115 previous year UPSC Prelims questions on Indian geography make this the largest Geography chapter, from 1996 to 2025, across 28 exam years. UPSC asks about rivers and basins, lakes, forests and trees, mountain peaks and reservoirs, islands and volcanoes. The explanations give the state and basin for each feature.
Explanations state facts as of the year each question was asked; words like “recently” refer to that year.
Showing 91–100 of 115 questions
The Mekong-Ganga Cooperation (MGC) is a regional initiative aimed at enhancing cultural, economic, and tourism ties among member countries. It was launched in 2000 and includes six countries: India, Thailand, Myanmar, Cambodia, Laos, and Vietnam. The project focuses on areas such as tourism, education, culture, and transportation, rather than irrigation, hydroelectric power, or defense.
Assertion (A) is true: Anticyclonic conditions are characterized by high atmospheric pressure and sinking air, which leads to clear skies and low temperatures. These conditions are com-mon in winter, especially in northern India after a cyclonic rain from western disturbances. Reason (R) is true: Winter rainfall in northern India, such as the Western Disturbances, is the result of cyclonic (low-pressure) conditions. However, this rain also creates conditions of anticyclonic activity. R correctly explains A: Cyclonic activities beyond the Indian border bring rain to India in winter. This creates a high Pressure area with light winds radiating outwards. This wind creates anticyclonic activity in northern India. Thus, Reason (R) is the correct explanation of Assertion (A).
Anticyclone Formation: Anticyclones are centers of high pressure. They are surrounded by closed isobars having decreasing pressure outward. The circulation is from central high pressure towards the periphery in such a way that air blows outwards in a clockwise direction in the Northern hemisphere and anticlockwise direction in the southern hemisphere (due to the Coriolis effect). Anticyclones are characterized by stable conditions, warm and dry weather, and gentle winds. Under an anticyclone air is descending, forming an area of higher pressure at the surface. Because of these stable conditions, cloud formation is inhibited, so the weather is usually settled with only small amounts of cloud cover. Summer Anticyclone: In summer the clear settled conditions associated with anticyclones can bring long sunny days and warm temperatures. The weather is normally dry, although occasionally, very hot temperatures can trigger thunderstorms. Winter Anticyclone: In winter the clear, settled conditions and light winds associated with anticyclones can lead to frost and fog.
Statement 1 is correct: As of 2001, India’s total installed power generation capacity was approximately 95,000 MW, according to reports from the Central Electricity Authority (CEA). This included contributions from thermal, hydroelectric, nuclear, and renewable energy sources. As of June 2023-24, the installed capacity has risen to around 146,190 MW.
Statement 2 is incorrect: As of 2001 and even today, nuclear power contributes only around 1-3% (not 15%) of the total electricity generation. The installed nuclear capacity is approximately 7,480 MW, which is a minor fraction of the total energy mix. India’s nuclear expansion has been slow due to regulatory challenges, safety concerns, and the high cost of nuclear plants.
Statement 3 is incorrect: Hydroelectricity accounted for about 25-30% of India’s electricity generation in 2001, not 40%. While hydroelectricity was once a dominant source of power in India, its share has been gradually declining as thermal and renewable energy sources expanded. Currently, hydroelectricity accounts for only about 10-15% of India’s total power generation.
Statement 4 is incorrect: In 2001, thermal power plants (coal, oil, and natural gas) contributed about 65-70% of India’s total power generation, not 80%. Thermal power remains the back-bone of India’s energy sector but has never accounted for such a high percentage. Currently, thermal power contributes around 70-75% of total power generation. While close to 80%, the exact figure fluc-tuates due to the increasing contribution of renewable energy sources like solar and wind.
India’s energy mix is led by thermal power (70-75%), with coal contributing 50-55%. Renewables have grown to 25-30%, with solar (70+ GW) and wind (45+ GW) playing key roles. Hydroelectricity (10-15%) and nuclear power (2-3%, 7,480 MW) add to the mix. The government targets 500 GW of non-fossil capacity by 2030, focusing on renewables, nuclear expansion, and energy storage for a cleaner future.
The Aravalli Range, one of the world’s oldest mountain systems, is estimated to be around 670 million years old based on geological studies and radiometric dating techniques. Some researchers even suggest its origins could date back further, making it as old as 2-4 billion years, but its prominent development and erosion cycles place its approximate age at 670 million years.
The Aravalli Range, formed during the Proterozoic Era through tectonic collisions that created the Aravalli-Delhi Fold Belt, has been eroded over millions of years into its present low-lying form. Stretching approximately 700 km across Rajasthan, Haryana, Delhi, and Gujarat, the range is geologically rich, with metamorphic and igneous rocks containing valuable minerals like lead, zinc, marble, and mica. Ecologically, it serves as a biodiversity hotspot and acts as a natural barrier against the spread of the Thar Desert. Culturally, the Aravallis house ancient forts, temples, and landmarks such as Mount Abu and the Dilwara Temples, making them historically and environmentally significant.
Statement 1 is correct: The Gulf of Mannar Biosphere Reserve, located between India and Sri Lanka, is one of India’s 18 biosphere reserves. Established in 1989, it is the first marine biosphere reserve in South and Southeast Asia. Known for its rich marine biodiversity, especially coral reefs, it supports over 1,10,000 families from 268 fishing villages. It also lies along the Central Asian bird migratory flyway.
Statement 2 is correct: The Ganga Action Plan (GAP) Phase II, launched in 1993, aimed to expand pollution control efforts to the Ganga’s tributaries. In 1995, it was merged with the National River Conservation Plan (NRCP) to include other polluted rivers across India. The NRCP focused on sewage treatment, riverfront development, afforestation, and pollution control in 190 towns across 16 states. Later, in 2014, the Namami Gange Programme was launched to further strengthen Ganga rejuvenation efforts.
Statement 3 is correct: The National Museum of Natural History, opened in 1978, in New Delhi plays a significant role in promoting environmental education and awareness. It offers various programs, exhibitions, and activities to impart non-for-mal education on environment and conservation.
Statement 4 is correct: ENVIS (Environmental Information System) was launched in 1982 by the Ministry of Environment, Forest and Climate Change (MoEFCC) as a decentralized system for collecting and disseminating environmental information across various thematic areas.
The first sunrise of the new millennium (1 January 2000) in India was observed at the 92°30’ E meridian in Arunachal Pradesh, the country’s easternmost region. Located near the Myanmar border, this was the first point in India to receive sun-light as the millennium began. While countries like New Zealand saw it earlier due to their proximity to the International Date Line, within India, 92°30’ E, the nation’s easternmost meridian amongst the given options, marked the dawn of the new era, highlighting its significance as the first place in the country to witness sunrise.
Statement 1 is correct: Tides play a significant role in both navigation and fishing activities. Tides help ships navigate shallow waters by increasing water depth during high tide. They also influence fishing, as certain fish species move with tidal currents, making them easier to catch.
Statement 2 is correct: High tides increase the water level in harbors, which is essential for larger ships to enter or leave safely. Without the rise in water levels brought about by tides, large ships might find it difficult to dock or leave the harbor, as they need sufficient water depth to avoid grounding.
Statement 3 is correct: The ebb and flow of tidal waters help to flush out silt, sand, and other debris from the harbor area. This natural process reduces the risk of siltation, ensuring that ports and harbors remain navigable by preventing the accumulation of sediments that could otherwise block ships.
Statement 4 is correct: Both Kandla Port (in Gujarat) and Diamond Harbour (near Kolkata) are tidal ports, meaning they are influenced by tidal movements. The activities at these ports depend on the high and low tide cycles for ships to dock and undock, as well as to ensure proper water levels for smooth navigation.
Assertion (A) is true: The frequency of floods in the north Indian plains has indeed risen in recent decades. This can be attributed to a combination of factors:
Climate Change: With global warming, the frequency and intensity of rainfall events have increased. In many parts of India, especially in the north, monsoon rains have become more unpredictable, leading to sudden heavy downpours that overwhelm the drainage systems and flood the plains. Urbanization and Poor Drainage Systems: As more urban areas are developed, the natural landscape changes. Cities with poor drainage systems cannot handle heavy rainfall, leading to waterlogging and flooding. Deforestation: Deforestation, particularly in the catchment areas of rivers, reduces the land’s ability to absorb rainfall. The lack of tree cover and vegetation increases surface runoff, which can rapidly flow into rivers and cause them to overflow. River Management Issues: Rivers like the Ganges and Brahmaputra are heavily managed with embankments, dams, and other infrastructure. However, many of these structures have not been properly maintained, or they have been poorly designed, leading to insufficient control of water flow. This poor management has exacerbated the flood situation. Reason (R) is true: Over time, rivers in flood-prone regions like the Ganges, Brahmaputra, and their tributaries have experienced significant sediment deposition, which raises the riverbed and reduces the river’s depth. Several factors contribute to this:
Sediment Transport: Rivers like the Ganges and Brahmaputra carry a large amount of sediment, the continuous accumulation of sand, silt, and clay sediment raises the riverbed, gradually reducing the depth of the river valleys. This process is particularly noticeable in the north Indian plains, where large rivers meander and deposit substantial amounts of sediment. Shallow Riverbeds: As the riverbed rises due to sedimentation, the rivers become shallower and have less capacity to hold and carry water. When heavy rainfall occurs, rivers with reduced capacity cannot contain the additional water, causing them to overflow and flood the surrounding areas. Floodplains and Siltation: Floodplains are areas adjacent to rivers that are prone to flooding during high-water events. These floodplains naturally receive silt deposits from the river during floods, but when silt deposition becomes excessive, the height of the floodplain increases, reducing the storage capacity of the river. The increased frequency of floods (Assertion A) is directly related to the siltation or sediment buildup in the river valleys (Reason R).
The Indian elephant is the largest population of the Asian elephant species, and India is home to about 60-70% of the total population of Asian elephants. The passage refers to the distribution of the population in north-west India (Dehradun, Bijnor), western Ghats (Karnataka, Kerala, Tamil Nadu), central India (Southern Bihar, Orissa), and the eastern parts (Assam, North Bengal), all of which are areas where elephants are found in the wild. Elephants predominantly inhabit moist deciduous forests, dry thorn forests, and grasslands, which align with the habitats described. Distinctive Features:
They have smaller ears compared to their African counterparts. Their trunks are highly sensitive and versatile, used for feeding, drinking, bathing, and social interactions. Adult males typically weigh up to 5,000 kg and stand about 2.5 to 3 meters tall at the shoulder. Males have large tusks, although not all elephants have visible tusks (especially females).
India’s National Forest Policy (1988) recommends that at least 33% of the total geographical area of the country should be under forest cover to maintain proper ecological balance. Forests play a crucial role in maintaining the environment by preventing soil erosion, conserving water, supporting biodiversity, and regulating the climate. Currently, India’s forest cover is around 24% of its total geographical area, according to the Forest Survey of India (FSI) report. While the target of 33% forest cover is still not fully achieved, ongoing afforestation and conservation programs aim to increase the forest cover to meet this goal.
| Q | UPSC year | Correct answer |
|---|---|---|
| 91 | 2001 | (b) a joint tourism initiative of some Asian countries |
| 92 | 2001 | (a) Both A and R are true and R is the correct explanation of A |
| 93 | 2001 | (a) 1 only |
| 94 | 2001 | (d) 670 million year |
| 95 | 2001 | (b) 1, 2, 3 and 4 |
| 96 | 2000 | (d) 92°30’ E |
| 97 | 2000 | (d) 1, 2, 3 and 4 |
| 98 | 2000 | (a) Both A and R are true and R is the correct explanation of A |
| 99 | 1999 | (b) Elephant |
| 100 | 1999 | (b) 33% |
This page covers 115 previous year UPSC Prelims GS Paper-I questions on Indian Geography (Geography), asked from 1996 to 2025. Each has the correct answer and an explanation.
The Pennar river, which has cut a gorge through the Erramala hills in Andhra Pradesh. The canyon is often called the Grand Canyon of India and has the Gandikota fort on its rim.
Barren Island in the Andaman Sea, part of Andaman and Nicobar Islands, is India’s only confirmed active volcano. It has erupted several times in recent decades and is an uninhabited island.
Saline lakes in Rajasthan. They lie in the arid western and central part of the state, with Didwana and Kuchaman in Nagaur district, and yield salt, which is why questions ask them as examples of saline lakes.
