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Delhi Board of School Education Class XI Geography Set 02 (Advanced Level) English Medium 100% Free Practice Test

Delhi Board of School Education Class XI Geography: Interior of the Earth Online Test (Set 02 (Advanced Level)) | TargetExams

Interior of the Earth — Set 02 (Advanced Level)

Take free online mock test for Delhi Board of School Education Class XI Geography chapter 'Interior of the Earth'. 20 MCQs, 20 minutes, detailed solutions & score analysis.

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20 MCQs

Questions

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20 Mins

Duration

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20 Marks

Total Marks

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+1.0

Per Correct

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0.0

Negative Mark

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English

Language

Start Test Now (English Medium)

Instant Scorecard Step-by-Step Solutions DBSE 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: Interior of the Earth

Class 11 Study Guide

Mastering Interior of the Earth in Class 11 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 Interior of the Earth.	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 Interior of the Earth 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.

Why does seismic P-wave velocity experience a dramatic sharp drop from approximately 13.7 km/s to 8.0 km/s at the Gutenberg Discontinuity (2,900 km depth)?

गुटेनबर्ग असंबद्धता (2,900 किमी गहराई) पर भूकंपीय पी-तरंगों की गति लगभग 13.7 किमी/सेकंड से तेजी से गिरकर 8.0 किमी/सेकंड क्यों हो जाती है?

Because material transitions abruptly from high-rigidity solid silicate peridotite in the lower mantle to low-rigidity liquid iron-nickel alloy in the outer core (bulk shear modulus plummets to zero)क्योंकि पदार्थ निचले मेंटल के उच्च-दृढ़ता वाले ठोस सिलिकेट पेरिडोटाइट से बाह्य क्रोड के शून्य-अपरूपण दृढ़ता वाले तरल लोहा-निकल मिश्रधातु में अचानक परिवर्तित होता है

Because atmospheric air pockets exist at 2,900 km depth that absorb acoustic kinetic energyक्योंकि 2,900 किमी की गहराई पर वायुमंडलीय हवा की जेबें मौजूद हैं जो ध्वनिक ऊर्जा को सोख लेती हैं

Because the magnetic polarity of the Earth permanently flips horizontally at that exact boundaryक्योंकि पृथ्वी की चुंबकीय ध्रुवता उस सटीक सीमा पर क्षैतिज रूप से स्थायी रूप से पलट जाती है

Because radioactive decay in the core converts seismic waves into electromagnetic gamma raysक्योंकि क्रोड में रेडियोधर्मी क्षय भूकंपीय तरंगों को विद्युत चुम्बकीय गामा किरणों में बदल देता है

Correct Answer: Option A

Explanation:

The velocity of P-waves depends on both bulk modulus (K) and shear modulus (μ). When transitioning from solid mantle to liquid outer core, the shear modulus μ plummets to zero, causing P-wave velocity to collapse from ~13.7 km/s to ~8.1 km/s.

पी-तरंगों का वेग माध्यम की प्रत्यास्थता और अपरूपण दृढ़ता (Shear Modulus) पर निर्भर करता है। ठोस मेंटल से तरल बाह्य क्रोड में प्रवेश करते ही अपरूपण मापांक शून्य हो जाता है, जिससे पी-तरंगों का वेग अचानक 13.7 से घटकर 8 किमी/सेकंड रह जाता है।

What is the physical mechanism responsible for generating the P-wave shadow zone specifically between 105° and 145° from an earthquake epicentre?

भूकंप अधिकेंद्र से विशेष रूप से 105° और 145° के बीच पी-तरंग छाया क्षेत्र उत्पन्न करने के लिए कौन सा भौतिक तंत्र उत्तरदायी है?

Snell's Law refraction: the steep drop in wave velocity upon entering the molten outer core strongly bends P-waves inward towards the planetary center, leaving a geometric deflection gapस्नेल के नियम के अनुसार अपवर्तन: तरल बाह्य क्रोड में प्रवेश करने पर तरंग वेग में भारी गिरावट पी-तरंगों को पृथ्वी के केंद्र की ओर अत्यधिक झुका देती है, जिससे 105° और 145° के बीच एक अपवर्तित ज्यामितीय अंतराल बन जाता है

Total internal reflection that traps all P-waves permanently inside the asthenosphereपूर्ण आंतरिक परावर्तन जो सभी पी-तरंगों को स्थलमंडल के भीतर स्थायी रूप से फंसा देता है

Destructive phase interference with reflected Love waves across continental shieldsमहाद्वीपीय ढालों पर परावर्तित लव तरंगों के साथ विनाशी व्यतिकरण

Complete absorption of seismic energy by thick subducted oceanic sedimentsप्रविष्ट महासागरीय तलछटों द्वारा भूकंपीय ऊर्जा का पूर्ण अवशोषण

Correct Answer: Option A

Explanation:

Because P-wave velocity drops as waves enter the liquid outer core, ray paths refract sharply towards the normal (inward). This severe deflection prevents any direct rays from emerging between 105° and 145°.

जब पी-तरंगें तरल बाह्य क्रोड में प्रवेश करती हैं, तो गति कम होने के कारण वे अभिलंब की ओर अत्यधिक झुक (अपवर्तित हो) जाती हैं। इस तेज विचलन के कारण 105° से 145° के बीच की सतह पर कोई सीधी पी-तरंग नहीं पहुंच पाती।

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.

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 Delhi Board of School Education Class XI Geography 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.

Interior of the Earth (Set 02 (Advanced Level))

20 MCQs • 20 Mins • 100% Free Practice Test

Delhi Board of School Education Class XI Geography: Interior of the Earth Online Test (Set 02 (Advanced Level)) | TargetExams

Chapter Study Guide & In-Depth Notes

Chapter Overview & Core Concepts: Interior of the Earth