Acme Ai
A
अ
GS Paper IUPSC Prelims 2001
Physical Geography
Question No. 106Interactive Test Mode
00:00
+2-0.66

Q106. Who amongst the following was the first to state that the earth was spherical?

Who amongst the following was the first to state that the earth was spherical?

Select the correct option below (or cross out options to eliminate)
PrevNext Question

Official Answer Key & Detailed Solution

3D PYQ Realm

Ready to check the official UPSC Answer Key?

Click any option above to test yourself under exam conditions, or reveal the explanation directly.

Official UPSC Answer KeyUPSC Prelims 2001 • Geography

Correct Answer: Option (A) — Aristotle

Concept & Option Breakdown

Standard Reference Verified

Aristotle (in his work 'De Caelo' / 'On the Heavens') was among the earliest Greek philosophers to provide empirical observational evidence that the Earth is spherical, citing the circular shadow cast during lunar eclipses and the shift in star visibility when traveling north or south.

Reviewed by Avinash Sir & Acme AI Research Team

Practice Full-Length & Sectional Prelims Mocks on this Interface

50 simulated tests in the APT Prelims Test Series (₹1,493) or 1-on-1 Mentorship with Avinash Sir.

1-on-1 MentorshipOpen Test Platform

Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2001 (Q106)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicGeography → Physical Geography
Official Answer KeyOption (A) — Aristotle

More PYQs from Geography (Physical Geography)

Master the Geography syllabus cluster by practicing these related previous year questions.

View All Geography PYQs
2009 • Q102Physical Geography

In the structure of planet Earth, below the mantle, the core is mainly made up of which one of the following?

GeographyPractice
2007 • Q448Physical Geography

Which one of the following cities does not have the same clock time as that of the other three cities at any given instant ?

GeographyPractice
2007 • Q450Physical Geography

Which one among the following rivers is the longest ?

GeographyPractice
2007 • Q451Physical Geography

The largest coral reef in the world is found near the coast of which one of the following countries?

GeographyPractice
2005 • Q103Physical Geography

Consider the following statements : 1. The axis of the earth’s magnetic field is inclined at 23 and half to the geographic axis of the earth. 2. The e

GeographyPractice
2005 • Q104Physical Geography

Consider the following statements: 1. Total land area of earth is approximately 1475 lakh square kilometers. 2. Ratio of land area to water area of ea

GeographyPractice
2001 • Q107Physical Geography

Consider the following statements made about sedimentary rocks: 1. Sedimentary rocks are formed at earth’s surface by the hydrological system 2. Forma

GeographyPractice
2001 • Q108Physical Geography

Volcanic eruptions do not occur in :

GeographyPractice

Frequently Asked Questions — UPSC Prelims 2001 Q106

What is the official answer for UPSC Prelims 2001 GS Paper I Question 106 (Geography)?

The official UPSC answer key for this 2001 Geography (Physical Geography) question is Option (A): "Aristotle". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2001 question belong to?

This question belongs to GS Paper I under the subject "Geography" and micro-topic "Physical Geography". You can explore all repeated questions from Physical Geography in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Physical Geography UPSC Prelims question using option elimination?

To solve Physical Geography questions in UPSC Prelims, identify extreme modifiers, verify core NCERT conceptual definitions, and eliminate mutually contradictory statement pairs before locking your final option.

Beyond Previous Year Questions

Structured Prelims Practice & Mentorship

Pair previous year question analysis with full-length simulated mock tests and 1-on-1 faculty guidance.

APT 2027 • 50 Prelims Tests17% OFF

Acme Prelims Test Series (APT)

Built to eliminate 1/3rd negative marking losses and 50–50 option traps through structured simulation and NCERT-backed keys.

  • 50 High-Yield Tests: Subject Sectionals, Current Affairs, CSAT Paper II & Full-Length Simulators
  • 1/3rd Penalty & Trap Analytics: Identify whether marks are lost to over-attempting or conceptual gaps
  • Option-by-Option NCERT Keys: Detailed distractor analysis and elimination logic for every question
  • Custom PDF-to-Mock Generator: Convert your revision notes or current affairs PDFs into practice tests
Complete 50-Test Package
₹1,493₹1,799• Valid till Prelims 2027
Explore APT Test SeriesTry Free Mock
1-on-1 Personal MentorshipCapped at 10 Seats

1-on-1 UPSC Mentorship with Avinash Sir

Weekly 1-on-1 strategy reviews, daily study accountability, and personalized MCQ attempt audits with an experienced UPSC mentor.

  • Weekly 1-on-1 Sessions: Direct mentorship with Avinash Sir (Former Plutus IAS Mentor, UPSC & UPPCS Mains Written)
  • APT 50-Test Series Included: Full Prelims GS1 & CSAT test series bundled at no additional cost
  • Mock Attempt & Elimination Audit: Question-by-question review to calibrate your risk and attempt accuracy
  • Prelims & Integrated Tracks: Available as dedicated Prelims mentorship or end-to-end Prelims + Mains guidance
Prelims & Integrated Tracks
17% OFF• Includes APT 50-Test Series
Explore 1-on-1 MentorshipCompare Tracks
Previous QuestionMatch List-I with List-II and select the correct answer using the codes given below the lists: | List–I (Amendments to the Constitution) | List–II | | :--- | :--- | | A. The Constitution (Sixty-ninth Amendment) Act, 1991 | 1. Establishment of state level Rent Tribunals | | B. The Constitution (Seventy-fifth Amendment) Act, 1994 | 2. No reservations for Scheduled Castes in Panchayats in Arunachal Pradesh | | C. The Constitution (Eightieth Amendment) Act, 2000 | 3. Constitution of Panchayats in Villages or at other local level | | D. The Constitution (Eighty-third Amendment) Act, 2000 | 4. Accepting the recommendations of the Tenth Finance Commission | | | 5. According the status of National Capital Territory to Delhi |
Next QuestionConsider the following statements made about sedimentary rocks: 1. Sedimentary rocks are formed at earth’s surface by the hydrological system 2. Formation of sedimentary rocks involves the weathering of pre-existing rocks 3. Sedimentary rocks contain fossils 4. Sedimentary rocks typically occur in layers Which of these statements are correct?