UPSC Static Quiz – Geography : 3 April 2026 We will post 5 questions daily on static topics mentioned in the UPSC civil services preliminary examination syllabus. Each week will focus on a specific topic from the syllabus, such as History of India and Indian National Movement, Indian and World Geography, and more. We are excited to bring you our daily UPSC Static Quiz, designed to help you prepare for the UPSC Civil Services Preliminary Examination. Each day, we will post 5 questions on static topics mentioned in the UPSC syllabus. This week, we are focusing on Indian and World Geography.
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Participating in daily quizzes helps reinforce your knowledge and identify areas that need improvement. Regular practice will enhance your recall abilities and boost your confidence for the examination. By covering various topics throughout the week, you ensure a comprehensive revision of the syllabus.
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Question 1 of 5
1. Question
The James Webb Space Telescope (JWST) operates at the L2 Lagrange Point. Why is this location preferred over Low Earth Orbit (LEO)?
Correct
Solution: B
- Option B is Correct. At L2 (1.5 million km away), the orbital period matches Earth’s year. This means the Sun, Earth, and Moon are always on the same side of the spacecraft. This geometry allows JWST to deploy a single tennis-court-sized sunshield to block the heat/light from all three bright sources simultaneously. This keeps its infrared instruments at cryogenic temperatures (approx -233°C).
- Option C is Incorrect. L2 is a point of equilibrium, but it is unstable (like balancing a ball on a peak). Spacecraft require regular fuel burns (“station-keeping”) to remain there. Gravity is not zero; the centrifugal force balances gravity.
- Option D is a common misconception. JWST is not in Earth’s shadow (it relies on solar panels for power). It is in a halo orbit around L2.
Incorrect
Solution: B
- Option B is Correct. At L2 (1.5 million km away), the orbital period matches Earth’s year. This means the Sun, Earth, and Moon are always on the same side of the spacecraft. This geometry allows JWST to deploy a single tennis-court-sized sunshield to block the heat/light from all three bright sources simultaneously. This keeps its infrared instruments at cryogenic temperatures (approx -233°C).
- Option C is Incorrect. L2 is a point of equilibrium, but it is unstable (like balancing a ball on a peak). Spacecraft require regular fuel burns (“station-keeping”) to remain there. Gravity is not zero; the centrifugal force balances gravity.
- Option D is a common misconception. JWST is not in Earth’s shadow (it relies on solar panels for power). It is in a halo orbit around L2.
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Question 2 of 5
2. Question
Match the Weathering Process (Column A) with the Specific Feature/Landform (Column B) and the Dominant Agent (Column C):
Column A (Process) Column B (Feature) Column C (Agent) 1. Frost Wedging i. Karst/Caves P. Oxygen 2. Oxidation ii. Felsenmeer (Block Field) Q. Ice/Water 3. Carbonation iii. Red/Yellow Soil R. Carbonic Acid Which one of the following combinations is correctly matched?
Correct
Solution: D
- 1-ii-Q (Frost Wedging): Water enters cracks, freezes into Ice (Agent Q), and expands. This mechanical force shatters the rock into angular blocks, creating a field of jagged rocks known as a Felsenmeer or Block Field (Feature ii), common in alpine environments.
- 2-iii-P (Oxidation): This involves Oxygen (Agent P) reacting with iron minerals. It creates iron oxides (rust), which gives soil and rocks a distinct Red or Yellow colour (Feature iii).
- 3-i-R (Carbonation): Carbonic Acid (Agent R) dissolves limestone. This chemical removal of rock creates Karst topography/Caves (Feature i).
Incorrect
Solution: D
- 1-ii-Q (Frost Wedging): Water enters cracks, freezes into Ice (Agent Q), and expands. This mechanical force shatters the rock into angular blocks, creating a field of jagged rocks known as a Felsenmeer or Block Field (Feature ii), common in alpine environments.
- 2-iii-P (Oxidation): This involves Oxygen (Agent P) reacting with iron minerals. It creates iron oxides (rust), which gives soil and rocks a distinct Red or Yellow colour (Feature iii).
- 3-i-R (Carbonation): Carbonic Acid (Agent R) dissolves limestone. This chemical removal of rock creates Karst topography/Caves (Feature i).
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Question 3 of 5
3. Question
Match the Local Impact with the Atmospheric Phenomenon:
Impact Phenomenon 1. “Smog” episodes in Indo-Gangetic Plains A. Shallow Radiation Inversion 2. Protection of Orchards in Himalayas B. Valley Inversion (Thermal Belt) 3. Desiccating effect of Trade Winds C. Subsidence Inversion Select the correct matching code:
Correct
Solution: B
- Smog (1-A): Winter pollution is trapped by a low-level radiation inversion that acts as a lid.
- Orchards (2-B): The “Thermal Belt” on valley slopes protects fruit from frost.
- Trade Winds (3-C): The sinking air of the Hadley cell creates a subsidence inversion, preventing vertical cloud growth and creating deserts (e.g., Sahara).
Incorrect
Solution: B
- Smog (1-A): Winter pollution is trapped by a low-level radiation inversion that acts as a lid.
- Orchards (2-B): The “Thermal Belt” on valley slopes protects fruit from frost.
- Trade Winds (3-C): The sinking air of the Hadley cell creates a subsidence inversion, preventing vertical cloud growth and creating deserts (e.g., Sahara).
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Question 4 of 5
4. Question
If the total column of ozone over a particular region is measured to be 150 Dobson Units (DU), what does this imply according to standard atmospheric definitions?
Correct
Solution: A
- The standard definition of the “Ozone Hole” (specifically over Antarctica) is any area where the total column ozone is less than 220 DU.
- A value of 150 DU is significantly below this 220 DU threshold. This indicates severe depletion, typical of the Antarctic Spring (Sept-Oct).
- Average global levels are ~300 DU. 150 DU represents a loss of half the normal shielding.
Incorrect
Solution: A
- The standard definition of the “Ozone Hole” (specifically over Antarctica) is any area where the total column ozone is less than 220 DU.
- A value of 150 DU is significantly below this 220 DU threshold. This indicates severe depletion, typical of the Antarctic Spring (Sept-Oct).
- Average global levels are ~300 DU. 150 DU represents a loss of half the normal shielding.
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Question 5 of 5
5. Question
Consider the following statements regarding the Andaman and Nicobar Islands’ coral ecosystems:
- They host the highest diversity of coral species among all Indian reef regions.
- The reefs are predominantly barrier reefs protecting the islands from cyclones.
Which of the above statements are incorrect?
Correct
Solution: B
- Statement 1 is correct:The Andaman & Nicobar islands have the richest coral diversity in India, with over 177 species reported, compared to fewer species in Lakshadweep and Mannar.
- Statement 2 is incorrect:The reefs are predominantly Fringing Reefs. They grow directly from the shore. Barrier reefs are not the dominant form here.
Incorrect
Solution: B
- Statement 1 is correct:The Andaman & Nicobar islands have the richest coral diversity in India, with over 177 species reported, compared to fewer species in Lakshadweep and Mannar.
- Statement 2 is incorrect:The reefs are predominantly Fringing Reefs. They grow directly from the shore. Barrier reefs are not the dominant form here.
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