UPSC Static Quiz – Geography : 3 March 2026

UPSC Static Quiz – Geography : 3 March 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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• Question 1 of 5 1. Question Match the Spacecraft with the Boundary/Region it is currently exploring (as of 2024-25): Spacecraft Region A. New Horizons 1. Interstellar Space (Beyond Heliopause) B. Voyager 2 2. Kuiper Belt C. Parker Solar Probe 3. Solar Corona Select the correct answer: (a) A-2, B-1, C-3 (b) A-3, B-2, C-1 (c) A-2, B-3, C-1 (d) A-1, B-2, C-3 Correct Solution: A New Horizons (A-2): Launched in 2006, it passed Pluto in 2015 and Arrokoth in 2019. It is currently ~60 AU from the Sun, deep within the Kuiper Belt, measuring dust and plasma. Voyager 2 (B-1): Launched in 1977, it crossed the Heliopause in 2018. It is currently at ~137 AU, operating in Interstellar Space. Parker Solar Probe (C-3): A mission to “touch the Sun,” it orbits within the Solar Corona, studying the solar wind’s acceleration mechanism closer than any probe before. Incorrect Solution: A New Horizons (A-2): Launched in 2006, it passed Pluto in 2015 and Arrokoth in 2019. It is currently ~60 AU from the Sun, deep within the Kuiper Belt, measuring dust and plasma. Voyager 2 (B-1): Launched in 1977, it crossed the Heliopause in 2018. It is currently at ~137 AU, operating in Interstellar Space. Parker Solar Probe (C-3): A mission to “touch the Sun,” it orbits within the Solar Corona, studying the solar wind’s acceleration mechanism closer than any probe before.

#### 1. Question

Match the Spacecraft with the Boundary/Region it is currently exploring (as of 2024-25):

Spacecraft | Region

A. New Horizons | 1. Interstellar Space (Beyond Heliopause)

B. Voyager 2 | 2. Kuiper Belt

C. Parker Solar Probe | 3. Solar Corona

Select the correct answer:

• (a) A-2, B-1, C-3

• (b) A-3, B-2, C-1

• (c) A-2, B-3, C-1

• (d) A-1, B-2, C-3

Solution: A

• New Horizons (A-2): Launched in 2006, it passed Pluto in 2015 and Arrokoth in 2019. It is currently ~60 AU from the Sun, deep within the Kuiper Belt, measuring dust and plasma.

• Voyager 2 (B-1): Launched in 1977, it crossed the Heliopause in 2018. It is currently at ~137 AU, operating in Interstellar Space.

• Parker Solar Probe (C-3): A mission to “touch the Sun,” it orbits within the Solar Corona, studying the solar wind’s acceleration mechanism closer than any probe before.

Solution: A

• New Horizons (A-2): Launched in 2006, it passed Pluto in 2015 and Arrokoth in 2019. It is currently ~60 AU from the Sun, deep within the Kuiper Belt, measuring dust and plasma.

• Voyager 2 (B-1): Launched in 1977, it crossed the Heliopause in 2018. It is currently at ~137 AU, operating in Interstellar Space.

• Parker Solar Probe (C-3): A mission to “touch the Sun,” it orbits within the Solar Corona, studying the solar wind’s acceleration mechanism closer than any probe before.

• Question 2 of 5 2. Question The “IBEX Ribbon,” a discovery made by the Interstellar Boundary Explorer mission, refers to: a) The trail of charged particles left by the heliosphere as it moves through the galaxy. b) A narrow band of enhanced Energetic Neutral Atom (ENA) emissions stretching across the sky. c) A magnetic flux rope connecting the Sun and Earth. d) A ring of dust surrounding the Sun at the distance of Mercury. Correct Solution: B The IBEX Ribbon was an unexpected discovery made in 2009. The IBEX spacecraft maps the heliosphere not by taking pictures of light, but by detecting Energetic Neutral Atoms (ENAs). These are created when solar wind protons steal electrons from interstellar neutral atoms (charge exchange) and travel back inward toward Earth. When IBEX produced its first all-sky map, it found a bright, continuous band or “ribbon” of high ENA intensity that did not align with any known solar system coordinates. Current theories suggest this ribbon is an optical illusion of sorts, created by the reflection of solar wind particles by the Interstellar Magnetic Field (ISMF) outside the heliopause. The alignment of the ribbon tells us about the direction and strength of the magnetic field in the local galaxy, which shapes our heliosphere. Incorrect Solution: B The IBEX Ribbon was an unexpected discovery made in 2009. The IBEX spacecraft maps the heliosphere not by taking pictures of light, but by detecting Energetic Neutral Atoms (ENAs). These are created when solar wind protons steal electrons from interstellar neutral atoms (charge exchange) and travel back inward toward Earth. When IBEX produced its first all-sky map, it found a bright, continuous band or “ribbon” of high ENA intensity that did not align with any known solar system coordinates. Current theories suggest this ribbon is an optical illusion of sorts, created by the reflection of solar wind particles by the Interstellar Magnetic Field (ISMF) outside the heliopause. The alignment of the ribbon tells us about the direction and strength of the magnetic field in the local galaxy, which shapes our heliosphere.

#### 2. Question

The “IBEX Ribbon,” a discovery made by the Interstellar Boundary Explorer mission, refers to:

• a) The trail of charged particles left by the heliosphere as it moves through the galaxy.

• b) A narrow band of enhanced Energetic Neutral Atom (ENA) emissions stretching across the sky.

• c) A magnetic flux rope connecting the Sun and Earth.

• d) A ring of dust surrounding the Sun at the distance of Mercury.

Solution: B

• The IBEX Ribbon was an unexpected discovery made in 2009. The IBEX spacecraft maps the heliosphere not by taking pictures of light, but by detecting Energetic Neutral Atoms (ENAs). These are created when solar wind protons steal electrons from interstellar neutral atoms (charge exchange) and travel back inward toward Earth.

• When IBEX produced its first all-sky map, it found a bright, continuous band or “ribbon” of high ENA intensity that did not align with any known solar system coordinates. Current theories suggest this ribbon is an optical illusion of sorts, created by the reflection of solar wind particles by the Interstellar Magnetic Field (ISMF) outside the heliopause. The alignment of the ribbon tells us about the direction and strength of the magnetic field in the local galaxy, which shapes our heliosphere.

Solution: B

• Question 3 of 5 3. Question Consider the following pairs of weathering processes and their descriptions: Process Description 1. Carbonation Reaction of minerals with carbonic acid forming carbonates 2. Hydrolysis Reaction of water with minerals to form clays 3. Hydration Physical addition of water causing volume expansion 4. Oxidation Physical breakdown due to thermal fluctuations How many pairs given above are correctly matched? (a) Only one (b) Only two (c) Only three (d) All four Correct Solution: C Pair 1 (carbonation) is correctly matched. Carbonation is a chemical weathering process in which carbon dioxide dissolves in rainwater to form weak carbonic acid. This acid reacts with carbonate minerals, especially calcium carbonate in limestone, converting it into soluble bicarbonates. This process is responsible for the development of solution features such as caves, sinkholes, and karst landscapes. Pair 2 (hydrolysis) is also correctly matched. Hydrolysis involves the chemical reaction between water and silicate minerals, leading to the formation of clay minerals and soluble ions. Feldspar weathering into kaolinite is a classic example. Hydrolysis is particularly dominant in warm and humid climates and plays a major role in soil formation and regolith development. Pair 3 (hydration) is correctly matched as well. Hydration refers to the addition of water molecules into the crystal structure of minerals, resulting in volume expansion. This expansion creates internal stress and weakens the rock. The transformation of anhydrite into gypsum is a commonly cited example. Pair 4 (oxidation) is incorrectly matched. Oxidation is a chemical weathering process involving the reaction of minerals, especially iron-bearing minerals, with oxygen to form oxides or hydroxides. Physical breakdown due to thermal fluctuations is instead known as thermal expansion or insolation weathering. Incorrect Solution: C Pair 1 (carbonation) is correctly matched. Carbonation is a chemical weathering process in which carbon dioxide dissolves in rainwater to form weak carbonic acid. This acid reacts with carbonate minerals, especially calcium carbonate in limestone, converting it into soluble bicarbonates. This process is responsible for the development of solution features such as caves, sinkholes, and karst landscapes. Pair 2 (hydrolysis) is also correctly matched. Hydrolysis involves the chemical reaction between water and silicate minerals, leading to the formation of clay minerals and soluble ions. Feldspar weathering into kaolinite is a classic example. Hydrolysis is particularly dominant in warm and humid climates and plays a major role in soil formation and regolith development. Pair 3 (hydration) is correctly matched as well. Hydration refers to the addition of water molecules into the crystal structure of minerals, resulting in volume expansion. This expansion creates internal stress and weakens the rock. The transformation of anhydrite into gypsum is a commonly cited example. Pair 4 (oxidation) is incorrectly matched. Oxidation is a chemical weathering process involving the reaction of minerals, especially iron-bearing minerals, with oxygen to form oxides or hydroxides. Physical breakdown due to thermal fluctuations is instead known as thermal expansion or insolation weathering.

#### 3. Question

Consider the following pairs of weathering processes and their descriptions:

Process | Description

1.Carbonation | Reaction of minerals with carbonic acid forming carbonates
2.Hydrolysis | Reaction of water with minerals to form clays
3.Hydration | Physical addition of water causing volume expansion
4.Oxidation | Physical breakdown due to thermal fluctuations

How many pairs given above are correctly matched?

• (a) Only one

• (b) Only two

• (c) Only three

• (d) All four

Solution: C

• Pair 1 (carbonation) is correctly matched. Carbonation is a chemical weathering process in which carbon dioxide dissolves in rainwater to form weak carbonic acid. This acid reacts with carbonate minerals, especially calcium carbonate in limestone, converting it into soluble bicarbonates. This process is responsible for the development of solution features such as caves, sinkholes, and karst landscapes.

• Pair 2 (hydrolysis) is also correctly matched. Hydrolysis involves the chemical reaction between water and silicate minerals, leading to the formation of clay minerals and soluble ions. Feldspar weathering into kaolinite is a classic example. Hydrolysis is particularly dominant in warm and humid climates and plays a major role in soil formation and regolith development.

• Pair 3 (hydration) is correctly matched as well. Hydration refers to the addition of water molecules into the crystal structure of minerals, resulting in volume expansion. This expansion creates internal stress and weakens the rock. The transformation of anhydrite into gypsum is a commonly cited example.

• Pair 4 (oxidation) is incorrectly matched. Oxidation is a chemical weathering process involving the reaction of minerals, especially iron-bearing minerals, with oxygen to form oxides or hydroxides. Physical breakdown due to thermal fluctuations is instead known as thermal expansion or insolation weathering.

Solution: C

• Question 4 of 5 4. Question “Exfoliation domes” are large, rounded landforms often seen in granitic terrains. Which of the following is the primary mechanism responsible for their formation? (a) Intense frost wedging in high-altitude glacial regions (b) Unloading or pressure release due to the removal of overlying burden (c) Rapid cooling of lava on the surface forming contraction joints (d) Chemical dissolution of the outer rock layers by acid rain Correct Solution: B The Mechanism:Exfoliation (or onion-skin weathering) occurs when intrusive igneous rocks like granite, which formed deep underground under high pressure, are exposed to the surface by erosion. Unloading:As the heavy overlying rock weight is removed (unloading), the rock mass expands upwards. This vertical expansion is not uniform; it creates fractures or joints parallel to the surface of the ground. Result:Sheets of rock slab off (spall) from the exposed surface, eventually rounding the angular rock mass into a dome-shaped hill (Exfoliation Dome). Incorrect Solution: B The Mechanism:Exfoliation (or onion-skin weathering) occurs when intrusive igneous rocks like granite, which formed deep underground under high pressure, are exposed to the surface by erosion. Unloading:As the heavy overlying rock weight is removed (unloading), the rock mass expands upwards. This vertical expansion is not uniform; it creates fractures or joints parallel to the surface of the ground. Result:Sheets of rock slab off (spall) from the exposed surface, eventually rounding the angular rock mass into a dome-shaped hill (Exfoliation Dome).

#### 4. Question

“Exfoliation domes” are large, rounded landforms often seen in granitic terrains. Which of the following is the primary mechanism responsible for their formation?

• (a) Intense frost wedging in high-altitude glacial regions

• (b) Unloading or pressure release due to the removal of overlying burden

• (c) Rapid cooling of lava on the surface forming contraction joints

• (d) Chemical dissolution of the outer rock layers by acid rain

Solution: B

• The Mechanism:Exfoliation (or onion-skin weathering) occurs when intrusive igneous rocks like granite, which formed deep underground under high pressure, are exposed to the surface by erosion.

• Unloading:As the heavy overlying rock weight is removed (unloading), the rock mass expands upwards. This vertical expansion is not uniform; it creates fractures or joints parallel to the surface of the ground.

• Result:Sheets of rock slab off (spall) from the exposed surface, eventually rounding the angular rock mass into a dome-shaped hill (Exfoliation Dome).

Solution: B

• Result:Sheets of rock slab off (spall) from the exposed surface, eventually rounding the angular rock mass into a dome-shaped hill (Exfoliation Dome).

• Question 5 of 5 5. Question Consider the following pairs regarding Cloud Classifications: Column A (Genus) Column B (Physical Feature) Column C (Associated Weather) 1. Cirrostratus Thin, transparent veil causing halos Indicates approaching Warm Front 2. Altocumulus Globular masses / “Mackerel Sky” Generally fair, but change likely 3. Nimbostratus Dark, amorphous, low layer Steady, continuous precipitation Which of the above pairs are correctly matched across all three columns? (A) 1 and 3 only (B) 2 and 3 only (C) 1 and 2 only (D) 1, 2 and 3 Correct Solution: D Row 1 (Cirrostratus): High-altitude ice clouds. Refract light to form Halos. Often the first sign of a cyclone/warm front. Row 2 (Altocumulus): Mid-level. The “Mackerel sky” pattern resembles fish scales. Indicates instability aloft. Row 3 (Nimbostratus): The “Rain Cloud.” Thick, dark, uniform layer. Produces the long-duration rain associated with warm fronts, distinct from the short-duration showers of Cumulonimbus. Incorrect Solution: D Row 1 (Cirrostratus): High-altitude ice clouds. Refract light to form Halos. Often the first sign of a cyclone/warm front. Row 2 (Altocumulus): Mid-level. The “Mackerel sky” pattern resembles fish scales. Indicates instability aloft. Row 3 (Nimbostratus): The “Rain Cloud.” Thick, dark, uniform layer. Produces the long-duration rain associated with warm fronts, distinct from the short-duration showers of Cumulonimbus.

#### 5. Question

Consider the following pairs regarding Cloud Classifications:

Column A (Genus) | Column B (Physical Feature) | Column C (Associated Weather)

1.Cirrostratus | Thin, transparent veil causing halos | Indicates approaching Warm Front
2.Altocumulus | Globular masses / “Mackerel Sky” | Generally fair, but change likely
3.Nimbostratus | Dark, amorphous, low layer | Steady, continuous precipitation

Which of the above pairs are correctly matched across all three columns?

• (A) 1 and 3 only

• (B) 2 and 3 only

• (C) 1 and 2 only

• (D) 1, 2 and 3

Solution: D

• Row 1 (Cirrostratus): High-altitude ice clouds. Refract light to form Halos. Often the first sign of a cyclone/warm front.

• Row 2 (Altocumulus): Mid-level. The “Mackerel sky” pattern resembles fish scales. Indicates instability aloft.

• Row 3 (Nimbostratus): The “Rain Cloud.” Thick, dark, uniform layer. Produces the long-duration rain associated with warm fronts, distinct from the short-duration showers of Cumulonimbus.

Solution: D

• Row 1 (Cirrostratus): High-altitude ice clouds. Refract light to form Halos. Often the first sign of a cyclone/warm front.

• Row 2 (Altocumulus): Mid-level. The “Mackerel sky” pattern resembles fish scales. Indicates instability aloft.

• Row 3 (Nimbostratus): The “Rain Cloud.” Thick, dark, uniform layer. Produces the long-duration rain associated with warm fronts, distinct from the short-duration showers of Cumulonimbus.

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