by-step solutions aligned with official 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 WBCHSE HS Syllabus Pattern

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 and its Applications

Class 12 Study Guide

Mastering Biotechnology and its Applications 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 and its Applications. 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 and its Applications 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
What are Restriction Endonucleases and why are they called 'Molecular Scissors' in genetic engineering?
রিকম্বিন্যান্ট ডিএনএ প্রযুক্তিতে রেস্ট্রিকশন এন্ডোনিউক্লিয়েজ (Restriction Endonucleases) উৎসেচককে 'আণবিক কাঁচি' বলা হয় কেন?
रेस्ट्रिक्शन एंडोन्यूक्लिअस क्या हैं और जेनेटिक इंजीनियरिंग में उन्हें 'आणविक कैंची' क्यों कहा जाता है?
A
They join DNA fragmentsডিএনএ জোড়া লাগায়वे डीएनए के टुकड़ों को जोड़ते हैं
B
They cut double-stranded DNA at SPECIFIC PALINDROMIC NUCLEOTIDE SEQUENCES (e.g., EcoRI cuts at 5'-GAATTC-3' between G and A, generating sticky ends)তারা দ্বিতন্ত্রী ডিএনএ-কে সুনির্দিষ্ট প্যালিনড্রোমিক ক্ষার অনুক্রমে কাটে (যেমন EcoRI উৎসেচক ৫'-GAATTC-৩' সিকোয়েন্সের G ও A-এর মাঝে কাটে)वे विशिष्ट पैलिंड्रोमिक न्यूक्लियोटाइड अनुक्रमों में डबल-स्ट्रैंडेड डीएनए को काटते हैं (उदाहरण के लिए, इकोआरआई जी और ए के बीच 5'-GAATTC-3' पर कटौती करता है, जिससे चिपचिपा सिरा उत्पन्न होता है)
C
They replicate RNAআরএনএ তৈরি করেवे आरएनए की नकल करते हैं
D
They degrade proteinsপ্রোটিন ভেঙে ফেলেवे प्रोटीन का क्षरण करते हैं
Correct Answer: Option B
Explanation:
Restriction endonucleases recognize specific 4-8 bp palindromic sequences (e.g., EcoRI recognizes 5'-GAATTC-3') and cleave phosphodiester backbones, generating overhangs (sticky ends) for recombinant DNA construction.
নির্দিষ্ট স্থানে ডিএনএ ফিতা কাটার ক্ষমতার জন্যই এদের আণবিক কাঁচি বা মলিকুলার সিজার বলে।
प्रतिबंध एंडोन्यूक्लाइजेस विशिष्ट 4-8 बीपी पैलिंड्रोमिक अनुक्रमों को पहचानते हैं (उदाहरण के लिए, इकोआरआई 5'-GAATTC-3' को पहचानते हैं) और फॉस्फोडिएस्टर बैकबोन को साफ करते हैं, जिससे पुनः संयोजक डीएनए निर्माण के लिए ओवरहैंग (चिपचिपे सिरे) उत्पन्न होते हैं।
Q2
What is Gel Electrophoresis used for in recombinant DNA technology?
রিকম্বিন্যান্ট ডিএনএ প্রযুক্তিতে জেল ইলেক্ট্রোফোরেসিস (Gel Electrophoresis) পদ্ধতিটি কী কাজে ব্যবহৃত হয়?
पुनः संयोजक डीएनए प्रौद्योगिकी में जेल इलेक्ट्रोफोरेसिस का उपयोग किस लिए किया जाता है?
A
Cutting DNAডিএনএ কাটাडीएनए काटना
B
Joining DNAডিএনএ জোড়া লাগানোडीएनए से जुड़ना
C
Culturing bacteriaব্যাকটিরিয়া পালনबैक्टीरिया का संवर्धन
D
SEPARATION OF DNA FRAGMENTS ACCORDING TO THEIR SIZE under an electric field through an Agarose gel matrix (negatively charged DNA moves towards positive ANODE; smaller fragments travel faster and farther)বৈদ্যুতিক ক্ষেত্রের প্রভাবে অ্যাগারোজ জেলের মাধ্যমে আকারের ভিত্তিতে ঋণাত্মক ডিএনএ খণ্ডকগুলিকে পৃথক করা (ক্ষুদ্র খণ্ডক দ্রুত অ্যানোডের দিকে যায়)एगरोज़ जेल मैट्रिक्स के माध्यम से एक विद्युत क्षेत्र के तहत डीएनए के टुकड़ों को उनके आकार के अनुसार अलग करना (नकारात्मक रूप से चार्ज किया गया डीएनए सकारात्मक एनोड की ओर बढ़ता है; छोटे टुकड़े तेजी से और दूर तक यात्रा करते हैं)
Correct Answer: Option D
Explanation:
Agarose gel electrophoresis separates negatively charged DNA fragments toward the anode (+) based on molecular sieving: smaller fragments migrate faster. Bands are stained with Ethidium Bromide and viewed under UV light (bright orange bands).
ডিএনএ অণু ঋণাত্মক হওয়ায় বিদ্যুৎ দিলে ধনাত্মক অ্যানোডের দিকে ছোটে এবং জেল ছাঁকনিতে ছোট টুকরোগুলি অনেক দূরে আলাদা হয়ে যায়।
एगरोज़ जेल वैद्युतकणसंचलन आणविक छनाई के आधार पर नकारात्मक रूप से चार्ज किए गए डीएनए टुकड़ों को एनोड (+) की ओर अलग करता है: छोटे टुकड़े तेजी से पलायन करते हैं। बैंड को एथिडियम ब्रोमाइड से रंगा जाता है और यूवी प्रकाश (चमकीले नारंगी बैंड) के तहत देखा जाता है।

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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.

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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 West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Biology is 100% free to attempt. Students can test their preparation without any subscription or payment.
This test strictly follows the official West Bengal Council of Higher Secondary Education (WBCHSE) syllabus and curriculum for Class 12 (Higher Secondary), covering textbook concepts, formulas, and board-standard MCQs for Chapter 10.
This dedicated test page is conducted in English Medium. If you prefer taking the test in Bengali or Hindi, you can switch using the language switcher bar at the top or toggle languages during the exam.
The test comprises 20 MCQs to be completed in 20 minutes. Each question carries +1.0 mark for a correct response, and there is 0.0 negative marking for incorrect or unattempted questions.
Yes! Instantly after submitting your test, you receive a comprehensive digital scorecard with accuracy analysis, time breakdown, and step-by-step verified explanations for all 20 questions.

Practice Sets in this Chapter

Set 01 (Foundation)

20 MCQs • 20 Mins
Current

Set 02 (Advanced)

20 MCQs • 20 Mins
View

More Chapters in this Subject

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Biotechnology and its Applications (Set 01 (Foundation Level))
20 MCQs • 20 Mins • 100% Free Practice Test

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