UPSC Static Quiz – Geography : 30 May 2025

UPSC Static Quiz – Geography : 30 May 2025 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 Consider the following statements. The gravitational force of the earth holds the atmosphere around it. Earth’s atmosphere is only about 1/100th as dense as Mars’. Which of the above statements is/are incorrect? a) 1 only b) 2 only c) Both 1 and 2 d) Neither 1 nor 2 Correct Solution: b) The atmosphere is the thin layer of air that surrounds the earth. The gravitational force of the earth holds the atmosphere around it. It protects us from the harmful rays and scorching heat of the sun. It consists of a number of gases, dust and water vapour. The changes in the atmosphere produce changes in the weather and climate. Earth’s gravity is strong enough to hold onto its atmosphere. Mars, for example, is less than half Earth’s size and around one-tenth Earth’s mass. Less mass means less gravitational pull. Mars’ atmosphere is only about 1/100th as dense as Earth’s. And, by the way, it is mostly CO2. Incorrect Solution: b) The atmosphere is the thin layer of air that surrounds the earth. The gravitational force of the earth holds the atmosphere around it. It protects us from the harmful rays and scorching heat of the sun. It consists of a number of gases, dust and water vapour. The changes in the atmosphere produce changes in the weather and climate. Earth’s gravity is strong enough to hold onto its atmosphere. Mars, for example, is less than half Earth’s size and around one-tenth Earth’s mass. Less mass means less gravitational pull. Mars’ atmosphere is only about 1/100th as dense as Earth’s. And, by the way, it is mostly CO2.

#### 1. Question

Consider the following statements.

• The gravitational force of the earth holds the atmosphere around it.

• Earth’s atmosphere is only about 1/100th as dense as Mars’.

Which of the above statements is/are incorrect?

• c) Both 1 and 2

• d) Neither 1 nor 2

Solution: b)

The atmosphere is the thin layer of air that surrounds the earth. The gravitational force of the earth holds the atmosphere around it. It protects us from the harmful rays and scorching heat of the sun.

It consists of a number of gases, dust and water vapour. The changes in the atmosphere produce changes in the weather and climate.

Earth’s gravity is strong enough to hold onto its atmosphere. Mars, for example, is less than half Earth’s size and around one-tenth Earth’s mass. Less mass means less gravitational pull. Mars’ atmosphere is only about 1/100th as dense as Earth’s. And, by the way, it is mostly CO2.

Solution: b)

It consists of a number of gases, dust and water vapour. The changes in the atmosphere produce changes in the weather and climate.

• Question 2 of 5 2. Question Lithospheric plates move around very slowly – just a few millimetres each year. What is the reason behind this movement? a) Formation of folds on earth’s crust b) Rotation of earth c) Ocean currents d) Movement of magma inside earth Correct Solution: d) The lithosphere is broken into a number of plates known as the Lithospheric plates. The molten magma inside the earth moves in a circular manner. These plates move because of the movement of the molten magma inside the earth. Incorrect Solution: d) The lithosphere is broken into a number of plates known as the Lithospheric plates. The molten magma inside the earth moves in a circular manner. These plates move because of the movement of the molten magma inside the earth.

#### 2. Question

Lithospheric plates move around very slowly – just a few millimetres each year. What is the reason behind this movement?

• a) Formation of folds on earth’s crust

• b) Rotation of earth

• c) Ocean currents

• d) Movement of magma inside earth

Solution: d)

The lithosphere is broken into a number of plates known as the Lithospheric plates.

The molten magma inside the earth moves in a circular manner. These plates move because of the movement of the molten magma inside the earth.

Solution: d)

The lithosphere is broken into a number of plates known as the Lithospheric plates.

The molten magma inside the earth moves in a circular manner. These plates move because of the movement of the molten magma inside the earth.

• Question 3 of 5 3. Question Consider the following statements. Tornados and cyclones do not co-exist. The direction of rotation of a hurricane/cyclone is decided by the direction of earth’s rotation, which is not the case with tornadoes. Tornadoes are much smaller in scale than hurricanes. How many of the above statements is/are correct? (a) Only one (b) Only two (c) All three (d) None Correct Solution: a) Only Statement 3 is correct. A tornado may form within a cyclone. A tornado forms due to the effect of low pressure in the eye of a cyclone. Tornadoes and hurricanes appear to be similar in their general structure. Both are characterized by extremely strong horizontal winds swirling around the center, strong upward motion dominating the circulation with some downward motion in the center. Hurricanes always rotate counterclockwise in the northern hemisphere (clockwise in the southern), the direction of their rotation being determined by the Earth’s rotation. This is almost always true of tornadoes too, although on rare occasions “anticyclonic” tornadoes spinning in the opposite direction do occur. The most obvious difference between tornadoes and hurricanes is that they have drastically different scales. They form under different circumstances and have different impacts on the environment. Tornadoes are “small-scale circulations”. Hurricanes, on the other hand, are large-scale circulations. Incorrect Solution: a) Only Statement 3 is correct. A tornado may form within a cyclone. A tornado forms due to the effect of low pressure in the eye of a cyclone. Tornadoes and hurricanes appear to be similar in their general structure. Both are characterized by extremely strong horizontal winds swirling around the center, strong upward motion dominating the circulation with some downward motion in the center. Hurricanes always rotate counterclockwise in the northern hemisphere (clockwise in the southern), the direction of their rotation being determined by the Earth’s rotation. This is almost always true of tornadoes too, although on rare occasions “anticyclonic” tornadoes spinning in the opposite direction do occur. The most obvious difference between tornadoes and hurricanes is that they have drastically different scales. They form under different circumstances and have different impacts on the environment. Tornadoes are “small-scale circulations”. Hurricanes, on the other hand, are large-scale circulations.

#### 3. Question

Consider the following statements.

• Tornados and cyclones do not co-exist.

• The direction of rotation of a hurricane/cyclone is decided by the direction of earth’s rotation, which is not the case with tornadoes.

• Tornadoes are much smaller in scale than hurricanes.

How many of the above statements is/are correct?

• (a) Only one

• (b) Only two

• (c) All three

Solution: a)

Only Statement 3 is correct.

A tornado may form within a cyclone. A tornado forms due to the effect of low pressure in the eye of a cyclone.

Tornadoes and hurricanes appear to be similar in their general structure. Both are characterized by extremely strong horizontal winds swirling around the center, strong upward motion dominating the circulation with some downward motion in the center. Hurricanes always rotate counterclockwise in the northern hemisphere (clockwise in the southern), the direction of their rotation being determined by the Earth’s rotation. This is almost always true of tornadoes too, although on rare occasions “anticyclonic” tornadoes spinning in the opposite direction do occur.

The most obvious difference between tornadoes and hurricanes is that they have drastically different scales. They form under different circumstances and have different impacts on the environment. Tornadoes are “small-scale circulations”. Hurricanes, on the other hand, are large-scale circulations.

Solution: a)

Only Statement 3 is correct.

A tornado may form within a cyclone. A tornado forms due to the effect of low pressure in the eye of a cyclone.

• Question 4 of 5 4. Question Acidification of ocean can have a beneficial effect on Photosynthetic algae Deep sea corals Seagrasses Select the correct answer code: a) 2 only b) 1, 2 c) 1, 3 d) 1, 2, 3 Correct Solution: c) Ocean acidification is the ongoing decrease in the pH of the Earth’s oceans, caused by the uptake of carbon dioxide (CO2) from the atmosphere. Ocean acidification is expected to impact ocean species to varying degrees. Photosynthetic algae and seagrasses may benefit from higher CO2 conditions in the ocean, as they require CO2 to live just like plants on land. On the other hand, studies have shown that a more acidic environment has a dramatic effect on some calcifying species, including oysters, clams, sea urchins, shallow water corals, deep sea corals, and calcareous plankton. Incorrect Solution: c) Ocean acidification is the ongoing decrease in the pH of the Earth’s oceans, caused by the uptake of carbon dioxide (CO2) from the atmosphere. Ocean acidification is expected to impact ocean species to varying degrees. Photosynthetic algae and seagrasses may benefit from higher CO2 conditions in the ocean, as they require CO2 to live just like plants on land. On the other hand, studies have shown that a more acidic environment has a dramatic effect on some calcifying species, including oysters, clams, sea urchins, shallow water corals, deep sea corals, and calcareous plankton.

#### 4. Question

Acidification of ocean can have a beneficial effect on

• Photosynthetic algae

• Deep sea corals

• Seagrasses

Select the correct answer code:

• d) 1, 2, 3

Solution: c)

Ocean acidification is the ongoing decrease in the pH of the Earth’s oceans, caused by the uptake of carbon dioxide (CO2) from the atmosphere.

Ocean acidification is expected to impact ocean species to varying degrees. Photosynthetic algae and seagrasses may benefit from higher CO2 conditions in the ocean, as they require CO2 to live just like plants on land.

On the other hand, studies have shown that a more acidic environment has a dramatic effect on some calcifying species, including oysters, clams, sea urchins, shallow water corals, deep sea corals, and calcareous plankton.

Solution: c)

Ocean acidification is the ongoing decrease in the pH of the Earth’s oceans, caused by the uptake of carbon dioxide (CO2) from the atmosphere.

• Question 5 of 5 5. Question What is the correct sequence of occurrence of the countries in Eastern coast of Africa as one proceeds from South to North? Mozambique Tanzania Kenya Somalia Select the correct answer code: a) 2-3-1-4 b) 1-2-3-4 c) 2-1-4-3 d) 3-2-1-4 Correct Solution: b) Incorrect Solution: b)

#### 5. Question

What is the correct sequence of occurrence of the countries in Eastern coast of Africa as one proceeds from South to North?

• Mozambique

Select the correct answer code:

• a) 2-3-1-4

• b) 1-2-3-4

• c) 2-1-4-3

• d) 3-2-1-4

Solution: b)

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