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Indian and World Geography

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Question 81Question →

Regarding the physiographic divisions and structural relief features of India, which of the following statements are correct?

Select all that apply

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Answer: The Western Ghats form a continuous relief wall of higher average elevation compared to the discontinuous Eastern Ghats, and are crossed primarily through natural passes such as Thalghat, Bhorghat, and Palghat.; The Bhabar belt along the immediate southern foothills of the Shiwaliks consists of coarse pebble deposits where streams disappear underground owing to very high porosity.; The Malabar Coast of southwestern India features prominent coastal lagoons and backwaters locally known as 'Kayals', whereas the Coromandel Coast along the east is dominated by expansive deltaic plains.

Answer

The correct statements are those describing the continuity and passes of the Western Ghats, the high-porosity pebble composition of the Bhabar belt, and the contrast between the western Malabar backwaters ('Kayals') and eastern Coromandel deltas.
The statements highlighting the continuity and elevation of the Western Ghats (with Thalghat, Bhorghat, and Palghat passes), the coarse porosity of the Bhabar belt causing underground stream sinking, and the occurrence of 'Kayals' on the Malabar Coast versus river deltas on the Coromandel Coast are all geomorphologically correct.

Step-by-Step Solution

1
Evaluate Western Ghats relief and continuity characteristics.
Western Ghats form a continuous escarpment with an average elevation of 900–1600 meters, traversable via key passes like Thalghat, Bhorghat, and Palghat. This statement is accurate.
Topographic continuity and pass locations correctly distinguish the Western Ghats from the eroded Eastern Ghats.
2
Analyze the northern plain morpho-tectonic zone known as Bhabar.
The Bhabar lies adjacent to the Shiwalik foothills, containing coarse gravel and alluvial fans where streams submerge. This statement is accurate.
High porosity of coarse boulder deposits causes surface water disappearance characteristic of the Bhabar zone.
3
Assess the geographic distribution of Karewa landforms.
Karewas are lacustrine deposits confined to the Kashmir Valley in the Northwestern Himalayas, not the Eastern Himalayas. This statement is false.
Misattributing Karewa terraces to the Eastern Himalayas violates regional physiographic distribution facts.
4
Compare coastal plain physiographic features between Malabar and Coromandel coasts.
Malabar Coast features unique backwaters ('Kayals'), whereas Coromandel Coast is dominated by extensive prograding river deltas (Mahanadi, Godavari, Krishna, Kaveri). This statement is accurate.
Distinct coastal geomorphology differentiates the narrow western submergent/emergent coasts from wide eastern deltaic plains.

Key Concept

Physiographic divisions, mountain pass locations, plain zonation (Bhabar/Terai/Bangar/Khadar), and coastal geomorphology of India.
Question 82Question →

Consider the following statements regarding major maritime chokepoints in global economic geography:

1. The Strait of Malacca connects the Indian Ocean to the South China Sea, serving as a primary sea lane for energy supplies entering East Asia.
2. The Bab-el-Mandeb Strait connects the Red Sea to the Gulf of Aden, acting as a strategic link on the maritime trade route between Europe and Asia via the Suez Canal.
3. The Strait of Hormuz connects the Persian Gulf to the Gulf of Oman and is recognized as the world's most critical oil transit chokepoint.

Which of the statements given above are correct?

Show answer & explanation

Answer: 1, 2 and 3

Answer

All three statements (1, 2, and 3) are correct.
All three statements accurately define major global maritime trade bottlenecks. The Strait of Malacca links the Indian Ocean to the South China Sea; Bab-el-Mandeb links the Red Sea to the Gulf of Aden; and the Strait of Hormuz links the Persian Gulf to the Gulf of Oman, handling the highest volume of seaborne oil trade globally.

Step-by-Step Solution

1
Analyze Statement 1
Statement 1 is correct. The Strait of Malacca is located between the Malay Peninsula and the Indonesian island of Sumatra, connecting the Indian Ocean and the South China Sea. It is a key maritime corridor for fuel and manufactured goods bound for East Asian markets.
Geographical location and economic trade flows match official oceanographic data.
2
Analyze Statement 2
Statement 2 is correct. The Bab-el-Mandeb Strait lies between Yemen on the Arabian Peninsula and Djibouti/Eritrea in the Horn of Africa. It links the Red Sea to the Gulf of Aden and forms part of the maritime highway connecting Asia to Europe via the Suez Canal.
Locational geography verifies its role in European-Asian trade transit.
3
Analyze Statement 3
Statement 3 is correct. The Strait of Hormuz lies between Oman and Iran, connecting the Persian Gulf with the Gulf of Oman and the Arabian Sea. It handles approximately one-fifth of global petroleum consumption transit daily, making it the premier global oil chokepoint.
Economic energy statistics confirm its role as the world's chief oil transit channel.

Key Concept

Strategic Maritime Chokepoints in World Trade and Economic Geography
Question 83Question →

Arrange the following natural vegetation types of India in ascending order based on their typical annual rainfall requirements:

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Answer

The correct ascending order based on annual rainfall requirements is: Tropical Thorn and Scrub Forests (< 50 cm50\text{ cm}), Tropical Dry Deciduous Forests (70–100 cm70\text{--}100\text{ cm}), Tropical Moist Deciduous Forests (100–200 cm100\text{--}200\text{ cm}), and Tropical Wet Evergreen Forests (> 250 cm250\text{ cm}).
In Indian physical geography, annual rainfall is the primary determinant of natural vegetation boundaries. The rainfall thresholds increase from Tropical Thorn and Scrub Forests (<50 cm< 50\text{ cm}) to Tropical Dry Deciduous Forests (70–100 cm70\text{--}100\text{ cm}), followed by Tropical Moist Deciduous Forests (100–200 cm100\text{--}200\text{ cm}), and finally Tropical Wet Evergreen Forests (>250 cm> 250\text{ cm}).

Step-by-Step Solution

1
Identify the minimum annual rainfall threshold for Tropical Thorn and Scrub Forests.
Rainfall threshold is less than 50 cm50\text{ cm} per year.
Vegetation consists of acacias, euphorbias, and cacti adapted to low moisture levels.
2
Determine the climatic rainfall range for Tropical Dry Deciduous Forests.
Rainfall range is between 70 cm70\text{ cm} and 100 cm100\text{ cm} per year.
These forests shed leaves during dry seasons and represent an intermediate moisture regime.
3
Determine the precipitation requirement for Tropical Moist Deciduous Forests.
Rainfall range is between 100 cm100\text{ cm} and 200 cm200\text{ cm} per year.
Dominant species like Teak and Sal require moderate to heavy monsoon rainfall.
4
Identify the rainfall requirement for Tropical Wet Evergreen Forests.
Rainfall threshold exceeds 250 cm250\text{ cm} per year with high relative humidity.
Dense multi-layered canopy forests require continuous moisture availability.
5
Sequence the items from the lowest to highest precipitation threshold.
Sequence: Tropical Thorn and Scrub Forests →\rightarrow Tropical Dry Deciduous Forests →\rightarrow Tropical Moist Deciduous Forests →\rightarrow Tropical Wet Evergreen Forests.
Precipitation increases systematically across these forest ecological zones.

Key Concept

Climatic Control of Natural Vegetation Distribution in India
Question 84Question →

Match the following pre-monsoon weather phenomena and local winds of India (List-I) with their primary regions or associated features (List-II):

Click a left item, then click its matching right item

Items

Loo
Mango Showers
Kalbaisakhi
Blossom Shower

Matches

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Answer

Loo matches with hot, dry summer winds of Northern India; Mango Showers match with pre-monsoon rains aiding mango ripening in Kerala/Karnataka; Kalbaisakhi matches with severe thunderstorms in West Bengal/Assam; Blossom Shower matches with coffee-blossoming showers in Karnataka.
Each local wind/shower is correctly matched to its defined geographical area and agricultural/meteorological effect: Loo corresponds to the hot, dry winds of the Northern Plains, Mango Showers assist mango ripening in Kerala and Karnataka, Kalbaisakhi represents severe spring storms in West Bengal and Assam, and Blossom Showers benefit coffee plants in Karnataka.

Step-by-Step Solution

1
Identify the characteristic features of Loo.
Loo is known as a hot, dry, scorching wind blowing across northern Indian plains in summer.
Matching thermal local winds of North India.
2
Identify Mango Showers and their agricultural significance.
Mango Showers are pre-monsoon rains near the end of summer in coastal Karnataka and Kerala that assist mango ripening.
Connecting local rainfall names with specific crop impacts and regions.
3
Identify Kalbaisakhi and its region.
Kalbaisakhi refers to thunderstorm activity in Bengal and Assam during spring.
Distinguishing regional pre-monsoon storm nomenclature.
4
Identify Blossom Shower.
Blossom showers bring early rains beneficial to coffee plantations in Karnataka.
Differentiating coffee-blossoming rains from general pre-monsoon showers.

Key Concept

Pre-monsoon local winds and rainfall phenomena of India
Question 85Question →

With reference to Köppen's climatic classification of the Indian subcontinent, consider the following statements:

1. The Coromandel Coast of Tamil Nadu is categorized under the 'As' climate type, where the dry season occurs during the summer months.
2. The rain-shadow zone extending to the east of the Western Ghats is classified under the 'BShw' (semi-arid steppe) climate type.
3. The Gangetic Plain of northern India is designated under the 'Amw' climate type due to severe winter rainlessness and intense summer precipitation.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 2 only

Answer

Statements 1 and 2 only are correct.
According to Köppen's climatic scheme for India:
- 'As' (Monsoon with dry summer) corresponds to the Coromandel Coast of Tamil Nadu, which receives its principal rain during winter from the North-East monsoon.
- 'BShw' (Semi-arid steppe) corresponds to the rain-shadow belt east of the Western Ghats, northern Gujarat, and parts of Rajasthan.
- 'Cwg' (Monsoon with dry winter) corresponds to the Ganga plain, eastern Rajasthan, and northern Madhya Pradesh.
- 'Amw' (Monsoon with short dry season) corresponds to the Western Coastal Plain south of Goa.
Therefore, statements 1 and 2 are accurate, while statement 3 is incorrect.

Step-by-Step Solution

1
Analyze Statement 1 regarding the climate of the Coromandel Coast.
Köppen designates 'As' as a tropical monsoon climate with a dry summer. The Coromandel Coast receives most of its rainfall from the retreating North-East monsoon during winter, making summer relatively dry. Statement 1 is correct.
The coastal belt of Tamil Nadu experiences seasonal rainfall reversal characteristic of the 'As' code.
2
Analyze Statement 2 regarding the climate of the Western Ghats rain-shadow area.
The interior leeward side of the Western Ghats receives scanty rainfall and experiences semi-arid conditions, correctly classified under 'BShw' (semi-arid steppe). Statement 2 is correct.
BShw represents low-latitude semi-arid steppe environments created by orographic rain-shadow effects.
3
Analyze Statement 3 regarding the climate classification of the Gangetic Plain.
The Gangetic Plain is classified as 'Cwg' (monsoon type with dry winter), not 'Amw'. 'Amw' represents the tropical monsoon climate with a short dry season along the Malabar Coast. Statement 3 is incorrect.
Confusing the Gangetic Plain's 'Cwg' code with the Western Coast's 'Amw' code is a common taxonomic error.

Key Concept

Köppen's Climate Classification of India
Question 86Question →

Among the following capital cities, which one is located at the furthest north latitude?

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Answer: Moscow

Answer

Moscow is located at the furthest north latitude among the choices.
Moscow lies at approximately 55°45' N latitude, making it the northernmost capital among the options provided.

Step-by-Step Solution

1
Identify the approximate northern latitude for each capital city.
Moscow: 55°45' N, Berlin: 52°31' N, London: 51°30' N, Paris: 48°51' N.
Determining exact or approximate geographical coordinates enables direct spatial comparison.
2
Compare the latitude values to determine which city lies highest in the Northern Hemisphere.
Moscow (55°45' N) > Berlin (52°31' N) > London (51°30' N) > Paris (48°51' N).
In the Northern Hemisphere, a higher numerical latitude value corresponds to a position closer to the North Pole.

Key Concept

Latitudinal Locational Geography of World Cities
Question 87Question →

Match the major Indian rivers listed in List I with their corresponding tributaries in List II.

Click a left item, then click its matching right item

Items

Godavari
Krishna
Yamuna
Indus

Matches

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Answer

Godavari pairs with Pranhita, Krishna pairs with Tungabhadra, Yamuna pairs with Giri, and Indus pairs with Zanskar.
Godavari matches with Pranhita because Pranhita is its largest tributary formed by the confluence of the Wardha, Wainganga, and Penganga. Krishna matches with Tungabhadra, its principal southern tributary. Yamuna matches with Giri, a significant Himalayan tributary in Himachal Pradesh. Indus matches with Zanskar, which joins the Indus River in Ladakh.

Step-by-Step Solution

1
Analyze each main river in List I and recall its major river basin tributaries.
Godavari connects to Pranhita; Krishna connects to Tungabhadra; Yamuna connects to Giri; Indus connects to Zanskar.
Connecting each river system to its correct feeder stream confirms geographical knowledge of Indian drainage networks.

Key Concept

Drainage basins and tributaries of major Indian river systems
Question 88Question →

With reference to the physiographic and relief features of Peninsular India, consider the following statements:

1. The Javadi Hills and Shevaroy Hills form prominent detached hill ranges in the southeastern part of the Eastern Ghats.
2. The Palghat Gap is a major relief break in the Western Ghats separating the Nilgiri Hills in the north from the Anaimalai Hills in the south.
3. The Western Coastal Plain is significantly broader than the Eastern Coastal Plain and is dominated by large prograding river deltas.

Which of the statements given above is/are correct?

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Answer: 1 and 2 only

Answer

Statements 1 and 2 are correct. Statement 3 is incorrect because the Eastern Coastal Plain is broader and features extensive deltas formed by major rivers such as the Mahanadi, Godavari, Krishna, and Kaveri, whereas the Western Coastal Plain is relatively narrow and characterized by estuaries and backwaters (kayals).
Statements 1 and 2 are geomorphologically accurate. The Javadi and Shevaroy hills constitute distinct offline ridges of the south-eastern Eastern Ghats in Tamil Nadu. The Palghat Gap acts as a major tectonic/erosional trough dividing the Nilgiri hills from the Anaimalai range. Statement 3 is false because the Eastern Coastal Plain is wider with well-developed river deltas, while the Western Coastal Plain is narrow and estuarine.

Step-by-Step Solution

1
Evaluate Statement 1 regarding the Eastern Ghats relief features.
Statement 1 is correct.
The Eastern Ghats are discontinuous and dissected by major Peninsular rivers. Prominent hill groups in Tamil Nadu, such as the Javadi, Shevaroy, Kalrayan, and Pachaimalai hills, form distinct southeastern components of this relief system.
2
Evaluate Statement 2 regarding the continuity and gaps of the Western Ghats.
Statement 2 is correct.
The Western Ghats are generally continuous but breached by major gaps such as the Palghat Gap (Palakkad Gap), which forms a low mountain pass between the Nilgiri Block to the north and the Anaimalai/Palani Hills to the south.
3
Evaluate Statement 3 comparing the Western and Eastern Coastal Plains.
Statement 3 is incorrect.
The Eastern Coastal Plain is a broad emergent coast featuring massive river deltas (Mahanadi, Godavari, Krishna, Kaveri). In contrast, the Western Coastal Plain is predominantly a narrow submerged coast characterized by steep gradients, estuaries, and lagoonal formations rather than broad deltaic plains.

Key Concept

Physiographic contrasting features between Western Ghats/Coastal Plains and Eastern Ghats/Coastal Plains of Peninsular India.
Estimated Time:2m 0s
Question 89Question →

During the months of October to December, coastal Tamil Nadu and adjacent regions receive a significant portion of their total annual rainfall. Which of the following wind systems is primarily responsible for bringing this winter precipitation to the Coromandel Coast?

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Answer: North-East Monsoon winds

Answer

North-East Monsoon winds
The North-East Monsoon winds blow from the land area of northeastern India toward the ocean. As they cross the Bay of Bengal, they absorb moisture and cause heavy rainfall along the Coromandel Coast of Tamil Nadu between October and December.

Step-by-Step Solution

1
Identify the geographical region and seasonal timing mentioned in the stem.
The target region is the Coromandel Coast (Tamil Nadu) and the season is winter (October to December).
Rainfall patterns in India vary significantly across regions and seasons due to changing wind regimes.
2
Analyze the prevailing wind directions and moisture sources during the autumn/winter transition.
As the apparent position of the Sun shifts southwards, high pressure develops over Northern India and winds blow northeast to southwest (North-East Monsoon).
These winds cross the Bay of Bengal, pick up moisture, and strike the eastern coast of Tamil Nadu.
3
Select the option that correctly describes this wind system.
North-East Monsoon winds are the primary mechanism for winter rainfall on the Coromandel Coast.
This matches the seasonal wind reversal phenomenon of the Indian subcontinent.

Key Concept

North-East Monsoon and Seasonal Rainfall Distribution
Question 90Question →

Arrange the following strategic maritime choke points and waterways in the correct sequence from West to East based on their geographical location (longitude):

Drag items to arrange them in the correct order

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Answer

The correct West-to-East sequence of these maritime choke points is: Strait of Gibraltar → Suez Canal → Strait of Hormuz → Strait of Malacca.
Moving from West to East across the Eastern and Western Hemispheres: The Strait of Gibraltar is situated in the Western Hemisphere at ~5°W. Moving eastward into the Eastern Hemisphere, the Suez Canal is located at ~32°E, followed by the Strait of Hormuz at ~56°E in the Middle East, and finally the Strait of Malacca at ~101°E in Southeast Asia.

Step-by-Step Solution

1
Determine the longitude of the Strait of Gibraltar
Strait of Gibraltar lies at approximately 5°21' W longitude, making it the westernmost feature among the choices.
It separates Spain and Morocco at the western entry of the Mediterranean Sea.
2
Determine the longitude of the Suez Canal
The Suez Canal lies at approximately 32°20' E longitude.
It crosses the Isthmus of Suez in Egypt to link the Mediterranean Sea with the Red Sea.
3
Determine the longitude of the Strait of Hormuz
The Strait of Hormuz lies further east at approximately 56°15' E longitude.
It acts as the exit point of the Persian Gulf into the Gulf of Oman.
4
Determine the longitude of the Strait of Malacca
The Strait of Malacca is the easternmost feature at approximately 101°20' E longitude.
It lies in Southeast Asia between Sumatra and the Malay Peninsula.

Key Concept

Locational analysis of major global maritime choke points and waterways along longitudinal lines.
Question 91Question →

With reference to the soil types and natural vegetation in India, consider the following statements:

1. Black soils (Regur) develop deep cracks during the dry season, leading to a phenomenon known as 'self-ploughing' and possess high moisture-retention capacity.
2. Red soils owe their characteristic color to a wide diffusion of iron in crystalline and metamorphic rocks, appearing yellow when in a hydrated form.
3. Tropical Thorn Forests thrive in regions experiencing annual rainfall exceeding 150 cm150\text{ cm} accompanied by high relative humidity.
4. Laterite soils are inherently rich in nitrogen, soluble plant nutrients, and lime, making them naturally suitable for intensive paddy cultivation without chemical fertilizers.

Which of the statements given above are correct?

Show answer & explanation

Answer: 1 and 2 only

Answer

1 and 2 only
The correct answer includes statements 1 and 2. Regur soils exhibit swelling-shrinking properties causing self-ploughing, while red soils obtain their red appearance from iron oxide diffusion and yellow tint upon hydration. Statements 3 and 4 are false due to incorrect precipitation limits for thorn vegetation and inaccurate nutrient profiles for intensely leached laterite soils.

Step-by-Step Solution

1
Evaluate Statement 1 regarding Black Soil (Regur).
Statement 1 is correct.
Black soil is highly argillaceous (clayey), expands when wet, and contracts upon drying to form deep wide cracks. This aids oxygenation ('self-ploughing') and retains moisture for prolonged periods.
2
Evaluate Statement 2 regarding Red Soil composition.
Statement 2 is correct.
Red soil develops on crystalline igneous and metamorphic rocks under low rainfall conditions. The ferric oxides impart a red shade, which turns yellow when hydrated.
3
Evaluate Statement 3 regarding Tropical Thorn Forests.
Statement 3 is incorrect.
Tropical Thorn Forests are characteristic of semi-arid areas with low annual rainfall (less than 70 cm70\text{ cm} or 50 cm50\text{ cm}), such as parts of Rajasthan, Gujarat, and dry interior Deccan plateau.
4
Evaluate Statement 4 regarding Laterite Soil fertility.
Statement 4 is incorrect.
Laterite soils result from intense leaching due to heavy tropical rains. Organic matter, nitrogen, phosphate, and calcium are washed away, leaving the soil poor in nutrients and high in iron oxides and aluminum.

Key Concept

Soil formation processes and vegetation climatic thresholds in India
Estimated Time:2m 0s
Question 92Question →

Arrange the following major ocean floor relief zones in their correct sequence starting from the coastline moving seaward towards the deep ocean basin:

Drag items to arrange them in the correct order

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Answer

The correct seaward sequence of ocean floor relief features from the coastline to the deep ocean basin is Continental Shelf, followed by Continental Slope, Continental Rise, and finally Abyssal Plain.
The ocean basin relief transitions systematically from the continent towards the deep ocean. Moving seaward from the coast, one encounters the shallow Continental Shelf, followed by the sharply inclined Continental Slope, then the thick sediment fan of the Continental Rise, and ultimately the broad, flat Abyssal Plain.

Step-by-Step Solution

1
Identify the feature adjacent to the land boundary.
The Continental Shelf is the submerged extension of the continent directly adjoining the coast.
It represents the shallowest part of the ocean margin.
2
Determine the transition zone from shallow shelf to deep ocean.
The Continental Slope begins at the shelf break and plunges steeply downward.
It marks the boundary between continental crust and oceanic region.
3
Identify the depositional zone at the base of the slope.
The Continental Rise forms at the base where thick sediment fans merge.
It eases the gradient between the steep slope and the level ocean floor.
4
Locate the ultimate flat deep-sea floor.
The Abyssal Plain extends across vast distances of the deep ocean basin.
It sits at depths of 3,000 to 6,000 meters, representing the deep oceanic floor.

Key Concept

Ocean floor relief divisions and continental margin morphometry
Question 93Question →

Match the atmospheric pressure systems and circulation features associated with the Indian monsoon mechanism listed in List-I with their corresponding meteorological characteristics and roles described in List-II. Which of the following represents the correct set of pairings?

Click a left item, then click its matching right item

Items

Mascarene High
Tibetan Anticyclone
Somali Jet (Findlater Jet)
Tropical Easterly Jet (TEJ)

Matches

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Answer

Mascarene High pairs with the semi-permanent subtropical high-pressure cell near 30°S in the southern Indian Ocean; Tibetan Anticyclone pairs with the warm-core upper-tropospheric high-pressure system over the plateau; Somali Jet pairs with the low-level cross-equatorial wind stream off East Africa; and Tropical Easterly Jet pairs with the upper-tropospheric wind stream at 13°N latitude.
The correct pairings accurately link each monsoon circulation component to its distinct altitude layer and physical role: the Southern Hemisphere Mascarene High drives low-level cross-equatorial flow; the Tibetan Anticyclone provides upper-level divergence; the Somali Jet serves as the low-level moisture highway across the Arabian Sea; and the Tropical Easterly Jet maintains upper-tropospheric easterly momentum over peninsular India.

Step-by-Step Solution

1
Identify the oceanic source region of the southwest monsoon wind vectors.
The Mascarene High is identified as the high-pressure region near 30°S in the southern Indian Ocean.
It creates the pressure gradient necessary to drive cross-equatorial trade winds towards South Asia.
2
Analyze upper-tropospheric heat-engine mechanisms over Eurasia.
The Tibetan Anticyclone is identified as the warm-core upper-tropospheric high resulting from plateau heating.
Sensible heating of the elevated plateau and condensation latent heat produce strong upper-air outflow.
3
Determine the low-level oceanic moisture transport jet.
The Somali Jet is recognized as the low-level coastal jet off East Africa.
Topographic steering by African highlands intensifies cross-equatorial winds feeding the Arabian Sea branch.
4
Correlate upper-level easterly jet streams with peninsular precipitation dynamics.
The Tropical Easterly Jet is matched with the 13°N upper-tropospheric easterly flow.
The outflow from the Tibetan high establishes this upper easterly jet, which promotes surface convergence and rain-bearing depressions over India.

Key Concept

Indian Monsoon Atmospheric Driving Mechanisms and Pressure Systems
Estimated Time:2m 0s
Question 94Question →

South America consists of twelve sovereign nations, most of which have coastlines bordering major ocean bodies. Which of the following countries in South America is landlocked?

Show answer & explanation

Answer: Bolivia

Answer

Bolivia is a landlocked country in South America.
Bolivia is bounded by land on all sides and does not possess direct territorial access to any ocean, making it one of the two landlocked countries in South America alongside Paraguay.

Step-by-Step Solution

1
Analyze the geographical features and territorial boundaries of South American nations.
South America has only two landlocked countries: Bolivia and Paraguay.
All other sovereign states on the South American continent possess direct access to either the Pacific or Atlantic Oceans.

Key Concept

Landlocked Countries of South America
Question 95Question →

Match the mountain passes and relief gaps of India in List-I with their corresponding physiographic locations or structural ranges in List-II:

Click a left item, then click its matching right item

Items

Diphu Pass
Lipulekh Pass
Banihal Pass
Shencottah Gap

Matches

Show answer & explanation

Answer

The correct matches are: Diphu Pass matches with the Tri-junction of India, China, and Myanmar in the Purvanchal / Eastern Himalayas; Lipulekh Pass matches with the Kumaon Himalayas connecting Uttarakhand with the Tibetan Plateau; Banihal Pass matches with the Pir Panjal Range in the Lesser Himalayas; and Shencottah Gap matches with the Southern Western Ghats connecting Kollam with Madurai.
Each pass correctly maps to its exact physiographic range or regional location: Diphu Pass is located at the India-China-Myanmar tri-junction in Arunachal Pradesh; Lipulekh Pass belongs to the Kumaon Himalayas in Uttarakhand; Banihal Pass spans the Pir Panjal Range in Jammu and Kashmir; and Shencottah Gap cuts through the southern Western Ghats between Kerala and Tamil Nadu.

Step-by-Step Solution

1
Identify the geographical region of Diphu Pass
Diphu Pass lies on the McMahon Line at the eastern border of Arunachal Pradesh, serving as the tri-junction between India, China, and Myanmar.
Understanding strategic Himalayan pass locations along international borders.
2
Determine the physiographic association of Lipulekh Pass
Lipulekh Pass is situated in the Pithoragarh district of Uttarakhand within the Kumaon Himalayas, serving as a gateway for the Kailash-Manasarovar Yatra.
Differentiating passes across Himalayan longitudinal sectors.
3
Locate Banihal Pass within the mountain ranges of Jammu & Kashmir
Banihal Pass cuts across the Pir Panjal Range of the Middle/Lesser Himalayas at an elevation of approximately 2,832 meters.
Identifying major mountain gaps in the Northwestern Himalayas.
4
Analyze the structural gap of Shencottah in Peninsular India
Shencottah Gap is located south of the Palghat Gap between the Cardamom Hills and Agasthyamalai Hills in the southern Western Ghats, facilitating inter-state transit between Kerala and Tamil Nadu.
Distinguishing Peninsular mountain passes and structural breaks.

Key Concept

Himalayan and Peninsular Relief Features and Passes of India
Question 96Question →

Consider the following statements regarding the factors influencing ocean surface salinity across different global zones:

1. The highest ocean surface salinity is recorded at the equator due to maximum solar insolation and intense evaporation.
2. Enclosed seas in arid subtropical zones, such as the Red Sea, exhibit significantly higher salinity than open ocean waters at identical latitudes.
3. Massive river runoff combined with low atmospheric evaporation results in low surface salinity levels in the Baltic Sea.

Which of the statements given above are correct?

Show answer & explanation

Answer: 2 and 3 only

Answer

Statements 2 and 3 are correct, while statement 1 is incorrect.
The combination stating statements 2 and 3 are correct is valid because equatorial surface salinity is diluted by heavy convective precipitation, whereas subtropical enclosed seas record high salinity due to high evaporation, and subpolar seas with abundant river inflow exhibit low salinity.

Step-by-Step Solution

1
Evaluate Statement 1 regarding equatorial salinity
Statement 1 is incorrect.
Although equatorial regions receive high solar insolation, intense cloud cover and heavy daily rainfall (precipitation exceeding evaporation) lower the surface salinity to around 35 ppt, whereas maximum salinity (over 37-38 ppt) occurs in the subtropical belt (20°-30° N/S) where high evaporation coincides with clear skies and sinking dry air.
2
Evaluate Statement 2 regarding enclosed seas in subtropical climates
Statement 2 is correct.
Enclosed or semi-enclosed seas located in hot, arid subtropical zones (such as the Red Sea and Persian Gulf) experience extremely high evaporation and minimal freshwater river influx, resulting in surface salinities reaching 41 ppt or higher.
3
Evaluate Statement 3 regarding high-latitude enclosed seas
Statement 3 is correct.
The Baltic Sea receives massive freshwater input from numerous rivers and experiences low temperatures with minimal evaporation, maintaining exceptionally low salinity levels (often below 10 ppt).

Key Concept

Ocean Surface Salinity Distribution and Influencing Factors
Question 97Question →

Consider the following statements regarding the phenomenon of a 'break' during the Indian summer monsoon season:

1. During a monsoon break, rainfall decreases significantly over most of the plains of India, while heavy precipitation concentrates along the Himalayan foothills.
2. A monsoon break occurs when the monsoon trough shifts northward from its normal position toward the foot of the Himalayas.
3. The occurrence of monsoon breaks in July and August is primarily driven by the migration of the Inter-Tropical Convergence Zone (ITCZ) into the Southern Hemisphere.

Which of the statements given above are correct?

Select all that apply

Show answer & explanation

Answer: Statement 1 and Statement 2

Answer

Statements 1 and 2 are correct.
The correct answer includes Statement 1 and Statement 2. During July and August, when the monsoon trough shifts from its normal position over the Indo-Gangetic plain to the foot of the Himalayas, rainfall ceases over central and northern plains, while heavy downpours occur along the slopes of the Himalayas.

Step-by-Step Solution

1
Analyze Statement 1
During a break period, dry conditions prevail over northern and central Indian plains, but heavy rainfall shifts to the Himalayan foothills, causing floods in rivers like the Ganga tributaries.
Statement 1 is factually correct.
2
Analyze Statement 2
The trough axis moves northward to the foot of the Himalayas, leading to rainfall over the mountains while suppressing convective activity over central India.
Statement 2 correctly identifies the synoptic cause of the break.
3
Analyze Statement 3
In peak summer (July-August), the ITCZ is located over Northern India (20∘N−25∘N20^\circ\text{N}-25^\circ\text{N}). Breaks are intra-seasonal oscillations, not caused by Southern Hemisphere retreat of the ITCZ.
Statement 3 is incorrect.

Key Concept

Break in the Monsoon
Question 98Question →

Regarding the pedological properties, natural vegetation dynamics, and ecological distributions across India, which of the following statements are correct?

Select all that apply

Show answer & explanation

Answer: Peaty soils in coastal Kerala (locally termed Kari soils) are characterized by heavy organic matter accumulation, high acidity, and formation under submerged anaerobic conditions.; Shola forests occurring above 1,500 meters altitude in the Nilgiris and Anaimalai hills represent stunted temperate evergreen forest patches set within rolling grasslands.

Answer

The correct statements are the ones describing the anaerobic, highly acidic peaty Kari soils of coastal Kerala and the high-altitude montane temperate Shola forest patches of the Nilgiri and Anaimalai ranges.
The statement regarding peaty soils accurately captures the formation of Kari soils in coastal Kerala under submerged anaerobic conditions resulting in rich humus and high acidity. Additionally, the statement about Shola forests correctly describes the unique montane temperate evergreen patches nestled within high-altitude grasslands of the Nilgiris and Anaimalai hills.

Step-by-Step Solution

1
Evaluate the statement on peaty soils (Kari soils) of coastal Kerala.
Peaty soils form in waterlogged, humid coastal regions with rich vegetation growth, creating heavy organic matter deposition (up to 40-50%) and high soil acidity due to iron sulfide oxidization under anaerobic conditions.
Validates the geochemical and hydrological conditions governing Kerala peaty soil formation.
2
Evaluate the statement regarding Tropical Wet Evergreen forest canopy and species composition.
Evergreen forests of the Western Ghats feature intense biodiversity with layered stratifications rather than mono-species dominance.
Exposes the misconception that wet evergreen biomes exhibit single-species stands.
3
Evaluate the statement on Shola vegetation in Southern India.
In the Nilgiri, Palani, and Anaimalai ranges above 1,500 meters, montane vegetation manifests as stunted temperate evergreen forests (Sholas) in valleys, surrounded by subtropical grassland ecosystems.
Confirms the elevational and topographic distribution of Shola vegetation.
4
Evaluate the statement on Black soil composition and moisture retention mechanisms.
Black soil (Regur) moisture retention and deep cracking (self-ploughing) stem from fine-grained montmorillonite clay swell-shrink dynamics in semi-arid basaltic trap regions, not coarse quartz illuviation under heavy rainfall.
Corrects the mineralogical and climatic misattribution of regur soil physics.

Key Concept

Pedological and Ecological Characteristics of Indian Soils and Natural Vegetation
Estimated Time:2m 0s
Question 99Question →

Consider the following statements regarding climatic phenomena and monsoon distribution across India:

1. Kalbaisakhi are violent pre-monsoon thunderstorms originating over the Chota Nagpur Plateau that bring localized rainfall to West Bengal and Assam.
2. The leeward rain-shadow zone of the Western Ghats leads to the development of a semi-arid steppe climate (BShwBShw under Köppen's classification) across parts of interior Karnataka and eastern Maharashtra.
3. The Shillong Plateau receives extraordinarily heavy rainfall during the monsoon season because its funnel-shaped relief traps moisture-laden winds from the Arabian Sea branch.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 2 only

Answer

Statements 1 and 2 are correct, while statement 3 is incorrect because the Shillong Plateau intercepts the moisture-rich Bay of Bengal branch of the South-West Monsoon.
The statement combination containing only 1 and 2 is correct. Kalbaisakhi are indeed convective pre-monsoon thunderstorms originating over the Chota Nagpur Plateau, and the leeward side of the Western Ghats creates a semi-arid (BShwBShw) climate zone across interior Maharashtra and Karnataka. Statement 3 is false because the Meghalaya/Shillong Plateau receives rainfall from the Bay of Bengal branch, not the Arabian Sea branch.

Step-by-Step Solution

1
Evaluate Statement 1 regarding pre-monsoon local storms.
Statement 1 is correct.
Kalbaisakhi (or Nor'westers) are localized convective rainstorms generated due to intense surface heating over the Chota Nagpur Plateau during April and May, moving eastward into West Bengal and Bangladesh.
2
Evaluate Statement 2 regarding rain-shadow climatic zones.
Statement 2 is correct.
As moisture-laden Arabian Sea winds cross the Western Ghats, they shed most precipitation on the windward slopes. Desceding dry air on the eastern leeward side produces a semi-arid rain-shadow belt classified as BShwBShw under Köppen's system.
3
Evaluate Statement 3 regarding monsoonal branches affecting Northeast India.
Statement 3 is incorrect.
The Shillong Plateau and Khasi Hills directly face the Bay of Bengal branch of the South-West monsoon. The funneling geometry of the hills forces this moisture-laden air to ascend rapidly, causing world-record rainfall at Cherrapunji and Mawsynram, not the Arabian Sea branch.

Key Concept

Spatial dynamics of Indian monsoon branches, local pre-monsoon disturbances, and rain-shadow climatic classification.
Estimated Time:2m 0s
Question 100Question →

Arrange the following primary tributaries of the Indus River system in sequential order from North to South based on the latitude of their origins:

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The correct sequential order of the Indus tributaries from North to South is Jhelum River, Chenab River, Ravi River, and Sutlej River.
The correct sequence from North to South starts with the Jhelum River (originating in Verinag, Kashmir Valley), followed by the Chenab River (originating near Bara-lacha La in Himachal Pradesh), then the Ravi River (originating near Rohtang Pass in Himachal Pradesh), and concludes with the Sutlej River (originating near Lake Rakshastal in Tibet and entering Himachal Pradesh), representing a clear north-to-south gradient.

Step-by-Step Solution

1
Identify the geographical origin coordinates and mountain ranges of each specified Indus tributary.
Jhelum originates at Verinag (Pir Panjal range), Chenab near Bara-lacha La (Zaskar range), Ravi near Rohtang Pass (Pir Panjal/Greater Himalayas), and Sutlej near Lake Rakshastal.
Determining exact source locations helps establish absolute latitudinal positions.
2
Compare the latitudes of origin for each river from highest to lowest.
Jhelum (~33.5° N) > Chenab (~32.7° N) > Ravi (~32.4° N) > Sutlej (~31.4° N).
Higher latitudes represent more northern geographic positions.
3
Assemble the final sequence in descending latitudinal order (North to South).
Jhelum River → Chenab River → Ravi River → Sutlej River.
This aligns with the standard geographical layout of the Panjnad tributaries across Jammu & Kashmir, Himachal Pradesh, and Punjab.

Key Concept

Indus River System Spatial Distribution and Tributary Hierarchy
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