Mountains and Plateaus of India

Correct answer: A. Sahyadri or Western Ghats

The correct answer is the Sahyadri, or Western Ghats. Mahabaleshwar, Lonavala and Khandala are well-known hill stations and upland locations in Maharashtra along the Sahyadri range. Sahyadri is the commonly used regional name for the Western Ghats in much of western and southern India. The Shiwalik Himalaya lies along the foothills of the Himalaya, the Purvanchal Hills belong to northeastern India, and the Ladakh Range is in the trans-Himalayan region. The governing concept is the regional identification of hill stations. Because all three places occur in Maharashtra’s Western Ghats belt, option A is the only consistent choice.

Correct answer: A. Karnataka

The correct answer is Karnataka. The Baba Budan Hills and Kudremukh Hills are important highland areas of Karnataka within the Western Ghats. Baba Budan is also historically associated with coffee cultivation, while Kudremukh is noted for forested landscapes, mineral history and rich biodiversity. Rajasthan is dominated by the Aravalli and desert regions, and Bihar and Haryana do not contain these named Western Ghats hill groups. The governing concept is the state-wise distribution of India’s major physical features. Once the Western Ghats names Baba Budan and Kudremukh are recognized, they can be placed in Karnataka, so option A is the only correct answer.

Correct answer: A. Eastern Ghats

The correct answer is the Eastern Ghats. Mahendragiri, located in the Odisha-Andhra region, and the Shevaroy Hills of Tamil Nadu are examples of hill units associated with the Eastern Ghats system. Unlike the relatively continuous Western Ghats, the Eastern Ghats are discontinuous because rivers such as the Mahanadi, Godavari, Krishna and Kaveri have cut through them. The Aravalli is a separate ancient range in western and northwestern India, the Karakoram is a high trans-Himalayan range, and the Satpura lies in central India. Thus option A correctly identifies the mountain group.

Correct answer: A. Plateau-hill region of eastern India

The correct answer is the plateau-hill region of eastern India. The Rajmahal Hills are in the eastern part of the Indian plateau system, while the Singhbhum Plateau is an important upland area of Jharkhand. Both are associated with the broader eastern Indian highland landscape and are often studied alongside the Chota Nagpur Plateau and related hill units. The western coastal plain is a narrow lowland beside the Arabian Sea, Lakshadweep is a coral-island region, and the Thar is a sandy desert plain. Therefore, option A correctly groups these two physical features by their wider regional setting.

Correct answer: A. Vindhyan region

The correct answer is the Vindhyan region. The Kaimur Range forms an eastern extension of the Vindhya system, and the Bhander Plateau is a related plateau unit in central India. These landforms are therefore studied as parts of the Vindhyan physical region. The Nilgiri region belongs to southern India, the Western Ghats form the western escarpment of the peninsula, and the Karakoram is a high mountain system in the trans-Himalaya. The governing concept is the classification of connected ranges and plateaus into regional physical divisions. Since both Kaimur and Bhander are associated with the Vindhya landscape, option A is the unambiguous answer.

Correct answer: A. More orographic rainfall from the Arabian Sea branch

The correct answer is greater orographic rainfall from the Arabian Sea branch of the southwest monsoon. The Western Ghats form a long, fairly continuous escarpment close to India’s west coast. Moist winds from the Arabian Sea are forced to rise when they meet this barrier; rising air cools, condenses and produces heavy windward rainfall. This is the governing process called orographic rainfall. The Ganga Delta, Thar Desert and Himalayan glaciers arise from different physical and climatic conditions and are not the direct effect asked about. Thus option A correctly links the continuity of the Western Ghats with enhanced rainfall.

Correct answer: A. By blocking cold Central Asian winds

The correct answer is by blocking cold Central Asian winds. The Himalaya forms a very high mountain barrier along the northern edge of the Indian subcontinent. In winter, it prevents extremely cold continental air from Central Asia from freely entering the Indian plains, helping keep northern India warmer than it would otherwise be. The range also affects the southwest monsoon by forcing moisture-bearing winds to rise and by preventing much of the moisture from escaping northward. It does not dry all rivers, move the sea or directly form black soil. Therefore option A states the relevant climatic function.

Correct answer: A. It forms a wide plateau region in southern Peninsular India

The correct answer is that the Deccan Plateau forms a wide plateau region in southern Peninsular India. It is a large triangular upland lying broadly south of the Narmada, between the Western and Eastern Ghats, and it occupies much of the interior peninsula. Large parts are formed from ancient rocks, including extensive basaltic lava flows associated with the Deccan Traps; weathering of basalt has also contributed to black soil in several areas. It is not a Himalayan range, Brahmaputra plain or coral island. Thus option A correctly explains its regional importance.

Correct answer: A. Parts of the Deccan Plateau

The governing concept is the regional division of the Peninsular Plateau. The Telangana and Karnataka plateaus lie in southern India and are conventionally treated as regional units of the larger Deccan Plateau system. The Deccan Plateau is an extensive old, elevated tableland made largely of hard crystalline rocks and, in parts, basaltic lava flows. Therefore, option A is correct. The Meghalaya Plateau is an isolated northeastern plateau, so option B belongs to a different region. Ladakh is a high-altitude Trans-Himalayan plateau, making option C geographically unsuitable. The Ganga Plain is a level depositional plain formed mainly by river sediments, not a plateau; hence option D is also incorrect.

Correct answer: A. Mahanadi, Godavari, Krishna and Cauvery

The governing concept is the discontinuous character of the Eastern Ghats. Unlike the more continuous Western Ghats, the Eastern Ghats are interrupted and dissected by major rivers flowing toward the Bay of Bengal. The Mahanadi, Godavari, Krishna and Cauvery cross or cut through different sections of this hill system, so option A is the appropriate answer. The Indus, Jhelum, Chenab and Ravi are mainly associated with the northwestern Himalayan river system, not the Eastern Ghats. Luni, Sabarmati, Mahi and Narmada are linked chiefly with western or central India. Teesta, Dihang, Lohit and Dibang belong largely to the northeastern Himalayan region. Thus the river group in A best explains the range's discontinuity.

Correct answer: A. Purvanchal and North-east India

The governing concept is the regional classification of the hills along India's northeastern frontier. The Naga, Mizo and Patkai Hills form important parts of the Purvanchal hill system, which bends around the eastern end of the Himalayas and extends through northeastern India. Consequently, option A is correct. These hills are not branches of the Aravallis, which are ancient ranges of western India, so B is wrong. The Satpuras lie across central India and have a different location and structure, ruling out C. The Nilgiris belong to the southern Western Ghats and are far from the northeastern hill system, so D is also incorrect. Their location and continuity with the northeastern ranges identify A.

Correct answer: A. Mineral region of Jharkhand

The governing concept is the relationship between geological structure, plateau regions and mineral resources. The Singhbhum Plateau lies in Jharkhand and is part of the mineral-rich Chota Nagpur Plateau region. Its ancient hard rocks and associated geological formations contain important deposits, including iron ore and other minerals, which explains its industrial significance. Therefore, option A is correct. Kerala's backwaters are low-lying coastal and lagoon environments, not the Singhbhum upland. Rajasthan's sandy region is associated with the Thar Desert and has a different physical setting. Sikkim's glacial landscapes belong to the high Himalayas. These contrasts show why B, C and D do not fit the location or resource identity of Singhbhum.

Correct answer: A. Deccan Plateau region

The governing concept is the regional setting of subsidiary ranges within India's Peninsular Plateau. The Balaghat Range is associated with the Deccan Plateau system in central-southern India, particularly around the Maharashtra and adjoining Karnataka region. It belongs to an old, dissected plateau landscape rather than to a young folded Himalayan system. Thus option A is correct. The Ganga Plain is a flat alluvial depositional region and does not contain the Balaghat Range, so B is unsuitable. Sikkim Himalaya is a high, young mountain region in the northeast, not a peninsular plateau range. The Meghalaya Plateau is also in northeastern India and is geographically separate. Hence C and D are ruled out by both location and landform type.

Correct answer: A. As an old rocky plateau region of Karnataka

The governing concept is the identification of ancient geological regions in Peninsular India. The Dharwar region is associated with Karnataka and consists largely of very old crystalline rocks and plateau terrain. It is also important in the study of mineral-bearing formations, although the question primarily asks for its physical identity. Therefore, option A is correct: it is an old rocky plateau region of Karnataka. The Ganga floodplain is a young, flat alluvial depositional surface, so B describes a completely different landform. A marine coral island is formed by biological accumulation in warm shallow seas, not by ancient continental rocks, ruling out C. The outer Himalayas are younger folded mountain ranges, not the Dharwar plateau, so D is incorrect.

Correct answer: A. Trans-Himalayan region

The governing concept is the division of the Himalayan system into major physiographic regions. The Kailash, Ladakh and Karakoram ranges lie north of, or beyond the main Himalayan ranges and are therefore grouped within the Trans-Himalayan region. This region contains very high, rugged and generally cold mountain and plateau landscapes, so option A is correct. The Eastern Ghats are discontinuous hills along eastern Peninsular India and have a completely different location. The Deccan Trap is a basaltic lava plateau of Peninsular India, not a high mountain region in the north. The Bundelkhand Plateau is an ancient rocky plateau in central India. Thus B, C and D describe other landforms and cannot identify these ranges.

Correct answer: A. Himalayas and Deccan Plateau

The governing concept is the classification of major physical features of India. The Himalayas are a mountain system, formed by young fold processes and characterized by great height and steep slopes. The Deccan Plateau is an elevated, broadly level upland in peninsular India, so it is a plateau. Therefore, option A correctly combines one mountain feature with one plateau feature. Chilika and Wular in option B are lakes, while Ganga and Yamuna in option C are rivers. Thar is a desert and Sundarbans is a delta and mangrove region, so option D does not contain the required pair.

Correct answer: A. Vindhya, Satpura, and Malwa-Bundelkhand region

The governing concept is the relief structure of Central India, where elevated plateaus occur together with old hill and mountain ranges. The Vindhya and Satpura ranges, along with the Malwa and Bundelkhand plateau regions, illustrate this mixed landscape. Option A is therefore the best answer because it names both upland plateaus and significant ranges of central India. The Andaman and Lakshadweep areas in option B are island groups, not the central Indian relief system. The Ganga Delta is a low depositional plain, and the western coastal plain is a narrow coastal lowland; neither represents the stated mixture.

Correct answer: A. Nilgiri, Annamalai, Palani, and Cardamom

The governing concept is the regional distribution of Indian hill ranges. The Nilgiri, Annamalai, Palani and Cardamom Hills lie in southern India, mainly around the Western Ghats and their adjoining uplands. Thus option A is the correct group. Option B lists Himalayan ranges and the Karakoram, all associated with the far north. Option C lists important hills of the northeastern region, especially Meghalaya and adjoining areas. Option D names central Indian ranges. Comparing the geographical location of each group, only option A consistently identifies South Indian hills.

Correct answer: A. Western Ghats form a long and less broken range along the western coast

The governing concept is the comparative structure of India's two coastal mountain systems. The Western Ghats run close to and parallel with the western coast as a relatively long, elevated and less interrupted escarpment. The Eastern Ghats are more discontinuous because several large peninsular rivers, including the Mahanadi, Godavari, Krishna and Kaveri systems, cut across them. Hence option A gives the correct reason. Option B places the range in the wrong physical region, option C incorrectly makes it part of the Himalayas, and option D confuses a mountain escarpment with desert dunes.

Correct answer: A. Himadri, Himachal, and Shiwalik

The governing concept is the parallel arrangement of the Himalayan ranges from north to south. The Great Himalaya, or Himadri, is the highest and northernmost major range; the Lesser Himalaya, or Himachal, lies south of it; and the Shiwalik forms the outer and southernmost foothill belt. Therefore option A gives the correct sequence. Aravalli, Vindhya and Satpura belong to different parts of peninsular India. Nilgiri, Palani and Annamalai are southern hill groups, while Garo, Khasi and Jaintia are northeastern hills rather than the main parallel Himalayan divisions.

Correct answer: B. Basaltic lava rocks

The governing concept is the relationship between parent rock and soil formation. Much of the Deccan Plateau is made of old basaltic lava flows known as the Deccan Traps. Long-term weathering and breakdown of these dark, iron- and magnesium-rich rocks produced the characteristic black or regur soil. Therefore option B is correct. Coral rocks do not form the broad interior soil cover of the Deccan, marine sand is associated with coastal environments, and glacial deposits are typical of areas affected by former ice movement. The answer follows the geology of the plateau rather than simply the colour of the soil.

Correct answer: C. They flow westward into the Arabian Sea

The governing concept is the drainage pattern of Peninsular India. Most major peninsular rivers, such as the Mahanadi, Godavari, Krishna and Kaveri, generally flow eastward toward the Bay of Bengal. Narmada and Tapi are notable exceptions: they flow westward through structural troughs or rift-valley settings and enter the Arabian Sea. Thus option C is correct. They do not flow north into the Himalayas, do not form deltas in the Ganga Plain, and do not end only in lakes. Their westward direction and distinctive valley setting explain the contrast.

Correct answer: D. Western Ghats are more continuous and escarpment-like

The governing concept is a comparison of the physical form of India's Western and Eastern Ghats. The Western Ghats are generally higher, more continuous and more escarpment-like, standing close to the western coastal plain. The Eastern Ghats are lower in overall continuity because major rivers have dissected them into separate blocks and hills. Therefore option D is correct. Option A reverses the comparison. Option B is wrong because both systems belong to the Peninsular Plateau, not the Himalayas. Option C is also false because the Western Ghats are a land mountain system, not a submerged feature.

Correct answer: A. Lower height and heavy erosion

The governing concept is the geomorphic effect of long geological age. The Aravalli Range is among the oldest fold mountain systems in India. Over very long periods, weathering, erosion and denudation reduce relief, round the slopes and lower the heights of a mountain range. Consequently, its relatively low and highly eroded form is evidence of ancient age, making option A correct. Permanent snow cover would indicate a very high or cold environment, not simply old age. Recent volcanic activity and marine coral formation describe different geological processes and do not explain the present character of the Aravallis.

Correct answer: B. They force moist monsoon winds to rise

The governing concept is orographic rainfall, in which moist air is forced to rise over a highland barrier. During the monsoon, moisture-laden winds from the Bay of Bengal move toward the northeastern hills. The Khasi Hills make these winds ascend; rising air cools, condenses and produces very heavy rainfall on the windward slopes. Therefore option B is correct. The hills are not in the Thar Desert, are not the highest Himalayan range, and their soil composition does not create monsoon rainfall. The explanation depends on wind direction, relief and condensation, not on soil or snow.