UPSC Static Quiz – Geography : 7 November 2024

UPSC Static Quiz – Geography : 7 November 2024 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 Which of the following correctly represents deposition as a phase in erosion? a) The process by which sediments are picked up by agents like wind and water b) The accumulation of new soil layers formed by chemical reactions within rocks c) The rapid breakdown of rocks into smaller particles through physical forces d) The final stage of erosion where transported sediments are settled due to a decrease in the carrying agent’s energy Correct Solution: d) Deposition marks the end of the erosion process and occurs when the energy of the transporting agent (such as wind, water, or ice) diminishes to a point where it can no longer hold or move the sediment. This leads to the settling and accumulation of sediment in areas like riverbeds, lakes, coastlines, and valleys. This concept is essential in understanding sedimentary landscapes and features such as deltas, sand dunes, and alluvial fans, where sediment deposited over time creates new landforms. Incorrect Solution: d) Deposition marks the end of the erosion process and occurs when the energy of the transporting agent (such as wind, water, or ice) diminishes to a point where it can no longer hold or move the sediment. This leads to the settling and accumulation of sediment in areas like riverbeds, lakes, coastlines, and valleys. This concept is essential in understanding sedimentary landscapes and features such as deltas, sand dunes, and alluvial fans, where sediment deposited over time creates new landforms.

#### 1. Question

Which of the following correctly represents deposition as a phase in erosion?

• a) The process by which sediments are picked up by agents like wind and water

• b) The accumulation of new soil layers formed by chemical reactions within rocks

• c) The rapid breakdown of rocks into smaller particles through physical forces

• d) The final stage of erosion where transported sediments are settled due to a decrease in the carrying agent’s energy

Solution: d)

Deposition marks the end of the erosion process and occurs when the energy of the transporting agent (such as wind, water, or ice) diminishes to a point where it can no longer hold or move the sediment. This leads to the settling and accumulation of sediment in areas like riverbeds, lakes, coastlines, and valleys. This concept is essential in understanding sedimentary landscapes and features such as deltas, sand dunes, and alluvial fans, where sediment deposited over time creates new landforms.

Solution: d)

• Question 2 of 5 2. Question Which of the following statements is correct about the transition from V-shaped to U-shaped valleys? The transition occurs during the youthful stage of a river. The change in shape is due to intensified vertical erosion at the valley floor. The transition is driven by lateral erosion that widens the valley over time. U-shaped valleys are a temporary formation that quickly revert to V-shaped profiles. Select the correct answer code: a) 1 only b) 2 only c) 3 only d) 1 and 4 only Correct Solution: c) The transition from a V-shaped to a U-shaped valley typically occurs as the river reaches maturity, not during the youthful stage, making statement 1 incorrect. Statement 2 is also incorrect because the transition to a U-shaped valley is primarily due to lateral erosion, not vertical erosion, which widens the valley floor rather than deepening it. Statement 3 is correct; as the river matures, lateral erosion becomes more prominent, causing the valley walls to recede and the valley to broaden into a U shape. Statement 4 is incorrect because U-shaped valleys, once formed, do not revert to V-shaped profiles. The U-shaped profile is common in mature rivers and glacial valleys where lateral erosion reshapes the valley, forming a broad base with a gentle, concave slope. Incorrect Solution: c) The transition from a V-shaped to a U-shaped valley typically occurs as the river reaches maturity, not during the youthful stage, making statement 1 incorrect. Statement 2 is also incorrect because the transition to a U-shaped valley is primarily due to lateral erosion, not vertical erosion, which widens the valley floor rather than deepening it. Statement 3 is correct; as the river matures, lateral erosion becomes more prominent, causing the valley walls to recede and the valley to broaden into a U shape. Statement 4 is incorrect because U-shaped valleys, once formed, do not revert to V-shaped profiles. The U-shaped profile is common in mature rivers and glacial valleys where lateral erosion reshapes the valley, forming a broad base with a gentle, concave slope.

#### 2. Question

Which of the following statements is correct about the transition from V-shaped to U-shaped valleys?

• The transition occurs during the youthful stage of a river.

• The change in shape is due to intensified vertical erosion at the valley floor.

• The transition is driven by lateral erosion that widens the valley over time.

• U-shaped valleys are a temporary formation that quickly revert to V-shaped profiles.

Select the correct answer code:

• d) 1 and 4 only

Solution: c)

The transition from a V-shaped to a U-shaped valley typically occurs as the river reaches maturity, not during the youthful stage, making statement 1 incorrect.

Statement 2 is also incorrect because the transition to a U-shaped valley is primarily due to lateral erosion, not vertical erosion, which widens the valley floor rather than deepening it.

Statement 3 is correct; as the river matures, lateral erosion becomes more prominent, causing the valley walls to recede and the valley to broaden into a U shape.

Statement 4 is incorrect because U-shaped valleys, once formed, do not revert to V-shaped profiles.

The U-shaped profile is common in mature rivers and glacial valleys where lateral erosion reshapes the valley, forming a broad base with a gentle, concave slope.

Solution: c)

The transition from a V-shaped to a U-shaped valley typically occurs as the river reaches maturity, not during the youthful stage, making statement 1 incorrect.

Statement 2 is also incorrect because the transition to a U-shaped valley is primarily due to lateral erosion, not vertical erosion, which widens the valley floor rather than deepening it.

Statement 3 is correct; as the river matures, lateral erosion becomes more prominent, causing the valley walls to recede and the valley to broaden into a U shape.

Statement 4 is incorrect because U-shaped valleys, once formed, do not revert to V-shaped profiles.

The U-shaped profile is common in mature rivers and glacial valleys where lateral erosion reshapes the valley, forming a broad base with a gentle, concave slope.

• Question 3 of 5 3. Question Consider the following statements regarding hailstones: Hailstones can form in any weather condition as long as there is precipitation. Hailstones consist of layers of clear and cloudy ice, formed from super-cooled droplets. Hail is generally larger than sleet and can vary in size from a pea to larger than a grapefruit. How many of the above statements is/are correct? a) Only one b) Only two c) All three d) None Correct Solution: b) Statement 2 is correct as hailstones form in layers of clear and cloudy ice through the freezing of super-cooled droplets within strong updrafts. Statement 3 is also correct; hailstones can indeed be much larger than sleet, with sizes ranging from a pea to larger than a grapefruit. Statement 1 is incorrect because hailstones require specific conditions, including strong thunderstorms with updrafts and are not common in mild weather conditions. Incorrect Solution: b) Statement 2 is correct as hailstones form in layers of clear and cloudy ice through the freezing of super-cooled droplets within strong updrafts. Statement 3 is also correct; hailstones can indeed be much larger than sleet, with sizes ranging from a pea to larger than a grapefruit. Statement 1 is incorrect because hailstones require specific conditions, including strong thunderstorms with updrafts and are not common in mild weather conditions.

#### 3. Question

Consider the following statements regarding hailstones:

• Hailstones can form in any weather condition as long as there is precipitation.

• Hailstones consist of layers of clear and cloudy ice, formed from super-cooled droplets.

• Hail is generally larger than sleet and can vary in size from a pea to larger than a grapefruit.

How many of the above statements is/are correct?

• a) Only one

• b) Only two

• c) All three

Solution: b)

Statement 2 is correct as hailstones form in layers of clear and cloudy ice through the freezing of super-cooled droplets within strong updrafts.

Statement 3 is also correct; hailstones can indeed be much larger than sleet, with sizes ranging from a pea to larger than a grapefruit.

Statement 1 is incorrect because hailstones require specific conditions, including strong thunderstorms with updrafts and are not common in mild weather conditions.

Solution: b)

Statement 2 is correct as hailstones form in layers of clear and cloudy ice through the freezing of super-cooled droplets within strong updrafts.

Statement 3 is also correct; hailstones can indeed be much larger than sleet, with sizes ranging from a pea to larger than a grapefruit.

Statement 1 is incorrect because hailstones require specific conditions, including strong thunderstorms with updrafts and are not common in mild weather conditions.

• Question 4 of 5 4. Question Consider the following statements regarding the Indo-Gangetic Plains and oxbow lakes: The southward shifting of the Ganga River has left oxbow lakes to the north of its present course. Oxbow lakes in the Indo-Gangetic plains are formed primarily due to glacial activity. These oxbow lakes provide evidence of historical changes in the river’s course. How many of the above statements is/are correct? a) Only one b) Only two c) All three d) None Correct Solution: b) The Indo-Gangetic plains have several oxbow lakes, especially to the north of the present Ganga River course, resulting from the southward shifting of the river over time, making statement 1 correct. These oxbow lakes provide significant evidence of past river courses and meandering patterns, confirming statement 3 as correct. However, statement 2 is incorrect, as the formation of oxbow lakes in the plains is due to fluvial processes—particularly river meandering and lateral shifting—rather than glacial activity. The presence of oxbow lakes helps geologists trace historical patterns of river movement and changes in the river’s dynamics over time. Incorrect Solution: b) The Indo-Gangetic plains have several oxbow lakes, especially to the north of the present Ganga River course, resulting from the southward shifting of the river over time, making statement 1 correct. These oxbow lakes provide significant evidence of past river courses and meandering patterns, confirming statement 3 as correct. However, statement 2 is incorrect, as the formation of oxbow lakes in the plains is due to fluvial processes—particularly river meandering and lateral shifting—rather than glacial activity. The presence of oxbow lakes helps geologists trace historical patterns of river movement and changes in the river’s dynamics over time.

#### 4. Question

Consider the following statements regarding the Indo-Gangetic Plains and oxbow lakes:

• The southward shifting of the Ganga River has left oxbow lakes to the north of its present course.

• Oxbow lakes in the Indo-Gangetic plains are formed primarily due to glacial activity.

• These oxbow lakes provide evidence of historical changes in the river’s course.

How many of the above statements is/are correct?

• a) Only one

• b) Only two

• c) All three

Solution: b)

The Indo-Gangetic plains have several oxbow lakes, especially to the north of the present Ganga River course, resulting from the southward shifting of the river over time, making statement 1 correct.

These oxbow lakes provide significant evidence of past river courses and meandering patterns, confirming statement 3 as correct.

However, statement 2 is incorrect, as the formation of oxbow lakes in the plains is due to fluvial processes—particularly river meandering and lateral shifting—rather than glacial activity.

The presence of oxbow lakes helps geologists trace historical patterns of river movement and changes in the river’s dynamics over time.

Solution: b)

The Indo-Gangetic plains have several oxbow lakes, especially to the north of the present Ganga River course, resulting from the southward shifting of the river over time, making statement 1 correct.

These oxbow lakes provide significant evidence of past river courses and meandering patterns, confirming statement 3 as correct.

However, statement 2 is incorrect, as the formation of oxbow lakes in the plains is due to fluvial processes—particularly river meandering and lateral shifting—rather than glacial activity.

The presence of oxbow lakes helps geologists trace historical patterns of river movement and changes in the river’s dynamics over time.

• Question 5 of 5 5. Question Which of the following conditions is most commonly associated with the formation of snow? a) Low humidity levels and high temperatures a) Low humidity levels and high temperatures c) Sub-freezing temperatures with cirrus clouds d) Rainy weather with cumulus clouds Correct Solution: c) Snow generally forms in sub-freezing temperatures and often accompanies high, thin cirrus clouds, which are typical in colder atmospheric conditions. When the temperature is below freezing, water vapor directly crystallizes into ice, forming snowflakes. These ice crystals often fall as snow if the air near the surface is also cold, but they may partially melt if they pass through warmer layers, sometimes resulting in mixed precipitation. Snow can fall even at slightly above-freezing temperatures if rapid cooling around the flakes prevents full melting. This cooling is achieved through immediate evaporation, which temporarily cools the air around the snowflakes, allowing them to reach the ground as snow. Incorrect Solution: c) Snow generally forms in sub-freezing temperatures and often accompanies high, thin cirrus clouds, which are typical in colder atmospheric conditions. When the temperature is below freezing, water vapor directly crystallizes into ice, forming snowflakes. These ice crystals often fall as snow if the air near the surface is also cold, but they may partially melt if they pass through warmer layers, sometimes resulting in mixed precipitation. Snow can fall even at slightly above-freezing temperatures if rapid cooling around the flakes prevents full melting. This cooling is achieved through immediate evaporation, which temporarily cools the air around the snowflakes, allowing them to reach the ground as snow.

#### 5. Question

Which of the following conditions is most commonly associated with the formation of snow?

• a) Low humidity levels and high temperatures

• c) Sub-freezing temperatures with cirrus clouds

• d) Rainy weather with cumulus clouds

Solution: c)

Snow generally forms in sub-freezing temperatures and often accompanies high, thin cirrus clouds, which are typical in colder atmospheric conditions. When the temperature is below freezing, water vapor directly crystallizes into ice, forming snowflakes. These ice crystals often fall as snow if the air near the surface is also cold, but they may partially melt if they pass through warmer layers, sometimes resulting in mixed precipitation. Snow can fall even at slightly above-freezing temperatures if rapid cooling around the flakes prevents full melting. This cooling is achieved through immediate evaporation, which temporarily cools the air around the snowflakes, allowing them to reach the ground as snow.

Solution: c)

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