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West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Chemistry Set 02 (Advanced Level) English Medium 100% Free Practice Test

West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Chemistry: Haloalkanes and Haloarenes Online Test (Set 02 (Advanced Level))

Haloalkanes and Haloarenes — Set 02 (Advanced Level)

Practise free online CBT mock test for West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Chemistry Chapter 3 'Haloalkanes and Haloarenes'. 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
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+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: Haloalkanes and Haloarenes

Class 12 Study Guide

Mastering Haloalkanes and Haloarenes 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 Haloalkanes and Haloarenes. 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 Haloalkanes and Haloarenes 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
Why is the dipole moment of Chlorobenzene (μ = 1.69 D) LOWER than that of Cyclohexyl chloride (μ = 1.86 D)?
সাইক্লোহেক্সাইল ক্লোরাইডের (μ = 1.86 D) তুলনায় ক্লোরোবেনজিনের (μ = 1.69 D) দ্বিমেরু ভ্রামক কম কেন?
क्लोरोबेंजीन (μ = 1.69 D) का द्विध्रुव आघूर्ण साइक्लोहेक्सिल क्लोराइड (μ = 1.86 D) से कम क्यों है?
A
Chlorobenzene is completely non-polarক্লোরোবেনজিন সম্পূর্ণ অধ্রুবীয়क्लोरोबेंजीन पूर्णतः गैर-ध्रुवीय है
B
Cyclohexyl chloride has double bondsসাইক্লোহেক্সাইল ক্লোরাইডে দ্বিবন্ধন থাকেसाइक्लोहेक्सिल क्लोराइड में दोहरे बंधन होते हैं
C
In chlorobenzene, the C-Cl bond is attached to an sp^2 carbon (more electronegative, drawing electrons towards ring) and resonance opposes the C-Cl dipoleক্লোরোবেনজিনে কার্বনটি sp^2 সংকরিত (অধিক তড়িৎঋণাত্মক) এবং রেজোন্যান্স দ্বিমেরু ভ্রামককে আংশিক প্রশমিত করেक्लोरोबेंजीन में, सी-सीएल बंधन एक एसपी² कार्बन (अधिक विद्युत ऋणात्मक, इलेक्ट्रॉनों को रिंग की ओर खींचता है) से जुड़ा होता है और अनुनाद सी-सीएल द्विध्रुव का विरोध करता है
D
Chlorine is not electronegative in benzeneবেনজিনে ক্লোরিন তড়িৎঋণাত্মক নয়बेंजीन में क्लोरीन विद्युत ऋणात्मक नहीं है
Correct Answer: Option C
Explanation:
sp^2 carbon in chlorobenzene has more s-character (33.3%), reducing C-Cl bond polarity. Resonance also shifts electron density into the ring opposite to the inductive effect, lowering μ.
ক্লোরোবেনজিনের sp^2 কার্বনের উচ্চ তড়িৎঋণাত্মকতা এবং রেজোন্যান্সের বিপরীতমুখী ইলেকট্রন সরণের কারণে নিট দ্বিমেরু ভ্রামক হ্রাস পায়।
क्लोरोबेंजीन में एसपी² कार्बन में अधिक एस-कैरेक्टर (33.3%) होता है, जो सी-सीएल बांड ध्रुवीयता को कम करता है। अनुनाद भी आगमनात्मक प्रभाव के विपरीत इलेक्ट्रॉन घनत्व को रिंग में स्थानांतरित करता है, जिससे μ कम हो जाता है।
Q2
Why does p-Dichlorobenzene have a substantially HIGHER Melting Point and lower solubility than its ortho and meta isomers?
অর্থো ও মেটা সমাবয়বের তুলনায় প্যারা-ডাইক্লোরোবেনজিনের গলনাঙ্ক উল্লেখযোগ্যভাবে বেশি এবং দ্রাব্যতা কম কেন?
पी-डाइक्लोरोबेंजीन का गलनांक इसके ऑर्थो और मेटा आइसोमर्स की तुलना में काफी अधिक और कम घुलनशीलता क्यों है?
A
Due to its symmetrical molecular structure, p-dichlorobenzene fits closely and compactly into the crystal lattice with strong intermolecular forcesপ্রতিসম গঠনের কারণে প্যারা-সমাবয়বটি কেলাস জালকে অত্যন্ত দৃঢ় ও সুষমভাবে সজ্জিত থাকেअपनी सममित आणविक संरचना के कारण, पी-डाइक्लोरोबेंजीन मजबूत अंतर-आण्विक बलों के साथ क्रिस्टल जाली में बारीकी से और कॉम्पैक्ट रूप से फिट बैठता है।
B
Because it has a very high dipole momentকারণ এর উচ্চ দ্বিমেরু ভ্রামক থাকেक्योंकि इसका द्विध्रुव आघूर्ण बहुत अधिक होता है
C
Because it is a liquid at room temperatureকারণ এটি সাধারণ তাপমাত্রায় তরলक्योंकि यह कमरे के तापमान पर एक तरल पदार्थ है
D
Because it forms hydrogen bonds with airকারণ এটি বায়ুর সাথে H-বন্ধন তৈরি করেक्योंकि यह हवा के साथ हाइड्रोजन बांड बनाता है
Correct Answer: Option A
Explanation:
p-Dichlorobenzene has a symmetrical linear dipole cancellation (μ = 0) that packs efficiently and tightly in the solid crystal lattice, requiring higher thermal energy to melt.
প্রতিসম গঠনের জন্য প্যারা-আইসোমার কেলাসের মধ্যে নিখুঁতভাবে আবদ্ধ থাকে, ফলে এর গলনাঙ্ক অর্থো ও মেটা অপেক্ষা অনেক বেশি হয়।
पी-डाइक्लोरोबेंजीन में एक सममित रैखिक द्विध्रुवीय रद्दीकरण (μ = 0) होता है जो ठोस क्रिस्टल जाली में कुशलतापूर्वक और कसकर पैक होता है, जिसे पिघलाने के लिए उच्च तापीय ऊर्जा की आवश्यकता होती 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

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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) Chemistry 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 3.
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
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Set 02 (Advanced)

20 MCQs • 20 Mins
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More Chapters in this Subject

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Haloalkanes and Haloarenes (Set 02 (Advanced Level))
20 MCQs • 20 Mins • 100% Free Practice Test

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