World and Physical Geography

231. Which one among the following ocean currents mixes with Labrador

Which one among the following ocean currents mixes with Labrador current?

[amp_mcq option1=”Canaries current” option2=”Benguela current” option3=”Florida current” option4=”California current” correct=”option3″]

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The correct answer is C. The Labrador Current, a cold current, mixes with the warm waters originating from the Gulf Stream system, which includes the Florida Current.
– The Labrador Current flows from the Arctic Ocean southward along the coast of Labrador and Newfoundland.
– It meets the Gulf Stream system off the Grand Banks of Newfoundland.
– The Gulf Stream is a powerful warm ocean current that flows from the Gulf of Mexico and the Caribbean Sea northward into the Atlantic Ocean. The Florida Current is a component of the Gulf Stream, flowing through the Florida Straits.
The mixing of the cold Labrador Current and the warm Gulf Stream waters creates the fog commonly found on the Grand Banks and is also a significant area for marine life and fishing. Other options like the Canaries Current (off NW Africa), Benguela Current (off SW Africa), and California Current (off West USA) are in different ocean basins or flow regimes.

232. Match List-I with List-II and select the correct answer using the code

Match List-I with List-II and select the correct answer using the code given below the Lists :

List-I (Continent)List-II (Desert)
A. Asia1. Atacama
B. Africa2. Mojave
C. North America3. Kalahari
D. South America4. Gobi

Code :

[amp_mcq option1=”A-4 B-2 C-3 D-1″ option2=”A-1 B-3 C-2 D-4″ option3=”A-4 B-3 C-2 D-1″ option4=”A-1 B-2 C-3 D-4″ correct=”option3″]

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The correct answer is C. This option correctly matches the continents with the specified deserts.
– Asia is home to the Gobi Desert.
– Africa contains the Kalahari Desert.
– North America includes the Mojave Desert.
– South America features the Atacama Desert.
The Gobi Desert is a cold desert located in China and Mongolia. The Kalahari Desert is a large semi-arid sandy savanna in Southern Africa. The Mojave Desert is a desert in the southwestern United States. The Atacama Desert is a desert plateau in South America, known as the driest non-polar desert in the world.

233. Khumbum monastery is situated in

Khumbum monastery is situated in

[amp_mcq option1=”India” option2=”Thailand” option3=”China” option4=”Japan” correct=”option3″]

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Khumbum monastery is situated in China.
Kumbum Monastery (also spelled Khumbum or Ta’er Monastery in Chinese) is a prominent Tibetan Buddhist monastery located in Huangzhong County, Qinghai Province, China. It is one of the most important monasteries of the Gelug school and holds historical significance as the birthplace of Je Tsongkhapa, the founder of the Gelug tradition. Although culturally Tibetan, its present-day location is within the administrative boundaries of China.
The other great monasteries of the Gelug school are Ganden, Sera, and Drepung (all historically in Tibet, now within China). Khumbum is renowned for its unique butter sculptures, frescoes, and barbola embroidery.

234. The continent having the largest area in the equatorial belt is

The continent having the largest area in the equatorial belt is

[amp_mcq option1=”Asia” option2=”South America” option3=”Africa” option4=”North America” correct=”option3″]

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C) Africa
The equatorial belt is the region lying near the Earth’s equator. To determine the continent with the largest area in this belt, we need to consider which continents straddle the equator and the extent of their landmass within approximately a few degrees of the equator.
– Africa is traversed by the equator through a vast central region, including parts of the Congo Basin, East Africa, and the Gulf of Guinea coast. A large portion of the African continent lies within the tropical and equatorial zones.
– South America is also traversed by the equator, notably through the Amazon basin in Brazil, Colombia, Ecuador, and Peru.
– Asia is crossed by the equator mainly through the Indonesian archipelago, which consists of numerous islands.
– North America does not have any significant landmass on the equator.
Comparing the land area within the equatorial belt, Africa has the largest continuous landmass situated around the equator, making it the continent with the largest area in this region.
Regions near the equator typically experience a tropical climate with high temperatures and high humidity throughout the year. The equatorial belt is home to extensive rainforest ecosystems, such as the Amazon in South America and the Congo in Africa.

235. Which of the following statements regarding landslides is/are correct?

Which of the following statements regarding landslides is/are correct?

  • 1. They are sudden and sporadic.
  • 2. They result when the slope is gentle.
  • 3. Mining activity is also responsible for landslides.

Select the correct answer using the code given below.

[amp_mcq option1=”1 and 2 only” option2=”1 and 3 only” option3=”3 only” option4=”1, 2 and 3″ correct=”option2″]

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B) 1 and 3 only
Let’s evaluate each statement regarding landslides:
1. Landslides can be sudden and catastrophic events, occurring without much warning, especially when triggered by intense rainfall or seismic activity. The term “sporadic” also fits, as they are not constant but happen at irregular intervals or locations. While some landslides (like creep) are slow, major destructive landslides are often sudden. This statement is generally correct in describing a common characteristic of significant landslides.
2. Landslides occur when the force pulling material downslope (primarily gravity) exceeds the shear strength of the slope material. This failure is more likely to occur on steeper slopes where the gravitational force parallel to the slope is greater. Gentle slopes are less susceptible to mass movements like landslides, although they can experience very slow forms of movement like creep. Thus, stating that they result when the slope is gentle is incorrect; they are more likely on steeper slopes.
3. Mining activities, such as excavation, blasting, removal of vegetation, changes in drainage patterns, and placement of waste piles, can destabilize slopes and significantly increase the risk of landslides. This is a recognised anthropogenic cause of landslides. This statement is correct.
Based on the analysis, statements 1 and 3 are correct, while statement 2 is incorrect.
Landslides are a type of mass wasting, which is the movement of rock, debris, or earth down a slope due to gravity. Triggers for landslides can be natural (rainfall, earthquakes, volcanic activity) or human-induced (mining, construction, deforestation, irrigation).

236. Which one among the following statements is not correct?

Which one among the following statements is not correct?

[amp_mcq option1=”The plane of separation between the crust and mantle is known as Mohorovicic discontinuity” option2=”The mantle contains more than two-third of the total material mass of the Earth” option3=”The mantle is composed of the heaviest materials of the Earth” option4=”The inner core of the Earth is in solid state” correct=”option3″]

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Statement C is incorrect. The mantle is not composed of the heaviest materials of the Earth. The inner and outer core are composed of the heaviest materials, primarily iron and nickel. The density increases from the crust through the mantle to the core.
Understanding the composition and characteristics of Earth’s interior layers (crust, mantle, core) is crucial for answering questions about geophysics.
Statement A is correct: The Mohorovicic discontinuity (Moho) is the boundary between the Earth’s crust and the mantle. Statement B is correct: The mantle constitutes about 84% of Earth’s volume and around 67% of its mass. Statement D is correct: Due to immense pressure, the inner core is in a solid state despite extremely high temperatures.

237. Which one among the following is a cold current in the Atlantic Ocean?

Which one among the following is a cold current in the Atlantic Ocean?

[amp_mcq option1=”Gulf Stream” option2=”Benguela Current” option3=”Peru Current” option4=”Brazil Current” correct=”option2″]

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Ocean currents are large-scale movements of water. Cold currents originate in polar regions and flow towards the equator, or are upwellings of deep, cold water. The Benguela Current is a cold current flowing northwards along the west coast of Southern Africa in the South Atlantic Ocean.
Ocean currents significantly influence global climate patterns, weather, and marine ecosystems. They are broadly classified as warm or cold currents based on their temperature relative to the surrounding water.
The Gulf Stream and Brazil Current are warm currents in the Atlantic Ocean. The Peru Current (or Humboldt Current) is a cold current, but it is located in the Pacific Ocean along the western coast of South America.

238. Which one among the following is a mechanically formed sedimentary

Which one among the following is a mechanically formed sedimentary rock:

[amp_mcq option1=”Salt rock” option2=”Limestone” option3=”Sandstone” option4=”Gypsum” correct=”option3″]

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Mechanically formed sedimentary rocks, also known as clastic sedimentary rocks, are composed of fragments (clasts) of pre-existing rocks that have been eroded, transported, deposited, and then cemented together. Sandstone is a classic example of a clastic sedimentary rock, formed from cemented sand grains. Salt rock (halite) and Gypsum are typically chemical sedimentary rocks formed by evaporation and precipitation of minerals from water. Limestone can be chemical or organic (biogenic), but sandstone is definitively mechanically formed.
Sandstone is a clastic (mechanically formed) sedimentary rock composed of rock fragments (sand grains).
Clastic sedimentary rocks are classified based on the size of the clasts (fragments). Examples include conglomerate (rounded pebbles/cobbles), breccia (angular pebbles/cobbles), sandstone (sand-sized grains), siltstone (silt-sized grains), and shale (clay-sized grains).

239. Why does the Earth assume the shape of an oblate ellipsoid?

Why does the Earth assume the shape of an oblate ellipsoid?

[amp_mcq option1=”The Earth’s rotation causes the Earth to bulge slightly at the equator and flatten at the poles” option2=”The Earth’s rotation causes the Earth to bulge slightly at the poles and flatten at the equator” option3=”The Earth’s revolution causes the Earth to bulge slightly at the equator and flatten at the poles” option4=”The Earth’s revolution causes the Earth to bulge slightly at the poles and flatten at the equator” correct=”option1″]

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The Earth is not a perfect sphere but takes the shape of an oblate ellipsoid (or oblate spheroid), which means it is slightly flattened at the poles and bulges at the equator. This shape is a result of the Earth’s rotation. The centrifugal force generated by rotation is greatest at the equator because the linear velocity is highest there. This outward force counteracts gravity more effectively at the equator, causing the material there to bulge outwards, while the poles, experiencing minimal centrifugal force, are slightly flattened.
The Earth’s oblate ellipsoid shape (bulging at the equator, flattened at the poles) is primarily caused by the centrifugal force resulting from its rotation.
The difference between the equatorial diameter and the polar diameter is about 43 kilometers (approximately 12,756 km vs 12,714 km). This difference is relatively small compared to the overall size of the Earth, but it is significant enough for accurate measurements and understanding of Earth’s gravity field.

240. What do you call the total system of parallels and meridians that form

What do you call the total system of parallels and meridians that form a network of intersecting lines?

[amp_mcq option1=”Geographic pattern” option2=”Geographic arrangement” option3=”Geographic grid” option4=”Geographic polygon” correct=”option3″]

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The total system formed by the intersecting network of parallels of latitude and meridians of longitude on a map or globe is called a geographic grid. This grid allows for the precise location of any point on the Earth’s surface using geographic coordinates (latitude and longitude).
The network formed by parallels (lines of latitude) and meridians (lines of longitude) is known as the geographic grid.
Parallels run east-west and measure distance north or south of the equator (latitude). Meridians run north-south from pole to pole and measure distance east or west of the Prime Meridian (longitude).
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