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Indian and World Geography

296 questions

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Question 261Question →

Which of the following statements regarding the pedological characteristics and climatic conditions of Red Soils and Laterite Soils in India are correct?

Select all that apply

Show answer & explanation

Answer: Red soils develop a reddish color due to a wide diffusion of iron in crystalline and metamorphic rocks.; Laterite soils develop in regions characterized by high temperatures and monsoon rainfall with alternating wet and dry periods.

Answer

The correct statements are that red soils derive their reddish color from iron diffusion in crystalline/metamorphic rocks, and that laterite soils develop under high temperatures with alternating wet and dry monsoon seasons.
The statements confirming that red soils derive their color from iron diffusion in crystalline rocks and that laterite soil formation requires tropical climates with alternating wet and dry monsoon seasons are both pedologically accurate.

Step-by-Step Solution

1
Evaluate the cause of red color in Red Soils
Iron diffusion in crystalline and metamorphic rocks gives red soil its characteristic color (turning yellow when hydrated).
This is a fundamental chemical property of red soils in India.
2
Examine the organic and mineral composition of Laterite Soils
Laterite soils are poor in nitrogen, humus, phosphate, and lime, but rich in iron oxide and potash.
High temperatures accelerate bacterial activity that breaks down humus, while intense leaching removes soluble silica and bases.
3
Identify the climatic requirements for Laterite soil pedogenesis
Tropical monsoon conditions with alternating wet and dry periods are essential for intense leaching.
Heavy rainfall leaches silica, leaving behind hydrated oxides of aluminum and iron.
4
Determine the climatic and topographical distribution of Red Soils
Red soils occupy areas of low annual rainfall in the eastern and southern plateau region, not waterlogged high-rainfall zones.
Heavy rainfall regions induce tropical leaching (lateritization), not red soil retention.

Key Concept

Pedological features, chemical composition, and climatic requirements of Red and Laterite soils in India
Question 262Question →

Consider the following statements regarding Peaty and Marshy Soils (locally known as Kari in parts of Kerala) in India:

1. They develop in humid regions characterized by heavy rainfall and dense vegetation growth, leading to a high accumulation of organic matter.
2. These soils are predominantly alkaline in nature and are completely free of soluble mineral salts.
3. They are characteristically heavy, dark in color, and strongly acidic.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 3 only

Answer

The correct option is the one stating that statements 1 and 3 only are correct.
Peaty and marshy soils form in humid coastal regions (such as Kottayam and Alappuzha districts of Kerala, Sundarbans of West Bengal, and coastal Odisha) under conditions of heavy rainfall and high water table. They are heavy, dark in color, highly acidic, and rich in organic matter (40–50%). Statement 2 incorrectly characterizes them as alkaline and free of soluble salts.

Step-by-Step Solution

1
Evaluate Statement 1 regarding formation and organic content.
Peaty soils originate in areas with high rainfall, high humidity, and dense vegetative cover (such as coastal Kerala, Sundarbans, and coastal Odisha). Organic matter accumulation reaches up to 40–50%. Statement 1 is correct.
Verifies the pedogenic climate and organic composition.
2
Evaluate Statement 2 regarding soil pH and salinity.
Due to massive humification and accumulation of organic acids, peaty soils are strongly acidic (pH often below 5.0) and typically contain considerable amounts of soluble salts and ferrous iron. Statement 2 is incorrect.
Identifies erroneous claims regarding soil chemistry and pH.
3
Evaluate Statement 3 regarding texture and color.
Peaty soils are heavy, dark/black in appearance, and highly acidic. Statement 3 is correct.
Confirms physical attributes of peaty soils.

Key Concept

Pedological and chemical characteristics of Peaty and Marshy Soils in India
Question 263Question →

With reference to the physiographic sub-divisions of Peninsular India, which of the following statements accurately explains the geological origin and structural nature of the Western Ghats?

Show answer & explanation

Answer: They form the faulted and eroded western edge (escarpment) of the Peninsular plateau, created during the subsidence of the landmass into the Arabian Sea.

Answer

The statement explaining that the Western Ghats form the faulted and eroded western edge (escarpment) of the Peninsular plateau, created during the subsidence of the landmass into the Arabian Sea.
Geologically, the Western Ghats (Sahyadris) are not true mountain ranges formed by crustal folding. Instead, they are the steep western cliff edge (escarpment) of the Peninsular Plateau. They were formed during the breakup of Gondwanaland when the western part of the plateau faulted and submerged beneath the Arabian Sea, creating a high continuous relief wall facing the western coast.

Step-by-Step Solution

1
Analyze the geological history of the Peninsular Plateau.
The Peninsular Plateau is part of ancient Gondwanaland consisting of stable Precambrian crystalline rocks.
Understanding structural origin helps distinguish true fold mountains from fault scarps.
2
Evaluate the mechanism that shaped the Western Ghats.
During the rifting of Gondwanaland and the northward drift of the Indian plate, faulting led to the submergence of the western segment into the Arabian Sea, leaving behind a steep relief escarpment known as the Sahyadris / Western Ghats.
This confirms that the Western Ghats are continuous fault-scarp relief features rather than collisional fold mountains.

Key Concept

Geological origin and structural relief characteristics of the Western Ghats escarpment.
Question 264Question →

Which major port of India is situated at the head of the Gulf of Kutch, operates as a tidal port, and primarily serves as a vital hub for importing crude oil, petroleum products, and bulk cargo for northern and northwestern India?

Show answer & explanation

Answer: Deendayal Port (Kandla)

Answer

Deendayal Port (Kandla) is the major tidal port situated at the head of the Gulf of Kutch in Gujarat.
Deendayal Port (Kandla), situated in the Gulf of Kutch in Gujarat, was developed after Independence as a natural deep-water tidal port. It serves as a major trade outlet for northern and northwestern India, handling substantial imports of crude oil, petroleum products, and fertilizers.

Step-by-Step Solution

1
Identify the geographical location and unique physical characteristic specified in the question stem.
The port is located at the Gulf of Kutch in Gujarat and is classified as a tidal port.
Geographical location (Gulf of Kutch) and hydrological type (tidal port) distinguish Kandla from other ports along the Indian coastline.
2
Evaluate the given port options against these specifications.
Deendayal Port (Kandla) matches the Gulf of Kutch location and tidal port classification. Mormugao is in Goa, Syama Prasad Mookerjee Port is a riverine port in West Bengal, and Jawaharlal Nehru Port is a container hub in Navi Mumbai.
Differentiating ports by location and administrative/operational type identifies the correct choice.

Key Concept

Major Sea Ports of India, Location, and Functional Specialization
Estimated Time:1m 0s
Question 265Question →

A major cash crop in India requires high temperatures ranging between 24∘C24^\circ\text{C} and 35∘C35^\circ\text{C}, relative humidity around 80%80\%-90%90\%, annual rainfall exceeding 150 cm150\text{ cm}, and fertile, well-drained silt loam alluvial soils that receive annual nutrient replenishment from river floods. Which of the following commercial crops best matches these specific agro-climatic conditions?

Show answer & explanation

Answer: Jute

Answer

Jute is the correct commercial crop matching all specified climatic and soil requirements.
Jute is a major commercial fiber crop requiring a warm and humid climate (24∘C–35∘C24^\circ\text{C}\text{--}35^\circ\text{C}, >80%>80\% humidity) and abundant rainfall (>150 cm>150\text{ cm}). It grows best on light sandy to clayey silt loam soils of river deltas and floodplains that receive annual silt deposits during monsoon floods.

Step-by-Step Solution

1
Analyze the temperature and humidity requirements given in the prompt.
High temperatures (24∘C24^\circ\text{C} to 35∘C35^\circ\text{C}) and high humidity (80%80\%-90%90\%) indicate a humid tropical cash crop.
Eliminates temperate Rabi crops like Wheat.
2
Evaluate the soil and moisture conditions.
The requirement of rich alluvial silt refreshed annually by inundations points directly to deltaic floodplains (such as the Lower Ganga-Brahmaputra plain).
Differentiates crops grown on basaltic black soils (Cotton) or acidic hill slopes (Tea) from floodplain cash crops.
3
Synthesize conditions to identify the crop.
Jute (known as the 'Golden Fibre') is predominantly cultivated in West Bengal, Assam, and Bihar under these exact floodplain and climatic parameters.
Confirms Jute as the unique correct answer.

Key Concept

Agro-climatic requirements and pedological distribution of commercial fiber crops in India.
Estimated Time:1m 0s
Question 266Question →

Consider the following statements regarding the Purvanchal (Eastern Hills) physiographic region of India:

1. The Patkai Bum, Naga Hills, and Mizo Hills form part of the Purvanchal range aligned along India's eastern border.
2. Structurally, these hills are composed primarily of Pre-Cambrian plutonic granitic basement rocks.
3. The Manipur valley, surrounded by these hills, features an intermontane basin containing Loktak Lake with floating vegetation masses known as 'phumdis'.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 3 only

Answer

Statements 1 and 3 are correct, while Statement 2 is incorrect.
The Purvanchal range comprises north-south aligned hill tracts including Patkai Bum, Naga Hills, Manipur Hills, and Mizo Hills. Geologically, these ranges are composed of Tertiary sedimentary rocks, mainly sandstones and shales. The central valley of Manipur is a structural intermontane basin hosting Loktak Lake, famed for floating vegetation masses called phumdis. Thus, the option identifying statements 1 and 3 as correct is accurate.

Step-by-Step Solution

1
Evaluate Statement 1 regarding the constituent hill ranges of Purvanchal.
Statement 1 is correct. The Purvanchal hill system includes northern ranges like Patkai Bum, Naga Hills, Manipur Hills, and Mizo (Lushai) Hills forming the border between India and Myanmar.
Geographical orientation and named sub-ranges accurately reflect the Purvanchal region.
2
Evaluate Statement 2 regarding geological rock composition.
Statement 2 is incorrect. The Purvanchal hills are composed of sedimentary rocks (predominantly sandstones, shales, and mudstones) formed during Tertiary fold movements, rather than Pre-Cambrian plutonic granite.
Tectonic folding of marine sedimentary strata created these ranges during Himalayan orogeny.
3
Evaluate Statement 3 regarding the Manipur basin and Loktak Lake.
Statement 3 is correct. The central valley of Manipur is a unique intermontane lacustrine basin holding Loktak Lake, renowned for floating biomass masses known as phumdis.
Physiographic drainage features of the Manipur hills include this distinct lacustrine basin.

Key Concept

Physiographic and Geological Characteristics of Purvanchal (Eastern Hills)
Question 267Question →

The Vallarpadam International Container Transshipment Terminal (ICTT), commissioned to handle mainline container vessels locally and reduce India's dependence on foreign transshipment hubs like Colombo and Singapore, is situated at which of the following major ports of India?

Show answer & explanation

Answer: Cochin Port

Answer

Cochin Port
Cochin Port (located in Kerala on the Arabian Sea) houses the Vallarpadam International Container Transshipment Terminal (ICTT). It is India's first dedicated transshipment port terminal, strategically situated close to international maritime trade routes to handle mother container vessels directly.

Step-by-Step Solution

1
Identify the geographical location and purpose of the Vallarpadam ICTT
Vallarpadam ICTT is a major deep-water container transshipment terminal located on Vallarpadam Island in Kochi, Kerala.
It was commissioned to handle large mother container ships directly along the main international sea route.
2
Associate the terminal with its parent major port authority
Vallarpadam ICTT operates under the jurisdiction of the Cochin Port Authority (Kochi, Kerala).
Cochin Port serves as a strategic natural harbor on the Arabian Sea / Malabar Coast.

Key Concept

Major Ports of India and Maritime Container Transshipment
Estimated Time:1m 0s
Question 268Question →

Vegetation distribution across India is primarily determined by rainfall thresholds. Arrange the following natural vegetation types in ascending order of their average annual rainfall requirements:

Drag items to arrange them in the correct order

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Answer

The correct ascending order of average annual rainfall requirements is: Tropical Thorn Forests (<50 cm), Tropical Dry Deciduous Forests (70–100 cm), Tropical Moist Deciduous Forests (100–200 cm), and Tropical Wet Evergreen Forests (>200 cm).
The natural vegetation of India varies directly with total annual rainfall. Tropical Thorn Forests require <50 cm, Tropical Dry Deciduous Forests require 70–100 cm, Tropical Moist Deciduous Forests require 100–200 cm, and Tropical Wet Evergreen Forests require >200 cm. Ordering from lowest to highest rainfall yields Tropical Thorn Forests, Tropical Dry Deciduous Forests, Tropical Moist Deciduous Forests, and Tropical Wet Evergreen Forests.

Step-by-Step Solution

1
Identify the minimum precipitation threshold for semi-arid vegetation.
Tropical Thorn Forests require the lowest annual rainfall (less than 50 cm).
They consist of thorny trees and shrubs adapted to xerophytic conditions.
2
Determine the precipitation range for dry deciduous vegetation.
Tropical Dry Deciduous Forests require 70 cm to 100 cm of rainfall.
They form a transition zone between moist deciduous and thorn forests.
3
Determine the precipitation range for moist deciduous vegetation.
Tropical Moist Deciduous Forests require 100 cm to 200 cm of rainfall.
This is the most widespread forest type in India, shedding leaves in dry summer.
4
Identify the highest rainfall threshold among forest types.
Tropical Wet Evergreen Forests require more than 200 cm of rainfall.
High humidity and continuous moisture sustain dense, multi-layered evergreen canopies.

Key Concept

Climatic thresholds and precipitation requirements for natural vegetation belts in India.
Question 269Question →

The Meghalaya Plateau and the Karbi Anglong Hills are structural extensions of the main Peninsular Plateau of India. Which of the following statements regarding the physiography and geology of this region are correct?

Select all that apply

Show answer & explanation

Answer: The Meghalaya Plateau is separated from the Chota Nagpur Plateau by a structural fault down-warp known as the Malda Gap.; The Garo, Khasi, and Jaintia Hills constitute the major relief sub-divisions of the Meghalaya Plateau.

Answer

The statements confirming that the Meghalaya Plateau is separated from the Chota Nagpur Plateau by the Malda Gap and that it comprises the Garo, Khasi, and Jaintia Hills are correct.
The Meghalaya Plateau is geologically an extension of the Peninsular shield of India. Faulting during the Indian plate movement created a depressed gap between the Rajmahal Hills and the Garo Hills (the Malda Gap), which was later filled by river sediments. The plateau is further divided into prominent hill ranges including the Garo, Khasi, and Jaintia Hills.

Step-by-Step Solution

1
Examine the structural origin of the Meghalaya Plateau in relation to Peninsular India.
Identify that the Meghalaya and Karbi Anglong plateaus are detached northeastern remnants of the ancient Peninsular shield, separated from the Rajmahal Hills by the Rajmahal-Garo (Malda) Gap.
Tectonic faulting and subsequent river deposition created the gap across the Peninsular block.
2
Analyze the rock composition and geological age of the plateau.
Recognize that the bedrock consists of Archaean quartzites, schists, and ancient granites rather than young Quaternary river alluvium.
This invalidates the claim of recent Brahmaputra alluvial origin.
3
Evaluate the relief units and climatic interaction of the Meghalaya landforms.
Confirm the west-to-east layout of the Garo, Khasi, and Jaintia Hills, and note that their funnel-shaped southern aspect produces heavy rainfall rather than an arid rain-shadow zone.
Windward orographic precipitation dominates the southern slope.

Key Concept

Physiographic and structural characteristics of the Meghalaya Plateau as part of the Peninsular Shield
Question 270Question →

Consider the following statements regarding major transport infrastructure corridors and inland waterways in India:

1. The North-South Corridor connects Srinagar in Jammu & Kashmir to Kanyakumari in Tamil Nadu.
2. National Waterway 1 (NW-1) is established along the Brahmaputra River between Sadiya and Dhubri.
3. The East-West Corridor connects Silchar in Assam to Porbandar in Gujarat.

Which of the statements given above are correct?

Show answer & explanation

Answer: 1 and 3 only

Answer

Statements 1 and 3 are correct.
The correct response identifies statements 1 and 3 as true. The North-South Corridor connects Srinagar to Kanyakumari, and the East-West Corridor connects Silchar to Porbandar. Statement 2 is false because National Waterway 1 (NW-1) runs along the Ganga-Bhagirathi-Hooghly river system between Prayagraj and Haldia, whereas the Sadiya-Dhubri stretch on the Brahmaputra River is National Waterway 2 (NW-2).

Step-by-Step Solution

1
Evaluate Statement 1 regarding the North-South Corridor.
Statement 1 is correct. The North-South Corridor under the National Highways Development Project (NHDP) runs from Srinagar in Jammu & Kashmir to Kanyakumari in Tamil Nadu.
It forms the primary north-south highway axis of India.
2
Evaluate Statement 2 regarding National Waterway 1.
Statement 2 is incorrect. National Waterway 1 (NW-1) stretches along the Ganga-Bhagirathi-Hooghly river system from Prayagraj (Allahabad) to Haldia. The stretch along the Brahmaputra River between Sadiya and Dhubri is National Waterway 2 (NW-2).
NW-1 and NW-2 are distinct inland waterway routes with different river systems and geographies.
3
Evaluate Statement 3 regarding the East-West Corridor.
Statement 3 is correct. The East-West Corridor connects Silchar in Assam to Porbandar in Gujarat.
It forms the major east-west highway axis connecting northeastern and western India.

Key Concept

National Highways Development Corridors and Inland Waterways Classification
Estimated Time:1m 0s
Question 271Question →

India possesses an extensive coastline dotted with several major sea ports that serve as vital gateways for international trade. Arrange the following major sea ports located along the West Coast of India in correct sequential order from North to South:

Drag items to arrange them in the correct order

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Answer

The correct sequence from North to South is Deendayal Port (Kandla), Mormugao Port, New Mangalore Port, and Cochin Port.
The correct geographic order from North to South along the western coast of India is Deendayal Port in Gujarat (23.00° N), Mormugao Port in Goa (15.41° N), New Mangalore Port in Karnataka (12.92° N), and Cochin Port in Kerala (9.96° N).

Step-by-Step Solution

1
Identify the state location and latitudinal position of each major port along India's western coast.
Deendayal Port (Kandla) is in Gujarat (~23.00° N), Mormugao Port is in Goa (~15.41° N), New Mangalore Port is in Karnataka (~12.92° N), and Cochin Port is in Kerala (~9.96° N).
Spatial geographical questions require mapping coastal features to their corresponding state boundaries along a north-south axis.
2
Order the ports from highest latitude (northernmost) to lowest latitude (southernmost).
The resulting sequence is Deendayal Port (Kandla) → Mormugao Port → New Mangalore Port → Cochin Port.
Gujarat forms the northern boundary of the west coast, followed sequentially down the peninsular coast by Goa, Karnataka, and Kerala.

Key Concept

Latitudinal Distribution of Major Ports on the West Coast of India
Estimated Time:1m 0s
Question 272Question →

Consider the following statements regarding the pedological characteristics and agricultural potential of Arid (Desert) Soils in India:

1. They are generally sandy in texture, saline in nature, and severely deficient in nitrogen and organic content.
2. The lower horizons of these soils accumulate 'Kankar' layers due to increasing calcium content downwards, which restricts downward infiltration of water.
3. Due to extreme salinity and lack of organic matter, these soils are completely infertile and cannot support crop cultivation even with artificial irrigation.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 2 only

Answer

1 and 2 only
The statement combination indicating 1 and 2 only is correct. Arid soils in India (predominantly found in western Rajasthan, parts of Gujarat and southern Punjab) feature a sandy texture, low nitrogen/humus content, and high salinity. Their lower horizons are characterized by calcic nodule ('Kankar') accumulation which restricts infiltration. However, they are not completely infertile; with irrigation, crops like barley, rape, cotton, and millets thrive in these soils.

Step-by-Step Solution

1
Analyze statement 1 regarding physical and chemical properties of Arid soils
Arid soils range from red to brown in color, are sandy to gravelly in texture, soluble-salt rich (saline), and deficient in nitrogen and humus.
Evaporation exceeds precipitation in arid climates, leading to low organic content and high salt accumulation.
2
Analyze statement 2 regarding horizon development and Kankar layers
Calcium content increases downwards in Arid soil profiles, leading to the formation of hard calcareous nodules (Kankar) in the sub-surface layers.
The Kankar layer impedes water infiltration, allowing retained moisture to be available when water is supplied artificially.
3
Evaluate statement 3 regarding fertility under irrigation
Arid soils contain adequate phosphate content and are responsive to irrigation. Areas under the Indira Gandhi Canal command in western Rajasthan successfully grow drought-resistant and staple crops.
Lack of water, not complete mineral sterility, is the limiting factor for crop growth in desert soils.

Key Concept

Pedological properties, horizon structure, and agricultural potential of Arid Soils in India
Question 273Question →

Consider the following statements regarding the Karewa formations in the physiography of Northern India:

1. Karewas are lacustrine deposits composed of glacial clay, silt, and sand embedded with moraines.
2. These formations are predominantly found along the foot slopes of the Pir Panjal range in the Kashmir Valley.
3. They are economically significant for the specialized cultivation of Zafran (saffron), almond, and walnut.

Which of the statements given above are correct?

Show answer & explanation

Answer: 1, 2 and 3

Answer

Statements 1, 2, and 3 are all correct.
All three statements are factually accurate. Karewas are lacustrine fluvio-glacial deposits of the Pleistocene epoch found extensively on the slopes of the Pir Panjal range in Kashmir, and they are famous for high-value Zafran (saffron) cultivation.

Step-by-Step Solution

1
Analyze the geological origin described in statement 1.
Karewas are flat-topped mounds forming terraces composed of lacustrine (lake deposits) clay, silt, sand, and moraine debris deposited during the Pleistocene period when the Valley of Kashmir was a lake.
Verifies the structural definition of Karewas.
2
Evaluate the geographical spatial distribution in statement 2.
Karewa formations cover a large area of the Kashmir Valley, mainly lying along the flanks of the Pir Panjal Range.
Confirms the regional relief context within the NW Himalayas.
3
Assess the economic and agricultural usage in statement 3.
The highly fertile Karewa soil beds provide ideal conditions for growing Zafran (local variety of saffron), as well as apple, almond, and walnut orchards.
Confirms economic utility.

Key Concept

Karewa Formations of Kashmir Himalayas
Question 274Question →

Consider the following statements regarding Montane Forests in India:

1. In the southern hill ranges of the Nilgiris, Anaimalai, and Palani, the temperate forests are locally referred to as 'Sholas'.
2. Deodar, a highly valuable endemic timber species, is predominantly distributed in the moist temperate forests of the Eastern Himalayas.
3. At higher altitudes exceeding 3,500 m3,500\text{ m}, alpine meadows transition into tundra-type vegetation consisting of mosses and lichens near the snowline.

Which of the statements given above are correct?

Show answer & explanation

Answer: 1 and 3 only

Answer

1 and 3 only
The combination stating that only statements 1 and 3 are correct is accurate. Temperate patch forests in the South Indian hills are termed Sholas, and alpine pastures transition into tundra-like mosses and lichens at altitudes above 3,500 m3,500\text{ m} near the snowline. Statement 2 is incorrect because Deodar is predominantly located in the Western Himalayas.

Step-by-Step Solution

1
Evaluate Statement 1 regarding Peninsular temperate forests
Statement 1 is correct. Temperate forests found in the higher hill ranges of South India (Nilgiris, Anaimalai, Palani hills) above 1,500 m1,500\text{ m} elevation are known as 'Sholas'.
Topography and elevation in these peninsular ranges create temperate climate pockets distinct from surrounding tropical vegetation.
2
Evaluate Statement 2 regarding Deodar forest distribution
Statement 2 is incorrect. Deodar (*Cedrus deodara*) is an endemic, durable timber tree characteristic of the Western Himalayas (ranging from Jammu & Kashmir, Himachal Pradesh to Uttarakhand) at altitudes of 1,500 m1,500\text{ m} to 2,500 m2,500\text{ m}. Eastern Himalayas have higher rainfall and are dominated by broadleaf evergreen trees like oaks, laurels, and rhododendrons.
Western Himalayas experience lower rainfall and cooler, drier conditions favorable for Deodar coniferous growth compared to the wetter Eastern Himalayas.
3
Evaluate Statement 3 regarding high-altitude alpine zonation
Statement 3 is correct. As elevation increases past 3,500 m3,500\text{ m} to 4,000 m4,000\text{ m}, alpine forests give way to alpine pastures, which further degrade into mosses and lichens near the permanent snowline.
Extreme cold temperatures and reduced soil depth near the snowline restrict plant growth to low-lying tundra vegetation like lichens and mosses.

Key Concept

Altitudinal Zonation and Regional Distribution of Montane Forests in India
Estimated Time:1m 0s
Question 275Question →

Which of the following statements regarding the pedo-climatic conditions required for plantation agriculture of tea and coffee in India are correct?

Select all that apply

Show answer & explanation

Answer: Tea bushes require deep, friable, and well-drained acidic soil with high organic matter content.; Coffee cultivation requires a warm, humid climate and is mostly confined to hill slopes receiving frost-free conditions.

Answer

The correct statements are that tea requires well-drained acidic soils rich in organic matter, and coffee cultivation demands a frost-free, warm, and humid climate on shaded hill slopes.
Tea requires light, acidic, humus-rich soil with high drainage capacity, making hill slopes ideal. Coffee requires frost-free, warm, and humid conditions provided by the sheltered hill slopes of southern India (such as Karnataka, Kerala, and Tamil Nadu).

Step-by-Step Solution

1
Analyze soil and drainage requirements for tea cultivation
Tea requires acidic soils (pHpH 4.5–5.54.5\text{--}5.5) and excellent drainage because water stagnation damages root systems.
Topographical slope is critical for tea to prevent waterlogging.
2
Examine climatic and relief conditions for coffee growing in India
Coffee requires warm, frost-free climates with temperature ranges between 15∘C15^\circ\text{C} and 28∘C28^\circ\text{C} on well-drained hill slopes (such as the Western Ghats).
Frost causes severe damage to coffee blossoms and berries.

Key Concept

Pedo-climatic constraints of plantation crops (tea and coffee) in India
Question 276Question →

Match the following prominent mountain peaks of India with their corresponding physiographic locations or hill ranges.

Click a left item, then click its matching right item

Items

Anamudi
Dhupgarh
Guru Shikhar
Saddle Peak

Matches

Show answer & explanation

Answer

Anamudi corresponds to the highest peak in Peninsular India (Anaimalai Hills); Dhupgarh corresponds to the highest peak in the Satpura Range (Mahadeo Hills); Guru Shikhar corresponds to the highest peak in the Aravalli Range (Mount Abu); Saddle Peak corresponds to the highest peak of the Andaman and Nicobar Islands (North Andaman).
Each mountain peak is accurately matched with its mountain range or geographic sub-region: Anamudi belongs to the Anaimalai Hills, Dhupgarh to the Satpura Range, Guru Shikhar to the Aravalli Range, and Saddle Peak to North Andaman Island.

Step-by-Step Solution

1
Locate Anamudi within India's physiographic divisions.
Anamudi stands at 2,695 m in the Anaimalai Hills, making it the highest elevation in Peninsular India.
Physiography of the Western Ghats places Anamudi at the junction of the Anaimalai, Cardamom, and Palani hills.
2
Identify the highest point of the Central Indian relief feature, the Satpura Range.
Dhupgarh is the highest summit of the Satpura Range, situated in the Mahadeo Hills.
Geographical mapping associates Dhupgarh with the Mahadeo range in Madhya Pradesh.
3
Determine the highest elevation in the relict mountain range of Western India.
Guru Shikhar is the highest summit of the Aravalli Range in Rajasthan.
The Aravalli residual mountains culminate at Mount Abu's Guru Shikhar peak.
4
Identify the primary peak of the Bay of Bengal island chain.
Saddle Peak is the highest feature in the Andaman & Nicobar group, situated on North Andaman Island.
The island relief features place Saddle Peak on North Andaman.

Key Concept

Major Mountain Peaks and Relief Features of India
Question 277Question →

In human geography and demographic studies, different density measures and demographic metrics provide insights into land pressure and age dependency. Match the demographic metrics listed in List-I with their corresponding definitions in List-II:

Click a left item, then click its matching right item

Items

Arithmetic Density
Physiological Density
Agricultural Density
Dependency Ratio

Matches

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Answer

Arithmetic Density matches with the ratio of total population to total geographical area; Physiological Density matches with the ratio of total population to net cultivated land area; Agricultural Density matches with the ratio of agricultural population to net cultivated land area; and Dependency Ratio matches with the ratio of dependent age group to working-age population.
Arithmetic Density measures total population over total land area. Physiological Density measures total population against net cultivated land to assess pressure on arable resources. Agricultural Density isolates the farming population over cultivated land. Dependency Ratio measures the proportion of dependents relative to the active workforce.

Step-by-Step Solution

1
Identify the basic land-to-population metric.
Arithmetic Density is total population divided by total geographical area.
It represents the standard measure of population density across all land.
2
Distinguish between physiological density and agricultural density.
Physiological density uses total population as the numerator over net cultivated land, whereas agricultural density uses agricultural population as the numerator over net cultivated land.
Physiological density indicates general population pressure on arable land, while agricultural density shows farming population density on cultivated land.
3
Identify the age-structure indicator.
Dependency Ratio relates the dependent population (below 15 years and 65 years & above) to the working-age population (15 to 64 years).
It reflects the demographic burden borne by the productive labor force.

Key Concept

Population density metrics and demographic ratios
Question 278Question →

In the geography of human settlements in India, rural habitations often develop distinct geometric arrangements based on terrain, transport networks, and physical barriers. Which of the following settlement patterns is characteristically formed when houses and village structures are constructed in a row along a major transportation route, canal, or river levee?

Show answer & explanation

Answer: Linear pattern

Answer

The linear pattern is characteristically formed when houses are constructed in a row along a road, railway line, river bank, or canal.
Linear settlement patterns occur in rural India along physical or transport corridors such as roads, rivers, railway lines, and embankments. The linear feature restricts expansion sideways, encouraging ribbon-like structural alignment.

Step-by-Step Solution

1
Analyze the spatial distribution features described in the question stem.
The stem describes houses constructed sequentially along a singular physical feature like a transportation route or river levee.
Topographical linear barriers and transportation corridors constrain building expansion to one main axis.
2
Correlate spatial constraints with standard human settlement classification types in geography.
Settlements along linear routes naturally adopt a linear arrangement.
Proximity to the transport or water line provides uniform access advantage to all residents along that axis.

Key Concept

Morphology of Rural Settlement Patterns in India
Question 279Question →

Which of the following relief features of India is correctly matched with its dominant physiographic and geological characteristic?

Show answer & explanation

Answer: Bhabar belt – A narrow porous zone of pebble deposits along the Shiwalik break of slope where streams sink and flow underground.

Answer

The Bhabar belt is correctly matched as a narrow porous zone of pebble deposits along the Shiwalik break of slope where streams sink and flow underground.
The Bhabar belt is a narrow zone (8 to 10 km wide) running parallel to the foothills of the Shiwalik range. It is composed of unsorted pebbles and boulders deposited by streams descending from the mountains. Due to the high porosity of these pebble beds, surface streams sink and flow underground.

Step-by-Step Solution

1
Examine the structural characteristics of the northern plain relief divisions from north to south.
As Himalayan rivers descend from the Shiwaliks, they deposit boulders and coarse pebbles forming the Bhabar belt (8-10 km wide). High porosity causes surface streams to disappear.
Coarse alluvial fans along mountain slopes create high permeability.
2
Analyze the features of Terai and Bhangar zones.
South of Bhabar lies the marshy, wet Terai zone where underground streams re-emerge. Bhangar is the older alluvium forming higher terraces away from river beds, distinct from Khadar.
Differentiating between wet marshland (Terai) vs. older floodplain terraces (Bhangar).
3
Evaluate the rock composition of the Deccan Traps.
Deccan Traps are basaltic lava landforms formed by volcanic activity, not folded Gondwana sedimentary rocks.
Peninsular shield geology distinguishes volcanic basaltic traps from coal-bearing Gondwana basins.

Key Concept

Physiographic relief divisions of the Northern Plains and Peninsular Plateau of India
Estimated Time:1m 0s
Question 280Question →

Match the soil types of India listed in List-I with their corresponding pedological characteristics described in List-II.

Click a left item, then click its matching right item

Items

Laterite Soil
Black (Regur) Soil
Saline Soil
Peaty Soil

Matches

Show answer & explanation

Answer

Laterite Soil corresponds to intense leaching of silica and lime; Black Soil corresponds to high moisture retention and self-ploughing capacity; Saline Soil corresponds to high concentration of soluble salts due to capillary action; Peaty Soil corresponds to accumulation of large amounts of organic matter producing heavy and highly acidic soils.
Each soil type is correctly paired with its primary pedological feature: Laterite Soil with intense tropical leaching of silica and lime, Black Soil with moisture retention and self-ploughing swell-shrink dynamics, Saline Soil with surface salt crusting via capillary action, and Peaty Soil with heavy organic matter accumulation resulting in high acidity.

Step-by-Step Solution

1
Identify the pedogenic process of Laterite Soil
Heavy monsoon rainfall washes away soluble nutrients like lime and silica, leaving behind oxides of iron and aluminum.
This intense tropical leaching process is known as laterization.
2
Analyze the physical mechanics of Black (Regur) Soil
High clay content absorbs water and swells, while drying produces wide cracks that allow surface soil to fall inward.
This natural churning process provides aeration and moisture retention without requiring manual tillage.
3
Determine the chemical enrichment mechanism of Saline Soil
High evaporation rates draw subsoil water containing dissolved salts to the upper horizon through capillary action.
Excessive salts remain on the surface as a white crust, inhibiting crop root growth.
4
Examine the composition of Peaty Soil
Humid climatic conditions with waterlogging lead to anaerobic decay of vegetation and massive humus accumulation.
Organic content can reach up to 40-50%, producing a dense, highly acidic soil profile.

Key Concept

Pedological characteristics and pedogenic processes of major Indian soil groups
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