Acme Ai
A
अ
GS Paper IUPSC Prelims 2021
Geomorphology
Question No. 96Interactive Test Mode
00:00
+2-0.66

Q96. The black cotton soil of India has been formed due to the weathering of:

The black cotton soil of India has been formed due to the weathering of:

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 2021 • Geography

Correct Answer: Option (B) — Fissure volcanic rock

Concept & Option Breakdown

Standard Reference Verified

Black cotton soil (Regur soil) was formed by the weathering and denudation of basaltic lava rocks erupted through fissure volcanic eruptions during the Cretaceous period (Deccan Traps).

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 2021 (Q96)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicGeography → Geomorphology
Official Answer KeyOption (B) — Fissure volcanic rock

More PYQs from Geography (Geomorphology)

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

View All Geography PYQs
2024 • Q93Geomorphology

Consider the following statements: Statement-I: Rainfall is one of the reasons for the weathering of rocks. Statement-II: Rain water contains carbon d

GeographyPractice
2024 • Q94Geomorphology

Consider the following : 1. Pyroclastic debris 2. Ash and dust 3. Nitrogen compounds 4. Sulphur compounds How many of the above are products of volcan

GeographyPractice
2023 • Q95Geomorphology

Consider the following statements : 1. In a seismograph, P waves are recorded earlier than S waves. 2. In P waves, the individual particles vibrate to

GeographyPractice
2014 • Q97Geomorphology

Which of the following phenomena might have influenced the evolution of organisms? 1. Continental drift 2. Glacial cycles Select the correct answer us

GeographyPractice
2014 • Q98Geomorphology

In India, the problem of soil erosion is associated with which of the following? 1. Terrace cultivation 2. Deforestation 3. Tropical climate Select th

GeographyPractice
2013 • Q99Geomorphology

Which of the following statements regarding laterite soils of India are correct ? 1. They are generally red in colour. 2. They are rich in nitrogen an

GeographyPractice
2013 • Q100Geomorphology

Consider the following statements: 1. Natural gas occurs in the Gondwana beds. 2. Mica occurs in abundance in Kodarma. 3. Dharwars are famous for petr

GeographyPractice
2013 • Q101Geomorphology

Consider the following: 1. Electromagnetic radiation 2. Geothermal energy 3. Gravitational force 4. Plate movements 5. Rotation of the earth 6. Revolu

GeographyPractice

Frequently Asked Questions — UPSC Prelims 2021 Q96

What is the official answer for UPSC Prelims 2021 GS Paper I Question 96 (Geography)?

The official UPSC answer key for this 2021 Geography (Geomorphology) question is Option (B): "Fissure volcanic rock". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2021 question belong to?

This question belongs to GS Paper I under the subject "Geography" and micro-topic "Geomorphology". You can explore all repeated questions from Geomorphology 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 Geomorphology UPSC Prelims question using option elimination?

To solve Geomorphology 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 QuestionWhat is blue carbon?
Next QuestionConsider the following statements in respect of the ICC World Test Championship: 1. The finalists were decided by the number of matches they won. 2. New Zealand was ranked ahead of England because it won more matches than England. Which of the above statements is/are correct?