Geography Set 36
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📌 Environment • Forests
Q.1) Mangrove forests are highly specialized ecosystems found in the coastal regions of India. According to the India State of Forest Report, which state consistently accounts for the highest percentage of mangrove cover in the country?
Ans > West Bengal
- The Sundarbans Delta: West Bengal holds the absolute largest area of mangrove cover in India primarily due to the massive Sundarbans delta. Formed by the confluence of the Ganges, Brahmaputra, and Meghna rivers, this delta alone constitutes nearly half of India’s total mangrove forest area.
- Ecological Adaptations: The mangroves here are highly evolved to survive in hostile, saline environments. They feature unique physical adaptations such as pneumatophores (upward-growing breathing roots) that allow them to absorb oxygen directly from the air in waterlogged, anaerobic soils.
- Global Biodiversity Hub: Beyond its immense geographic spread, this specific mangrove ecosystem is globally renowned as a UNESCO World Heritage site. It serves as a vital ecological buffer against devastating coastal cyclones and remains the only mangrove forest in the entire world that acts as a natural habitat for the endangered Royal Bengal Tiger.
📌 Drainage System • Peninsular Rivers
Q.2) The Mahanadi River is a major east-flowing river in Peninsular India that forms a massive delta before entering the Bay of Bengal. From which geographical location does the Mahanadi originate?
Ans > Sihawa in Raipur district, Chhattisgarh
- Origin and Course: The Mahanadi River, which translates to “Great River,” originates from the Sihawa mountain range located in the Dhamtari district (historically part of the Raipur district) of Chhattisgarh. From this origin point, it flows eastward through the states of Chhattisgarh and Odisha before finally draining into the Bay of Bengal.
- Catchment Area: The river boasts one of the most active silt-depositing basins in the Indian subcontinent. Its massive drainage basin spans approximately 141,600 square kilometers, making it a critical lifeline for agriculture, particularly for rice cultivation in the fertile plains of Chhattisgarh and the coastal delta of Odisha.
- Hydrological Infrastructure: The Mahanadi is highly prone to severe seasonal flooding. To control these devastating floods and harness hydroelectric power, the monumental Hirakud Dam was constructed across it near Sambalpur in Odisha. This dam remains one of the longest earthen dams ever built in the world.
📌 Drainage System • Peninsular Rivers
Q.3) The Godavari River is the largest river system in Peninsular India. Due to its massive size, extent, and age, it is frequently referred to by which traditional name?
Ans > Vridha Ganga (Old Ganga)
- Scale and Prominence: The Godavari is the longest river in South India and the second-longest river in the entire country after the Ganges, stretching for approximately 1,465 kilometers. Due to its enormous drainage basin, length, and geological age, it is most commonly referred to as the “Vridha Ganga” (Old Ganga) or “Dakshin Ganga” (Ganga of the South).
- Geographical Trajectory: Originating from the Brahmagiri Mountain at Trimbakeshwar in the Nashik district of Maharashtra, the river journeys across the Deccan Plateau. It cuts through the states of Maharashtra, Telangana, and Andhra Pradesh before emptying into the Bay of Bengal.
- Cultural Significance: Much like the Ganges in the north, the Godavari holds immense religious and cultural importance. The riverbanks host the Kumbh Mela at Nashik every twelve years, drawing millions of pilgrims. Its massive, fertile delta region in Andhra Pradesh serves as a crucial agricultural hub, often dubbed the “Rice Bowl” of the state.
📌 Geography • Soils
Q.4) Laterite soils are generally infertile and poor in nitrogen, phosphorus, and calcium. By what specific geological and climatic process are these soils primarily formed?
Ans > Intense leaching due to alternating wet and dry tropical spells
- The Leaching Process: Laterite soils are the direct result of intense tropical weathering. In regions experiencing heavy monsoon rainfall followed by intense dry periods, torrential rains wash away (leach) the soluble, siliceous matter and essential nutrients from the topsoil, leaving behind a heavily degraded surface layer.
- Chemical Composition: Because the lighter silica is removed, the remaining soil becomes heavily concentrated with iron and aluminum oxides. It is the high concentration of iron oxide that gives laterite soil its distinct, characteristic rusty-red appearance. This composition makes the soil highly acidic and structurally hard when exposed to air.
- Agricultural Challenges: Naturally, these soils are quite infertile and highly deficient in nitrogen, phosphorus, and organic matter. However, with heavy applications of fertilizers and proper irrigation management, laterite soils can be adapted for cultivating specific plantation crops such as cashew nuts, tea, coffee, and rubber, particularly in states like Kerala, Karnataka, and Tamil Nadu.
📌 Energy • Nuclear Power
Q.5) The Kudankulam Nuclear Power Plant represents one of India’s highest-capacity nuclear facilities, built with Russian collaboration. In which state is it located?
Ans > Tamil Nadu
- Geographical Location: The Kudankulam Nuclear Power Plant (KKNPP) is strategically situated in the Tirunelveli district of Tamil Nadu, right near the southern tip of the Indian peninsula. It is the single largest nuclear power station currently operating in India by installed capacity.
- International Collaboration: This massive energy infrastructure project was born from an inter-governmental agreement signed in 1988 between the former Soviet Union (now driven by Russian state corporation Rosatom) and the Government of India. The facility utilizes advanced Russian-designed Water-Water Energetic Reactors (VVER), which are a type of pressurized water reactor.
- Energy Generation Strategy: The plant was developed to significantly boost the baseload electricity supply for the southern power grid, feeding highly industrialized states like Tamil Nadu, Kerala, and Karnataka. Despite facing localized protests regarding environmental and safety concerns following the Fukushima disaster, the plant successfully achieved full commercial operation, highlighting India’s commitment to expanding its civilian nuclear energy capabilities.
📌 Geography • Lakes
Q.6) Pulicat Lake is the second largest brackish water lagoon in India after Chilika Lake. It spans the border of which two Indian states?
Ans > Andhra Pradesh and Tamil Nadu
- Geographical Extent: Pulicat Lake is an expansive coastal lagoon located on the Coromandel Coast of South India. The vast majority of the lake’s area (roughly 96%) falls within the Tirupati district of Andhra Pradesh, while the remaining southern tip extends into the Tiruvallur district of Tamil Nadu.
- Barrier Island Protection: This delicate lagoon ecosystem is physically separated from the turbulent waters of the Bay of Bengal by the barrier island of Sriharikota. This specific island acts as a natural breakwater and is famously home to the Satish Dhawan Space Centre, India’s primary orbital launch site operated by ISRO.
- Avian Sanctuary: The lake is a biologically rich wetland that acts as a vital stopover for migratory birds. It is internationally recognized for the Pulicat Lake Bird Sanctuary, which attracts thousands of Greater Flamingos, pelicans, and storks every winter, making it a critical hub for ornithological research and eco-tourism.
📌 Climate • Temperature
Q.7) India’s climate features extreme temperature variations. Which of the following locations in Rajasthan is recognized for recording some of the highest maximum temperatures in the country, often crossing 50°C during summer?
Ans > Phalodi
- Meteorological Record: Phalodi, a town situated in the Jodhpur district of Rajasthan, holds a significant place in India’s meteorological history. On May 19, 2016, the local weather station recorded a staggering maximum temperature of 51.0°C (123.8°F). This stands as the highest temperature ever reliably recorded in the Indian subcontinent.
- Climatic Drivers: The extreme heat in this specific region is driven by its location within the heart of the Thar Desert. The town experiences intense solar insolation during the pre-monsoon summer months, coupled with dry, scorching anti-cyclonic westerly winds coming in from the arid regions of Pakistan and the Middle East, leading to severe heatwaves.
- Geographical Setting: Often referred to as the “Salt City” due to its numerous salt industries operating on local saline depressions, Phalodi’s barren, sandy topography exacerbates the heating effect. The lack of vegetation and water bodies ensures that daytime heat is heavily trapped and radiated back, creating an extreme microclimate.
📌 Political Geography • Borders
Q.8) The Durand Line was established in 1893 as a demarcated boundary between British India and the Emirate of Afghanistan. Today, India considers the Durand Line as its official international border with Afghanistan, touching which specific region?
Ans > Pakistan-Occupied Kashmir (PoK)
- Historical Context: The Durand Line was originally drawn in 1893 following an agreement between Sir Mortimer Durand, a British diplomat, and Abdur Rahman Khan, the Afghan Amir. It was designed to fix the political limits of the British Indian Empire’s sphere of influence and stabilize the volatile frontier region.
- Geopolitical Reality: Officially, the Government of India maps show a 106-kilometer border shared with Afghanistan along the Wakhan Corridor. However, this specific geographical region falls entirely within Gilgit-Baltistan, a territory that is currently administered by Pakistan and internationally recognized as part of Pakistan-Occupied Kashmir (PoK).
- Strategic Implications: Because the border lies in PoK, India does not have direct, unimpeded land access to Afghanistan today. This geopolitical barrier has forced India to rely on alternative transit routes, such as the Chabahar Port in Iran and dedicated air-freight corridors, to maintain trade and strategic ties with the Afghan nation.
📌 Environment • National Parks
Q.9) The “Valley of Flowers” is a vibrant, high-altitude National Park famous for its endemic alpine flowers and outstanding natural beauty. In which state is it situated?
Ans > Uttarakhand
- Geographical Setting: The Valley of Flowers National Park is nestled high in the Zanskar Range of the Himalayas, located in the Chamoli district of Uttarakhand. Lying at an impressive altitude of around 3,600 meters above sea level, the valley remains covered in thick snow for over six months of the year.
- Botanical Wealth: When the snow melts during the monsoon season (July to September), the valley transforms into a spectacular carpet of vivid colors. It hosts over 500 species of high-altitude wildflowers, including the rare Himalayan blue poppy, the Brahma Kamal, and various endemic orchids, making it a paradise for botanists and trekkers.
- Conservation Status: Due to its immense ecological value and pristine beauty, the valley was declared a National Park in 1982. Later, in 2005, it was designated as a UNESCO World Heritage Site, serving as an extension to the rugged Nanda Devi National Park to form a massive, protected biosphere reserve.
📌 Political Geography • North-East
Q.10) The state of Manipur occupies a highly strategic position in North-East India. Due to its scenic beauty and rich culture, which prominent Indian leader described it as the “Jewel of India”?
Ans > Jawaharlal Nehru
- The Prime Ministerial Visit: Jawaharlal Nehru, the first Prime Minister of independent India, was deeply captivated by the state’s extraordinary natural landscapes during his visits to the North-East. He famously coined the phrase “Jewel of India” to describe Manipur’s unique blend of topographical beauty and vibrant cultural heritage.
- Topographical Splendor: Manipur is characterized by a central, oval-shaped, highly fertile valley surrounded by layers of lush blue mountains. This valley houses the famous Loktak Lake—the largest freshwater lake in Northeast India—which is globally unique for its “phumdis” (floating islands of vegetation) and the endangered Sangai deer.
- Cultural Richness: Beyond geography, Nehru’s description acknowledged the state’s profound cultural wealth. Manipur has a deeply rooted tradition of classical dance (Manipuri Raas Leela), indigenous sports, and exquisite handloom weaving, making it a cultural crown jewel nestled in the easternmost corner of the Indian subcontinent.
📌 Drainage System • Brahmaputra
Q.11) The Brahmaputra River originates in Tibet as the Yarlung Tsangpo. Through which Indian state does it first enter the Indian subcontinent, taking a dramatic U-turn at the Namcha Barwa peak?
Ans > Arunachal Pradesh
- The Syntaxial Bend: Originating near Mount Kailash in Tibet as the Yarlung Tsangpo, the river flows eastward parallel to the Himalayas for over a thousand kilometers. Upon reaching the towering peak of Namcha Barwa, it executes a dramatic, hairpin U-turn—geologically known as a syntaxial bend—cutting deep, treacherous gorges through the mountains.
- Entry into India: After navigating this violent drop in elevation, the river enters the Indian subcontinent explicitly through the mountainous state of Arunachal Pradesh. In this region, it is locally known as the Siang or Dihang River, characterized by rapid, turbulent water flows ideal for high-potential hydroelectric projects.
- Transformation into Brahmaputra: The Dihang continues its journey southward, rapidly descending from the hills. Upon reaching the flatter plains of Assam, it is joined by two massive tributaries—the Dibang and the Lohit. Only after this grand confluence does the massive, braided waterway officially take the name “Brahmaputra.”
📌 Resources • Minerals
Q.12) The Bailadila range is famous for its world-class, highly mechanized open-cast mines. Which specific mineral is abundantly extracted from this region?
Ans > Iron ore
- Geological Richness: The Bailadila range, located in the Dantewada district of the state of Chhattisgarh, translates to “Hump of an Ox” due to the distinct shape of its hills. This region is globally renowned for holding massive deposits of incredibly high-grade hematite iron ore, which is essential for premium steel production.
- Mining Infrastructure: To extract this dense wealth, the region operates some of the most highly mechanized, large-scale open-cast mines in all of Asia. Managed primarily by the National Mineral Development Corporation (NMDC), the mining complexes here form the backbone of central India’s heavy metallurgical economy.
- Export and Logistics: The iron ore extracted from Bailadila is of such superior quality that a significant portion is dedicated exclusively for export, primarily to steel mills in Japan and South Korea. The ore is transported via a dedicated slurry pipeline and a special broad-gauge railway line directly to the deep-water port of Visakhapatnam in Andhra Pradesh.
📌 Climate • Pre-Monsoon
Q.13) “Bardoli Chheerha” is the local name given to the violent evening thunderstorms that occur during the pre-monsoon season, causing damage to crops and property. In which state are they known by this name?
Ans > Assam
- Meteorological Phenomenon: During the pre-monsoon summer months of April and May, intense heating of the landmass creates localized low-pressure areas. This results in violent, squally winds accompanied by heavy rainfall, lightning, and occasionally hail. These severe local storms are a hallmark of the eastern Indian climate.
- Local Terminology: While these storms are infamously known as ‘Kal Baisakhi’ (the calamity of the month of Baisakh) in West Bengal, they are traditionally referred to as “Bordoichila” or “Bardoli Chheerha” in the state of Assam. The term is deeply woven into Assamese folklore, personifying a married woman rushing back to her maternal home.
- Agricultural Impact: Despite their destructive potential regarding property and communication lines, these pre-monsoon showers hold immense economic value. In Assam, the rain brought by Bardoli Chheerha provides the critical moisture required for the early cultivation of vital cash crops, specifically the region’s famous tea plantations, spring rice (Ahu paddy), and jute.
📌 Infrastructure • Dams
Q.14) The Bhakra-Nangal Dam is one of the highest gravity dams in the world and a cornerstone of the Green Revolution in North India. Across which river is this massive dam built?
Ans > Sutlej
- Engineering Marvel: The Bhakra-Nangal multipurpose river valley project is an extraordinary feat of post-independence engineering. The Bhakra Dam, standing at a towering 226 meters, is constructed across the fast-flowing Sutlej River in the Bilaspur district of Himachal Pradesh, right near the Punjab border. The Nangal dam is situated slightly downstream.
- The Govind Sagar Reservoir: The massive concrete structure creates the Govind Sagar reservoir, which holds billions of cubic meters of water. This stored water is carefully regulated to provide a continuous, reliable water supply for irrigation and to turn the massive turbines of the dam’s hydroelectric power stations.
- Catalyst for Agriculture: The project essentially serves as the agricultural lifeline for the states of Punjab, Haryana, and Rajasthan. By taming the Sutlej River and redirecting its waters via an extensive canal network, the dam provided the irrigation security necessary to trigger the Green Revolution, transforming North India into the nation’s breadbasket.
📌 Environment • Biosphere Reserves
Q.15) The Nokrek Biosphere Reserve is known for its rich flora and fauna, notably being the home of the rare red panda and the progenitor of cultivated citrus fruits (Citrus indica). In which state is it located?
Ans > Meghalaya
- Geographical Designation: The Nokrek Biosphere Reserve encompasses the Nokrek National Park and is located in the rugged West Garo Hills district of Meghalaya. It centers around Nokrek Peak, which is the highest point of the Garo Hills range, offering a relatively pristine and undisturbed tropical and sub-tropical forest ecosystem.
- Citrus Gene Sanctuary: The reserve holds immense global agricultural importance because it harbors the natural habitat of Citrus indica (locally known as Memang Narang). This rare, wild plant is widely scientifically recognized as the mother or progenitor of all cultivated citrus fruits in the world, making Nokrek a vital genetic sanctuary.
- Faunal Biodiversity: In addition to its unique botanical wealth, Nokrek is a critical haven for wildlife. It is one of the few protected areas in India that supports a population of the elusive and endangered Red Panda. The dense forests also house Hoolock gibbons, Asian elephants, and a wide variety of unique avifauna.
📌 Geography • Mountain Peaks
Q.16) Guru Shikhar is the highest peak of the Aravalli Range, providing a panoramic view of the surrounding landscape. What is its exact elevation?
Ans > 1,722 m
- Geological Significance: The Aravalli Range is one of the oldest fold mountain systems in the world, heavily eroded over hundreds of millions of years. Guru Shikhar represents the absolute highest surviving point of this ancient geological formation, serving as a vital geographical marker in western India.
- Elevation and Topography: Standing at a precise elevation of 1,722 meters (approximately 5,650 feet) above sea level, Guru Shikhar is located near the famous hill station of Mount Abu in the Sirohi district of Rajasthan. Its height provides a stark contrast to the surrounding arid plains of the Thar Desert.
- Cultural and Astronomical Hub: The peak is not only a geographical marvel but also a site of deep religious significance, housing the temple of Dattatreya (an incarnation of the Hindu Trinity). Additionally, due to the high altitude and clear skies, the peak hosts the Mount Abu Observatory, operated by the Physical Research Laboratory.
📌 Political Geography • Borders
Q.17) India shares its eastern border with Myanmar along a series of rugged mountain ranges. Which of the following North-Eastern states does NOT share an international boundary with Myanmar?
Ans > Assam
- The Bordering States: India shares a long, porous, and heavily forested 1,643-kilometer international border with Myanmar (formerly Burma). This border is completely flanked by four specific North-Eastern states: Arunachal Pradesh to the north, followed southward by Nagaland, Manipur, and finally Mizoram.
- The Geographical Barrier: The border itself is defined by a series of rugged mountain ranges collectively known as the Purvanchal Range, which includes the Patkai Bum, Naga Hills, and Mizo Hills. These steep, jungle-clad mountains form a formidable natural barrier between the Indian subcontinent and Southeast Asia.
- Assam’s Landlocked Position: Assam, despite being the central hub and largest economy of the Northeast, is geographically landlocked by the other “Sister States.” It shares international borders with Bhutan to the north and Bangladesh to the south, but it does not extend far enough east to touch Myanmar.
📌 Infrastructure • Canals
Q.18) The Buckingham Canal is a historic, 420-kilometer-long freshwater navigation canal running parallel to the Coromandel Coast. Which two states does this canal traverse?
Ans > Andhra Pradesh and Tamil Nadu
- Historical Engineering: Constructed in phases during the British colonial era (starting in 1806), the Buckingham Canal was a monumental inland waterway project. It was essentially designed as a safe, sheltered navigational route running parallel to the rough waters of the Bay of Bengal, protecting cargo ships from coastal cyclones.
- The Geographical Route: At its peak length, the canal stretched from the Kakinada district in Andhra Pradesh, flowing southward straight through the heart of Chennai, and terminating in the Viluppuram district of Tamil Nadu. It seamlessly connected a series of natural backwaters, estuaries, and major rivers like the Krishna and Godavari.
- Decline and Current Status: Before the widespread dominance of railways and motorized road transport, the canal was the primary trade artery for moving salt, firewood, and agricultural produce. Today, due to severe urban encroachment, industrial pollution, and siltation (especially around Chennai), large stretches of the canal are unnavigable and biologically dead.
📌 Geography • Glaciers
Q.19) The Siachen Glacier is the longest glacier in the Indian Himalayas and is famously known as the world’s highest battlefield. In which specific mountain range is it located?
Ans > Karakoram Range
- Geographical Scale: The Siachen Glacier is a massive river of ice located in the eastern Karakoram range in the Himalayas. Stretching approximately 76 kilometers in length, it holds the distinction of being the longest glacier in the Karakoram and the second-longest in the world’s non-polar areas.
- Strategic Military Importance: The glacier lies just northeast of point NJ9842, the exact spot where the demarcated Line of Control (LoC) between India and Pakistan abruptly ends. Due to undemarcated territory beyond this point, India launched Operation Meghdoot in 1984 to secure the glacier, turning the frozen expanse into the highest militarized zone on Earth.
- Extreme Climate and Terrain: Altitudes in the Siachen region range from 3,620 meters at its snout to well over 5,700 meters at the Saltoro Ridge. The troops stationed here battle against some of the most hostile weather conditions on the planet, facing frequent deadly avalanches and temperatures that can plummet to minus 50°C.
📌 Geography • Islands
Q.20) Pamban Island (also known as Rameswaram Island) is separated from mainland India by the Pamban Channel. In which body of water is this highly prominent island situated?
Ans > Gulf of Mannar
- Geographical Location: Pamban Island, widely referred to as Rameswaram Island, is a major geographical feature located between peninsular India and the island nation of Sri Lanka. It sits strategically in the biologically diverse waters of the Gulf of Mannar, bordering the shallow Palk Bay to its north.
- Infrastructure Marvel: The island was physically separated from the Indian mainland until the British constructed the iconic Pamban Bridge in 1914. This historic railway bridge, later supplemented by a modern road bridge, spans the turbulent sea channel and remains an engineering marvel, featuring a unique cantilever mechanism to let ships pass.
- Religious and Historical Significance: The island holds immense cultural gravity due to the presence of Rameswaram, one of the holiest pilgrimage sites for Hindus (part of the Char Dham). Furthermore, the southeastern tip of the island features Dhanushkodi, the abandoned “ghost town” that marks the starting point of the mythical Ram Setu (Adam’s Bridge) leading to Sri Lanka.
📌 Drainage System • Rivers
Q.21) The Jhelum River is a major tributary of the Indus and is the lifeline of the Kashmir Valley. It originates from a beautiful, deep blue spring located at the base of the Pir Panjal range. What is the name of this spring?
Ans > Verinag Spring
- The Source of the Jhelum: The Jhelum River takes its birth from the Verinag Spring, a stunning, deep-blue octagonal pool situated at the foothills of the Pir Panjal mountain range in the Anantnag district of Jammu and Kashmir. The spring itself was enclosed in a beautifully landscaped garden built by the Mughal Emperor Jahangir.
- Course Through the Valley: After emerging from Verinag, the river flows gently northwest, meandering through the broad, lush plains of the Kashmir Valley. It passes directly through the city of Srinagar, feeding into the famous Dal Lake and Wular Lake (the largest freshwater lake in India) before entering deep gorges to cross the LoC.
- Economic Lifeline: The Jhelum is the absolute economic and agricultural backbone of the Kashmir region. Its waters irrigate the highly fertile valley floor, supporting massive apple orchards and saffron fields. Furthermore, the river facilitates vital inland water transport and generates essential hydroelectric power via projects like the Uri Dam.
📌 Infrastructure • Ports
Q.22) Among India’s major ports, which one holds the distinction of being the only major riverine port, situated roughly 203 kilometers inland from the sea?
Ans > Syama Prasad Mookerjee Port (Kolkata)
- Riverine Location: Unlike all other major Indian ports that sit directly on the open coastline, the Syama Prasad Mookerjee Port (formerly known as the Kolkata Port Trust) is uniquely located heavily inland. It sits approximately 203 kilometers from the Bay of Bengal, perched on the left bank of the Hooghly River.
- Historical Supremacy: Developed by the British East India Company, it is the oldest operating port in India. For over a century, it served as the premier commercial gateway to the entire eastern subcontinent, exporting massive quantities of jute, tea, and coal drawn from its vast, resource-rich hinterland.
- Navigational Challenges: Because it is a riverine port, the Hooghly River constantly brings down massive volumes of silt. To keep the navigational channel deep enough for large modern cargo vessels, the port authority must engage in continuous, expensive, and intensive dredging operations throughout the year.
📌 Geography • Plateaus
Q.23) The Malwa Plateau occupies a large central position in India, forming a triangle based on the Vindhyan Hills. What geological material predominantly constitutes the Malwa Plateau?
Ans > Basaltic rocks of the Deccan Traps
- Volcanic Origins: Millions of years ago, intense volcanic activity created massive lava floods across central and western India. Consequently, the Malwa Plateau is almost entirely composed of the basaltic rocks that make up the northern extension of the famous Deccan Traps, forming a rigid and highly elevated tableland.
- Soil and Agriculture: Over millennia, the intense weathering of these ancient basaltic rocks has resulted in the formation of deep, heavy black soil (Regur). This specific type of soil is highly moisture-retentive and extremely fertile, turning the Malwa Plateau into an agricultural powerhouse ideal for cultivating cotton, soybeans, and wheat.
- Topographical Features: The plateau features a gently rolling, undulating topography with an average elevation of around 500 meters. It is bound by the rugged Vindhya Range to the south and the Aravalli Range to the northwest, and acts as a major drainage divide, with its northern rivers flowing into the Yamuna and southern ones feeding the Narmada system.
📌 Infrastructure • Dams
Q.24) The Sardar Sarovar Dam is one of the largest and most controversial water resource projects in India. It is built across the Narmada River in which state?
Ans > Gujarat
- Scale and Infrastructure: The Sardar Sarovar Dam is an immense gravity dam constructed across the Narmada River near the town of Kevadia in Gujarat’s Narmada district. It is the centerpiece and the largest structure within the massive Narmada Valley Project, ranking as the second-largest concrete gravity dam in the world by volume.
- Interstate Resource Sharing: The dam was designed as a massive multipurpose project aimed at resolving chronic water shortages. Its vast reservoir and complex canal network provide critical irrigation water and drinking supplies to the drought-prone regions of Saurashtra and Kutch in Gujarat, while the hydroelectric power generated is shared among Gujarat, Madhya Pradesh, and Maharashtra.
- Social Controversy: The project triggered decades of intense controversy and legal battles. Spearheaded by the Narmada Bachao Andolan (NBA), massive protests highlighted the severe environmental degradation and the displacement of hundreds of thousands of indigenous people whose villages and forests were systematically submerged by the rising reservoir waters.
📌 Climate • Monsoons
Q.25) During the winter months (November to January), the Tamil Nadu coast (Coromandel Coast) receives its maximum rainfall. Which meteorological phenomenon is primarily responsible for this?
Ans > The North-East Monsoon (Retreating Monsoon)
- The Reversal of Winds: While the rest of India receives over 75% of its annual rainfall from the advancing South-West Monsoon during summer, the Coromandel Coast remains relatively dry. As winter approaches, the wind patterns entirely reverse direction, blowing from the northeast towards the southwest, marking the onset of the Retreating Monsoon.
- Moisture Absorption Mechanism: These North-East winds originate over land and are initially dry. However, as they blow over the massive expanse of the Bay of Bengal, they absorb significant amounts of moisture. Upon hitting the eastern coast of peninsular India, they dump this moisture as heavy, cyclonic rain.
- Agricultural Lifeline: This phenomenon is absolutely critical for the state of Tamil Nadu and parts of coastal Andhra Pradesh. It provides the region with nearly 50% to 60% of its total annual rainfall, filling up dry reservoirs, replenishing groundwater tables, and ensuring the success of the crucial winter (Rabi) cropping season.
📌 Geomorphology • Landforms
Q.26) The ‘Bhur’ is a distinct geomorphological feature found in the Upper Ganga plain. What exactly does the term ‘Bhur’ refer to?
Ans > Elevated, undulating tracts formed by wind-blown sand deposits during the Pleistocene
- Geomorphological Formation: ‘Bhurs’ are highly unique, localized geological formations that contrast sharply with the flat alluvial plains. They are essentially elevated, undulating, and sandy ridges that were formed by the accumulation of wind-blown sand during the intense dry and arid periods of the Pleistocene epoch.
- Regional Distribution: These specific sandy tracts are predominantly found on the eastern banks of the major rivers flowing through the Upper Ganga-Yamuna Doab region, specifically scattered across the western and central districts of modern-day Uttar Pradesh. They rise several meters above the surrounding flat floodplains.
- Agricultural Implication: Because they are composed mostly of coarse sand, Bhur soils are highly porous and exhibit very poor water-holding capacity. Consequently, they are generally infertile and agriculturally challenging compared to the surrounding highly fertile alluvial soils (Khadar and Bhangar), requiring specialized crop management and intense irrigation.
📌 Geography • Hill Stations
Q.27) The famous hill station of Kodaikanal, known for its scenic lakes and pleasant climate, is located in which specific range of the Western Ghats?
Ans > Palani Hills
- Geographical Location: Kodaikanal, often referred to as the “Princess of Hill Stations,” is perched at a high altitude of over 2,000 meters (6,500 feet). It is situated atop the Palani Hills, which are a major eastward-extending spur of the formidable Western Ghats in the Dindigul district of Tamil Nadu.
- Climate and Ecology: Due to its significant elevation, Kodaikanal features a cool, subtropical highland climate that provides a stark contrast to the sweltering plains of southern India below. The surrounding ecosystem consists of thick shola forests and rolling grasslands that house unique flora, including the famous Kurinji flower which blooms only once every 12 years.
- Historical Development: Unlike many other Indian hill stations that were purely British inventions, Kodaikanal was established in the mid-19th century through a joint effort by American Christian missionaries and British bureaucrats. They sought a refuge to escape the deadly heat and rampant tropical diseases endemic to the plains.
📌 Energy • Power Projects
Q.28) India has established several Ultra Mega Power Projects (UMPPs) to meet its growing energy demands. The Sasan UMPP, which uses pithead coal to generate roughly 3,960 MW of electricity, is located in which state?
Ans > Madhya Pradesh
- Project Scale and Output: The Sasan Ultra Mega Power Project (UMPP) is one of India’s largest and most critical energy infrastructure assets. Operated by Reliance Power, this massive thermal plant consists of six giant units capable of generating a staggering total of 3,960 megawatts (MW) of baseload electricity.
- The Pithead Advantage: The strategic advantage of Sasan lies in its location in the Singrauli district of Madhya Pradesh. It is a “pithead” plant, meaning it is built directly adjacent to captive coal mines (the Moher and Moher Amlohri extension blocks). This physical proximity completely eliminates the massive costs and logistical nightmares associated with transporting coal via railways.
- Regional Energy Grid: Because it can generate electricity so cheaply and efficiently, the Sasan UMPP is vital for the national grid. It supplies highly affordable power to 14 distribution companies across seven different Indian states, ensuring energy stability for hundreds of millions of citizens and thousands of heavy industries.
📌 Climate • Koeppen Classification
Q.29) According to the Koeppen climate classification system, which specific code is utilized to represent the “Tropical Monsoon” climate, a type heavily prevalent along the Malabar Coast of India?
Ans > Amw
- The Classification Mechanics: Wladimir Koeppen’s renowned climate classification system utilizes a specific set of letters to denote regional temperature and precipitation patterns. The code ‘A’ stands for a hot, tropical climate with no winter, ‘m’ denotes a monsoon-driven precipitation cycle, and ‘w’ indicates that the brief dry season occurs specifically during the winter months.
- Geographical Applicability: When combined into Amw, it perfectly describes the “Tropical Monsoon climate with a short dry winter.” In India, this highly specific, rain-drenched climate zone is found exclusively along the western coastal margin, specifically the Konkan and Malabar coasts stretching south of Goa down through Kerala.
- Rainfall and Vegetation: Regions falling under the Amw classification experience immense, torrential rainfall during the summer South-West monsoon (often exceeding 250 cm annually). This incredible influx of moisture supports dense, evergreen tropical rainforests, robust spice plantations, and the lush coconut groves that the Malabar Coast is famous for.
📌 Infrastructure • River Interlinking
Q.30) To address extreme water scarcity in parched regions, India conceptualized the National River Linking Project. Which of the following was the very first river interlinking project completed in India (in 2015)?
Ans > Godavari-Krishna Link (Pattiseema Lift Irrigation)
- The Project Objective: While the Ken-Betwa link was the first officially proposed megaproject, the Pattiseema Lift Irrigation Project in Andhra Pradesh holds the record as the very first successfully completed river interlinking project in India. Its primary goal was to divert surplus floodwater that was uselessly draining into the sea.
- An Engineering Feat: Executed in a record time of just under a year (completed in 2015-16), the project utilizes massive, heavy-duty pumps situated on the Godavari River. These pumps lift millions of gallons of water and release them into the Polavaram Right Main Canal, physically transferring the water over hundreds of kilometers into the Krishna River basin.
- Agricultural and Economic Rescue: The Krishna basin frequently experiences severe water deficits, threatening millions of farmers. By transferring the Godavari’s excess water, this interlinking project successfully stabilized irrigation and rescued millions of acres of standing crops in the chronically drought-prone Rayalaseema region and the Krishna delta, averting massive agricultural ruin.
📌 Quick Summary — Geography Set 36
- Mangroves: West Bengal holds the absolute largest area of mangrove cover in India.
- Mahanadi River: Originates from the Sihawa mountain range in Chhattisgarh.
- Godavari River: Frequently referred to as the “Vridha Ganga” (Old Ganga).
- Laterite Soils: Formed by intense leaching due to alternating wet and dry tropical spells.
- Kudankulam Plant: High-capacity nuclear facility located in Tamil Nadu.
- Pulicat Lake: Second largest brackish water lagoon, spanning Andhra Pradesh and Tamil Nadu.
- Extreme Heat: Phalodi in Rajasthan holds the record for highest maximum temperatures.
- Durand Line: Official international border with Afghanistan, touching Pakistan-Occupied Kashmir (PoK).
- Valley of Flowers: High-altitude National Park famous for endemic flowers in Uttarakhand.
- Jewel of India: Jawaharlal Nehru described Manipur with this phrase.
- Brahmaputra: Enters the Indian subcontinent directly through Arunachal Pradesh.
- Bailadila Range: World-class open-cast mines extracting high-grade Iron ore.
- Pre-Monsoon Storms: Known as “Bardoli Chheerha” in the state of Assam.
- Bhakra-Nangal Dam: Huge gravity dam built across the fast-flowing Sutlej River.
- Nokrek Biosphere: Rich reserve located in the Garo Hills of Meghalaya.
- Guru Shikhar: The highest peak of the ancient Aravalli Range, at 1,722 m.
- Myanmar Border: Assam does NOT share an international boundary with Myanmar.
- Buckingham Canal: Freshwater navigation canal traversing Andhra Pradesh and Tamil Nadu.
- Siachen Glacier: The longest glacier in the Indian Himalayas, located in the Karakoram Range.
- Pamban Island: Major geographical feature situated in the Gulf of Mannar.
- Jhelum River: Takes its birth from the beautiful Verinag Spring in Kashmir.
- Riverine Port: Syama Prasad Mookerjee Port (Kolkata) located 203 km inland.
- Malwa Plateau: Almost entirely composed of basaltic rocks of the Deccan Traps.
- Sardar Sarovar Dam: Massive water resource project built across the Narmada River in Gujarat.
- Tamil Nadu Winter Rain: Triggered by the North-East Monsoon (Retreating Monsoon).
- Bhur Tracts: Elevated, undulating wind-blown sand deposits in the Upper Ganga plain.
- Kodaikanal: Hill station situated atop the Palani Hills in the Western Ghats.
- Sasan UMPP: Massive pithead coal power project located in Madhya Pradesh.
- Koeppen Amw: Represents the “Tropical Monsoon” climate typical of the Malabar Coast.
- River Interlinking: Godavari-Krishna Link was the first completed megaproject in 2015.
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