Mountains and Plateaus of India

Correct answer: A. Anamudi

The correct answer is Anamudi. Anamudi, whose name means “elephant’s forehead,” is located in Kerala in the Western Ghats and is widely recognized as the highest peak in South India. The physical-geography clue is decisive: the Western Ghats run along western peninsular India, and Anamudi belongs to this mountain system. Nanda Devi is a major Himalayan peak in Uttarakhand, not a South Indian peak. Guru Shikhar is situated in the Aravalli Range of Rajasthan, and Dhupgarh is the highest point of the Satpura Range in Madhya Pradesh. Thus, Kerala plus the Western Ghats uniquely leads to Anamudi.

Correct answer: A. Nanda Devi

The correct answer is Nanda Devi. It is a major Himalayan peak located in Uttarakhand and is one of the best-known mountain landmarks of northern India. The state and mountain-system clues together make the identification clear. Mahendragiri is associated with the Eastern Ghats, particularly the Odisha–Andhra Pradesh region, rather than the Himalayan system. Doddabetta is a prominent peak in the Nilgiri Hills of Tamil Nadu, part of the southern highlands. Guru Shikhar belongs to the Aravalli Range in Rajasthan. Hence, when Uttarakhand and the Himalaya are given as the key clues, Nanda Devi is the only suitable option.

Correct answer: A. Eastern Ghats

The correct answer is the Eastern Ghats. They form a discontinuous or broken hill system along much of the eastern side of peninsular India. Several major east-flowing rivers, including the Mahanadi, Godavari, Krishna, and Cauvery, cut through or interrupt this range before reaching the Bay of Bengal. This river dissection explains why the Eastern Ghats are not as continuous as the Western Ghats. The Western Ghats are a more continuous escarpment along the western coast. Karakoram is a high mountain range in the trans-Himalayan region, while Himadri refers to the Great or Inner Himalaya. Therefore, the eastern coast and river-cut discontinuity identify the Eastern Ghats.

Correct answer: A. Compression of the Indian and Eurasian plates

The correct answer is compression of the Indian and Eurasian plates. The Indian Plate moved northward and collided with the Eurasian Plate. The enormous compressional forces shortened, folded, and uplifted sediments that had accumulated in the former Tethys Sea, producing the young fold mountains of the Himalaya. This is a plate-tectonic process, not a volcanic or coastal process. Cooling of Deccan lava explains the formation of basaltic volcanic rock and the Deccan Trap, not Himalayan folding. The Aravalli Range is an ancient eroded mountain system, and coral growth cannot create the folded Himalayan ranges. Therefore, plate convergence and compression provide the correct geological explanation.

Correct answer: B. Basaltic lava flows

The correct answer is basaltic lava flows. The Deccan Trap was built by extensive outpourings of fluid basaltic lava, especially during the Cretaceous period. As successive lava sheets cooled and solidified, they produced layered, step-like relief; the word “trap” is associated with a stair-step appearance. Weathering of the basalt, together with the accumulation of clay-rich material, helped form the black cotton soil that is widespread over parts of the Deccan Plateau. Himalayan glaciers, marine coral, and Ganga alluvium do not explain both features. Glaciers are associated with high mountains, coral forms reef structures, and alluvium is river-deposited sediment. Thus basaltic lava flows provide the unified explanation.

Correct answer: A. Rift valley route

The correct answer is a rift valley route. Unlike most major peninsular rivers, which flow eastward toward the Bay of Bengal, the Narmada and Tapi flow westward toward the Arabian Sea. Their courses are associated with linear structural depressions or rift valleys between uplifted blocks. The Narmada flows through a rift valley between the Vindhya and Satpura ranges, while the Tapi also follows a tectonic trough for much of its course. This structural setting helps explain their direction and elongated valleys. An Eastern Ghats delta, a Himalayan bend, and a coral lagoon are not the relevant relief features. Therefore, rift-valley alignment is the best geographical explanation.

Correct answer: A. Western slopes are wetter and the interior Deccan may be relatively drier

The correct conclusion is that the western slopes are wetter while the interior Deccan may be relatively drier. Moisture-laden southwest monsoon winds from the Arabian Sea rise when they meet the Western Ghats. The air cools, condenses, and produces heavy orographic rainfall on the windward western slopes. After crossing the crest, the air contains less moisture, so the leeward side lies in a rain-shadow zone and generally receives less rainfall. This helps explain drier areas of the Deccan interior. The effect does not cause snowfall across India, submerge the Eastern Ghats, or transform the ancient Aravalli into a young fold range.

Correct answer: A. It explains the isolated north-eastern part of the Peninsular Plateau

The correct answer is that the Meghalaya Plateau represents an isolated north-eastern extension or separated part of the Peninsular Plateau. In school geography, the Rajmahal–Garo gap is used to describe the structural separation between the main Peninsular Plateau and this northeastern block. The Meghalaya Plateau includes the Garo, Khasi, and Jaintia hills and has a distinctive plateau character. It is not a pass of the Western Ghats, a peak of the Himadri, or a lava region of the Aravalli Range. The question tests the relationship between geological structure and the distribution of India’s plateau regions. Therefore, the isolated northeastern part of the Peninsular Plateau is the correct interpretation.

Correct answer: A. Himalayas are young fold mountains formed by collision of Indian and Eurasian plates

The governing concept is plate tectonics and the formation of fold mountains. The Indian Plate moved northward and collided with the Eurasian Plate; the resulting compressional forces folded and uplifted sedimentary rock layers, producing the young fold mountains of the Himalayas. Therefore option A directly explains both the force and the landform. Deccan lava is linked to volcanic plateau formation, not Himalayan folding. Coral deposition cannot account for the enormous continental mountain belt, and Ganga alluvium is deposited in the plains after erosion and transport rather than forming the Himalaya. The evidence is thus the plate collision and the young-fold character of the range.

Correct answer: B. Basaltic lava flows

The governing concept is volcanic landform formation and the relationship between parent rock and soil. The Deccan Trap was built by extensive, successive basaltic lava flows. As the basalt weathered over long periods, it produced deep dark cotton soil, commonly called regur, in many parts of the Deccan Plateau. Thus option B explains both the stepped plateau form and the associated black soil. Glacial erosion would produce a different set of erosional landforms and is not responsible for the Deccan Trap. Coral deposition occurs in marine settings, while sea tides shape coasts rather than creating this inland basaltic plateau. The correct reasoning is therefore lava flows first, followed by weathering and soil development.

Correct answer: C. Rivers like Mahanadi, Godavari, Krishna, and Cauvery cut them

The governing concept is how river erosion and incision create gaps in a mountain chain. The Eastern Ghats are not one unbroken wall because several major east-flowing peninsular rivers cross them, including the Mahanadi, Godavari, Krishna and Cauvery. Their courses divide the range into separate sections, making option C the strongest direct evidence of discontinuity. Connection with the Himalayas is not the defining fact and is geographically misleading. The Thar Desert is a separate arid region, and the Eastern Ghats are not completely snow-covered. The conclusion follows from physical observation: if large rivers cut through a range at multiple places, the range appears broken rather than continuous.

Correct answer: D. They flow westward through rift valleys

The governing concept is the drainage pattern of the Peninsular Plateau and the influence of geological structure. Most large peninsular rivers flow eastward toward the Bay of Bengal, but the Narmada and Tapi are important exceptions. They occupy rift valleys and flow westward into the Arabian Sea, so option D correctly identifies both their direction and their structural setting. They do not rise in the Himalayas, do not flow from coral islands, and cannot form the Ganga Delta. Their westward courses are related to faulted or rifted troughs in the plateau region. Therefore the distinction is based on drainage direction and valley origin, not on the rivers’ size or water volume.

Correct answer: A. Orographic rainfall and rain shadow

The governing concept is relief rainfall, also called orographic rainfall, and the rain-shadow effect. Moisture-laden southwest monsoon winds from the Arabian Sea strike the Western Ghats and are forced to rise. Rising air cools, condenses and produces heavy rain on the western, windward slope. After crossing the crest, the air descends, becomes relatively warmer and drier, and gives the interior Deccan a rain-shadow condition. Therefore option A explains both observations. Glacial deposition and snowfall are not the normal controls here, while coral formation, lagoons, sandstorms and deltas describe unrelated environments. The contrast is caused by the mountain barrier and wind direction.

Correct answer: B. It is a north-eastern plateau part separated beyond the Rajmahal-Garo gap

The governing concept is the geological continuity and fragmentation of the ancient Peninsular Plateau. The Meghalaya Plateau, including the Garo, Khasi and Jaintia Hills, is generally regarded as a detached north-eastern extension of the Peninsular Plateau. It became separated from the main plateau region by the zone around the Rajmahal-Garo gap, while later erosion shaped its present relief. Hence option B best explains its peninsular origin. It is not a coastal segment of the Western Ghats, the highest Himalayan range, or a sandy plateau of the Thar Desert. The answer depends on geological relationship and location, not merely on the word “plateau” or on present-day height.

Correct answer: C. Being the highest main Himalayan range

Himadri, also called the Great or Inner Himalaya, is the highest and most continuous Himalayan range. Its great elevation allows temperatures to remain low, so permanent snowfields and numerous glaciers are found there. Important glaciers such as Gangotri and Yamunotri originate in the high Himalayan region, feeding major rivers. Therefore, the defining geographical relationship in the question is that Himadri is the highest main Himalayan range, making option C correct. Deccan lava flows belong to peninsular geology, river erosion of the Eastern Ghats describes another region, and the ancient Aravalli range is a separate old mountain system.

Correct answer: D. Doon valleys occur between Shiwalik and Middle Himalaya

The Shiwalik is the outermost and generally lowest Himalayan range. To its north lies the Lesser or Middle Himalaya, and elongated longitudinal valleys occur between these two ranges. Such valleys are called Doons; Dehradun is the best-known example, while Kotli and Patli Doon are other examples. This location is a useful way to identify the structural position of the Shiwalik: it forms the southern boundary of the Himalayan system, with Doon valleys immediately north of it and south of the Middle Himalaya. Hence option D is correct. The Deccan Plateau, Eastern Ghats, and Ladakh are not the characteristic settings of Doon valleys.

Correct answer: A. Iron ore, coal, and other minerals

The Chota Nagpur Plateau is widely known as a mineral-rich region of India. It contains major deposits of iron ore, coal, manganese, mica, bauxite and other minerals. The close geographical relationship between metallic ores and coal is especially important: iron ore supplies the basic raw material for iron and steel, while coal provides fuel and energy for processing. This resource combination encouraged the growth of iron-and-steel plants, engineering industries, mining centres and transport networks in and around the plateau. Therefore option A is correct. Coral and sea salt are coastal resources, glaciers and ice belong to high mountains, and sand dunes characterize arid areas rather than this mineral-industrial belt.

Correct answer: B. They are linked with the meeting region of Eastern and Western Ghats

The Nilgiri Hills occupy the elevated area where the Western Ghats and Eastern Ghats approach and connect in southern India. The name Nilgiri refers to the hill region around the junction, and the area includes important peaks such as Doddabetta. This position explains why the Nilgiris are described as a meeting or junction region of the two major peninsular ranges. Ooty is a well-known hill station located in the Nilgiris, but the decisive geographical fact is the relationship between the Eastern and Western Ghats. Thus option B is correct. The Aravalli-Vindhya connection, the Ganga-Yamuna confluence, and the Karakoram-Ladakh relationship refer to entirely different regions.

Correct answer: C. Rivers like Godavari, Krishna, and Cauvery flow toward the Bay of Bengal

Much of the Deccan Plateau has a general slope toward the east and southeast. Consequently, several major peninsular rivers rise in or near the Western Ghats and cross the plateau before draining into the Bay of Bengal. The Godavari, Krishna and Cauvery are important examples of east-flowing rivers; many build deltas near their mouths. This drainage pattern is a direct result of the plateau's relief and slope, not of Himalayan direction or a universal connection with lakes. Therefore option C is correct. Some west-flowing rivers such as the Narmada and Tapi are important exceptions, but their existence does not invalidate the general eastward drainage pattern described in the question.

Correct answer: D. Long-term weathering and erosion

The Aravalli Range is among the oldest fold mountain systems of the Indian subcontinent. Since its uplift occurred in the distant geological past, it has been exposed to weathering, running water, wind and other erosional agents for a very long period. Continuous denudation reduced and dissected the original relief, so the range is now comparatively low and discontinuous rather than sharply elevated like a young mountain system. This evidence supports option D, long-term weathering and erosion. Recent mountain building would normally produce higher, more active relief; marine coral deposition and glacial deposition are not the processes responsible for the overall identity and low profile of the Aravallis.

Correct answer: A. Karakoram, Ladakh, and Zanskar

The Trans-Himalaya refers to the high mountain systems lying north of, or beyond, the main Himalayan ranges. Karakoram, Ladakh and Zanskar are commonly included in this broad physiographic region. They have very high elevations, rugged relief, cold desert conditions and extensive snow or glaciation in suitable areas. Therefore option A is the most accurate group. Sahyadri, Nilgiri and Palani belong to the Peninsular Plateau; Vindhya, Satpura and Maikal are central Indian ranges; and Garo, Khasi and Jaintia are hills of the Meghalaya region. These alternatives are important Indian landforms but do not identify the Trans-Himalayan belt.

Correct answer: B. Major low natural passage

The Palghat Gap, or Palakkad Gap, is a broad and relatively low break in the otherwise continuous Western Ghats. It lies between the Nilgiri Hills to the north and the Anaimalai Hills to the south, providing a natural passage between Kerala and Tamil Nadu. Because it is lower than the surrounding ranges, it has supported transport, settlement and movement between the east and west sides of southern India. The key physical identity asked for is therefore a major low natural passage, making option B correct. It is not a Himalayan glacier, an Aravalli summit or an eastern coastal delta; those descriptions refer to different landforms and regions.

Correct answer: C. Major high peak of Southern Western Ghats

Anamudi is a prominent mountain peak in Kerala's Western Ghats, within the southern part of the range. Its elevation is about 2,695 metres, making it the highest peak in peninsular India and the highest peak of the Western Ghats. The name is often associated with the shape of an elephant's head, but its essential geographical identity is its location and great elevation in the southern Western Ghats. Therefore option C is correct. The Eastern Ghats are a different and generally lower discontinuous system, the Aravalli is an ancient range in northwestern India, and the Meghalaya Plateau is a separate northeastern upland region. None of those descriptions identifies Anamudi.

Correct answer: D. Kanchenjunga is linked with Sikkim and Nanda Devi with Uttarakhand

Kanchenjunga and Nanda Devi are both major Himalayan peaks, but they are associated with different regional settings. Kanchenjunga lies in the eastern Himalaya on the Sikkim–Nepal border and is strongly identified with Sikkim in Indian geography. Nanda Devi lies in Uttarakhand and is the highest peak located entirely within India. Consequently, the correct regional pairing is Kanchenjunga with Sikkim and Nanda Devi with Uttarakhand, so option D is correct. Neither peak belongs to the Deccan, Aravalli, Khasi Hills or Eastern Ghats. The question tests the ability to distinguish Himalayan peaks by their location rather than merely recognizing that both are high mountains.

Correct answer: C. These are hill units of the Southern Western Ghats

The governing geographical concept is the regional division of the Peninsular Plateau and the Western Ghats. Palani, Annamalai, and Cardamom Hills occur in the southern part of the Western Ghats, mainly across Kerala and Tamil Nadu. Their location, relief, and connection with the highlands of southern India identify them as hill units of the Southern Western Ghats. Therefore, option C is correct. The Himalayas in option A are a separate young fold mountain system in northern India; the Ganga delta in option B is a low, depositional coastal landform; and the Thar dunes in option D are arid desert features. Thus, the group belongs to southern peninsular hill geography.