Geography 2006 (Civil Services)

Sulphur dioxide causes acid rain.

Red soils are derived from crystalline rocks like granite and gneiss. Laterite soils are indeed rich in hydrated oxides of iron and aluminium. Both soil types are typically deficient in nitrogen, phosphorus, and humus, making statement 3 incorrect.

Hanging valleys, corries, pyramidal peaks, and drumlins are all landforms created by glacial erosion or deposition. V-shaped valleys are characteristic of river erosion in non-glaciated mountainous regions.

In an overturned fold, the axial plane is inclined, but the limbs dip in the same direction. In a recumbent fold, the axial plane is essentially horizontal, meaning the fold has been pushed over until it lies on its side.

The Coriolis force is zero at the equator and increases toward the poles. Tropical cyclones require the Coriolis force to initiate the rotation of the air mass; without it, the low-pressure system cannot develop into a cyclone.

Net primary productivity (NPP) is highest in ecosystems with abundant water and warm temperatures throughout the year, which allows for year-round photosynthesis. Temperate forests, especially those with high rainfall, generally exhibit higher annual NPP than grasslands or savannahs.

A cuspate delta is formed when a river deposits sediment onto a straight coastline with strong waves. The Tiber River in Italy is a classic example of a cuspate delta.

Mauna Loa and Mauna Kea are shield volcanoes, but their summit elevations are approximately 4,169 m and 4,207 m above sea level, respectively. The statement claiming they are more than 6,500 m above sea level is incorrect.

William Whewell proposed the progressive wave theory in the 19th century to explain the movement of tidal waves across the oceans, contrasting with the equilibrium theory.

S waves (secondary or shear waves) are transverse waves that can only propagate through solid materials. They cannot travel through liquid, which is why they are blocked by the Earth's liquid outer core.

Youthful topography is characterized by steep gradients and V-shaped valleys, not low gradients. Mature topography is characterized by streams that have reached grade and are cutting laterally.

Spits are depositional landforms formed by longshore drift, which transports sediment along the coast and deposits it where the coastline changes direction, such as at a bay or river mouth.

Natural Levees are fluvial (river) features (A-3). Eskars are glacial/glaciofluvial features (B-4). Polje is a karst landform (C-2). Barchan is an aeolian (wind-blown) sand dune (D-1).

All three statements are correct: westerlies are modified by pressure systems, they dominate the middle latitudes, and they are stronger in the Southern Hemisphere due to the lack of large landmasses to create friction.

Chernozem (black earth) soils are indeed associated with temperate grasslands (prairies). Laterite soils form in hot, humid tropical regions where intense leaching occurs.

Geosynclines are large-scale, linear depressions in the Earth's crust that accumulate thick layers of sediment over long periods, eventually becoming mountain ranges.

Pelagic deposits are deep-sea sediments that accumulate on the ocean floor, far from land. They are primarily composed of organic oozes (remains of microscopic marine organisms) and red clays.

Chaparral biomes are characterized by hot, dry summers and mild, wet winters, not high moisture with low temperature variation. Statement 2 is correct regarding the distribution of moist temperate coniferous forests.

The North Atlantic has more landmasses and complex currents, leading to more pronounced temperature gradients. In enclosed seas at high latitudes, surface cooling can lead to denser water sinking, causing temperature inversion.

The Montreal Protocol (1987) aimed to phase out ozone-depleting substances, including CFCs. India became a signatory to the Montreal Protocol in 1992, not 1987.

The boundary of a National Park is circumscribed by legislation whereas that of a Biosphere Reserve is not circumscribed by legislation. Both national parks and wild life sanctuaries conserve gene pools.

In Koppen's classification, 'f' stands for 'feucht' (moist), meaning rain throughout the year. 's' stands for 'sommertrocken' (summer dry), meaning a dry summer season.

The Florida Current is a continuation of the Loop Current, which passes through the Yucatan Channel. It carries warm, saline water from the Caribbean, characteristic of the equatorial water mass.

The Masai people of East Africa traditionally live in enclosures called kraals, which are circular arrangements of huts surrounded by a fence for protection.

Masai are well-known nomadic pastoralists in East Africa, and Kirghiz are traditional nomadic herders in Central Asia. The Boro are an indigenous group in the Amazon rainforest, primarily known for agriculture and hunting, not nomadic herding.

The Bantus are a major ethnic group in sub-Saharan Africa, belonging to the Niger-Congo linguistic family, and are distinct from the Mongoloid racial group.

Griffith Taylor's Zone and Strata theory posits that the most primitive races were pushed to the peripheries by later, more advanced races. The theory does not claim Caucasoids are the latest human races; rather, it suggests the most recent races are found near the center of origin.

Khasi society is matrilineal, not patrilineal. Tharus are primarily settled agriculturalists, not pastoralists.

Bhotia and Gaddi are well-known pastoralist tribes in the Himalayan region. Abujhmaria are primarily forest-dwelling agriculturalists in central India.

Caribou (reindeer) are essential to Arctic populations, providing meat, milk, and hides/fur. The option 'non-shrinkable wool' is likely a distractor or refers to specific breeds of sheep, not caribou.

The Dogger Bank is a large sandbank in the North Sea, famous for being one of the most productive fishing grounds in the world.

The Austric linguistic family in India is primarily represented by the Munda and Mon-Khmer languages, which are concentrated in the plateau regions of Bihar, Orissa, and West Bengal.

A Syntaxial Bend is a structural feature where a mountain range changes direction sharply. The Himalayas exhibit this at the western (Nanga Parbat) and eastern (Namcha Barwa) ends.

The Dayak people are the indigenous ethnic groups of Borneo, living primarily in the interior of the island.

Friedrich Ratzel's first volume of Anthropogeographie focused on the influence of the physical environment on humans, while his second volume shifted focus toward the influence of human activity on the natural environment.

The Dead Sea is located in the Jordan Rift Valley, which is part of the larger Great Rift Valley system.

Temperature inversions occur most readily under conditions of clear skies (allowing rapid terrestrial radiation), calm winds (preventing mixing), and long winter nights (maximizing cooling).

Ernest Burgess proposed the Concentric Zone Model (or Concentric Circle Theory) in 1925 to describe urban land use patterns.

The Demographic Transition Model's 'Late Expanding' phase (Stage 3) is characterized by a declining birth rate and a death rate that continues to decline but at a slower pace.

Immigrants often face cultural differences, visibility as minorities, fill specific labor functions, and frequently encounter legal hurdles or staged integration processes.

While Kerala is the traditional leader in rubber production, Tripura has significantly increased its production and is often cited as a major producer in specific contexts, though Kerala remains the national leader. Given the options, Tripura is the intended answer.

Hmar are in Mizoram, Dimasa are in Assam, Konyak are in Nagaland, and Nishi are in Arunachal Pradesh.

Minnesota is in the West North Central division, North Carolina is in the South Atlantic, Kentucky is in the East South Central, and Texas is in the West South Central.

San Francisco, Adelaide, Cape Town, and Sydney all experience a Mediterranean climate, characterized by warm, dry summers and mild, wet winters. These locations are situated in the mid-latitude zones on the western or southern coasts of their respective continents.

Selvas refer to the tropical rainforests of the Amazon basin. These forests are characterized by broad evergreen leaves and a high density of epiphytes, which grow on other plants to reach sunlight in the dense canopy.

Detroit is located on the Detroit River, which connects Lake St. Clair and Lake Erie, not Lake Superior. Lake Superior is the northernmost and largest of the Great Lakes, far from Detroit.

Polynesia is a subregion of Oceania comprising a large grouping of over 1,000 islands scattered over the central and southern Pacific Ocean. Timor is part of Maritime Southeast Asia, not the Pacific island region of Polynesia.

Silicon Valley is a region in the southern part of the San Francisco Bay Area in Northern California. It serves as a global center for high technology and innovation.

Among the listed countries, Germany has a higher ratio of arable land per capita compared to the others, which are either more mountainous or have different land-use patterns that limit agricultural expansion.

St. Petersburg sits at the head of the Gulf of Finland (Baltic Sea). Stockholm is located on the Baltic Sea coast. Oslo (misspelled as 'Osio' in the question) is on the Oslofjord, which connects to the Skagerrak and North Sea, not the Norwegian Sea directly. The Norwegian Sea is much further north off Norway's coast.

Australia has one of the highest rates of urbanization in the world, with the vast majority of its population concentrated in coastal urban centers.

Caucasus is known for mineral oil, Sakhalin for mineral oil, Magnitogorsk for iron ore, and Karaganda for coal. Matching these correctly leads to option D.

Azores belong to Portugal, Bermuda to the UK, Canary Islands to Spain, and Reunion to France. This matches the sequence A-3, B-1, C-4, D-2.

Bangkok is located on the Chao Phraya River, not the Mekong River. The Mekong River flows through several other Southeast Asian countries but does not pass through Bangkok.

Singapore is a major global trade hub and port, and its per capita export volume is significantly higher than that of the other listed Asian countries due to its role as an entrepot.

China spans five geographical time zones but officially uses a single time zone (Beijing Time) for the entire country. Russia currently uses 11 standard time zones, not eight.

The Yangtze Delta is the primary region for sericulture (silk production) in China due to its favorable climate and long history of mulberry cultivation.

China's coal reserves are primarily in the north and northwest, not the south. In the USA, the largest share of coal is mined in the eastern and interior regions, not the western half.

The Ring of Fire is a major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur. All listed locations (Andes, New Zealand, Philippines, Taiwan) are situated along this belt.

 Correct option is (4).

An escarpment is a steep slope or long cliff that occurs from erosion or faulting and separates two areas of differing elevations. It typically forms when a block moves vertically along a fault plane.

South Asia is primarily defined as a geographic region based on its location on the Indian subcontinent, bounded by the Himalayas to the north and the Indian Ocean to the south.

Based on historical forest survey data often used in these exams, Andhra Pradesh (including Telangana at the time) was frequently cited as having a large forested area, though this can vary by specific survey year.

Gersoppa (Jog) Falls is a plunge waterfall caused by the river Sharavathi, not a caprock fall. Caprock falls are typically formed where a hard rock layer overlies a softer one, like Niagara.

The Deccan Trap formations were the result of volcanic eruptions during the late Cretaceous to early Paleocene period, not the Oligocene.

The Kundah Hydroelectric Project is located in Tamil Nadu, not Karnataka. The other pairs are correctly matched.

Statement 2 is correct as red soils cover a significant portion of Tamil Nadu. Statements 1 and 3 are incorrect regarding the origin and transport of those specific red soils.

The National River Conservation Directorate (NRCD) operates under the Ministry of Environment, Forest and Climate Change. It is responsible for implementing the National River Conservation Plan to improve water quality in rivers.

As one moves from the Western Ghats (Mangalore) towards the east, the rainfall decreases significantly. The sequence reflects the transition from high-rainfall evergreen forests to drier deciduous and eventually dry scrub forests as the rain shadow effect takes hold.

Parvati is a tributary of the Beas, and Pindar is a tributary of the Alaknanda. Chandra is a headstream of the Chenab, not the Sutlej, and the Tons is a major tributary of the Yamuna, not the Bhagirathi.

The geographical distribution of these coal fields from west to east is Singrauli (Madhya Pradesh), Karanpura (Jharkhand), Bokaro (Jharkhand), and Raniganj (West Bengal).

Tertiary coal is indeed found in the Northeast. Metallurgical coal is primarily found in the Gondwana fields of Jharkhand, Odisha, and West Bengal, not restricted to Andhra Pradesh. Lignite is also found in states like Gujarat and Jammu and Kashmir, making statement 2 incorrect.

Temperate cyclones (mid-latitude cyclones) are characterized by the interaction of warm and cold air masses, which creates distinct fronts (cold and warm fronts).

According to Koppen's classification, As (Monsoon with dry summer) is in the extreme south (Tamil Nadu coast), Aw (Tropical Savanna) is in the peninsula, Cwg (Monsoon with dry winter) is in the Gangetic plains, and E (Polar/Alpine) is in the northern Himalayas.

Rain Forest Research Institute is in Jorhat (A-4), Tropical Forestry Research Institute is in Jabalpur (B-3), Institute of Forest Genetics and Tree Breeding is in Coimbatore (C-1), and Institute for Forest Productivity is in Ranchi (D-5).

The Indian monsoon is a complex phenomenon influenced by the country's location, the thermal contrast between land and sea, upper air circulation (jet streams), and the shifting of the ITCZ.

Semang are found in equatorial forests (Malay Peninsula), Maasai in savannah grasslands (East Africa), Bushmen in hot deserts (Kalahari), and Kirghiz in temperate grasslands (Central Asia).

When multiple roads or transport routes converge at a single point, the settlement tends to grow outwards along these routes, forming a star-shaped pattern.

Tamil Nadu was one of the first major states in India to achieve the replacement level of fertility (Total Fertility Rate of 2.1), following the trend set by Kerala.

Silk is associated with Sirpur (Kagaznagar/Sirpur Paper Mills area is also known for paper, but Sirpur is a silk center), Rail wagons are produced in Titagarh, Paper is produced in Chennai (historical context), and Leather is associated with Kolar (though Chennai is more famous for leather, the specific mapping provided in the options leads to D).

The correct sequence is A - 2, B - 4, C - 3, D - 1.

QuickBird is a high-resolution commercial satellite that orbits at an altitude of approximately 450 km, not 950 km. It does collect both multispectral and panchromatic data.

Coal is found in Victoria (e.g., Latrobe Valley), Oil and gas in New South Wales (offshore/basins), Non-fuel minerals in Northern Territory, and Uranium in Western Australia.

On aerial photographs, the '+' symbols are fiducial marks used to locate the principal point of the photograph.

Contours are perpendicular to the direction of water flow. They bend upstream when crossing a river (V-shape pointing upstream). They are spaced closer together for steeper slopes, not farther. They generally do not show minor relief features unless the contour interval is very small.

Harbin is in the far north, Beijing is further south, Shanghai is central-east, and Guangzhou is in the south.

The ratio of population to cultivable waste land is not a standard measure used by the Planning Commission or government bodies to identify backward areas in India.

The Meghalaya Plateau is a detached block of the Peninsular (Deccan) Plateau, and the Valley of Kashmir is a synclinorium formed by the folding of the Himalayas.

Eratosthenes is famous for his accurate calculation of the Earth's circumference and the length of the equator using geometric principles and the angle of the sun.

Columbus relied on Ptolemy's underestimated Earth size to argue that Asia was close to Europe. Strabo correctly attributed the Nile floods to heavy rains in Ethiopia.

Bernhardus Varenius, in his work 'Geographia Generalis', was the first to systematically distinguish between general (systematic) and special (regional) geography.

Immanuel Kant rejected teleological explanations in geography, favoring causal and chronological explanations, and he was influenced by the scientific thought of his time.

Alexander von Humboldt is widely recognized for his work on plant geography and the vertical distribution of vegetation in tropical mountains. Carl Ritter is known for his comparative geography, but the specific description of continental versus maritime climate influences is more generally attributed to his broader geographic synthesis and comparative methods.

Ritter viewed geography as a teleological study reflecting a divine plan. His monumental work 'Die Erdkunde' was indeed focused on Africa and Asia. However, unlike Humboldt, who traveled extensively to gather data, Ritter was largely a library scholar who synthesized existing reports rather than relying primarily on his own field observations.

Behavioural geography focuses on the subjective experience of space, including how individuals perceive, imagine, and mentally map their environment. While spatial behavior is a component, the core of the behavioural approach lies in the cognitive processes (perception, experience, and mental maps).

Humanistic geography emerged in the 1970s as a reaction against the positivist, quantitative, and model-building approaches of the 'spatial science' era. It emphasized human experience, agency, and social relevance. It was distinct from, rather than a derivative of, the radical/Marxist trend in geography.

Radical geography emerged as a critique of the 'spatial science' approach, arguing that it ignored social and political structures. It sought to address social inequality and restructure capitalist society. It was generally critical of the positivist/empiricist methods used by mainstream geographers at the time.

In the Survey of India topographic map numbering system, the 1:1,000,000 scale is represented by a number (e.g., 47). The 1:250,000 scale adds a letter (47A). The 1:50,000 scale adds a number (47A/16). The 1:25,000 scale adds a quadrant designation (NW, NE, SW, SE). Therefore, 47A/16/NW corresponds to 1:25,000.

Bonne's projection is a pseudo-conical equal-area projection. The Sinusoidal projection is a special case of Bonne's projection where the central meridian is a straight line and the standard parallel is the equator.

The Polyconic projection is well-suited for mapping small areas because it maintains scale along the central meridian and each parallel, minimizing distortion for large-scale maps of limited extent.

Mercator's projection is essential for navigation because it represents rhumb lines (lines of constant compass bearing) as straight lines, allowing sailors to maintain a constant heading.

The scale of an air photograph is calculated as the ratio of focal length (f) to flying height (H). Here, f = 20 cm = 0.2 m and H = 1000 m. Scale = 0.2 / 1000 = 1 / 5000.

GRASS GIS (Geographic Resources Analysis Support System) was originally developed by the U.S. Army Construction Engineering Research Laboratory (USA-CERL), not the DST (Department of Science and Technology).

A stereopair requires an overlap (usually 60%) to create a 3D effect. No overlap (1) prevents stereoscopic viewing, and 100% overlap (4) is impossible for a pair as it would be the same image.

In GIS, spatial objects are geometric representations like points, lines, and polygons. An attribute data cell is a piece of non-spatial information associated with a location, not a spatial object itself.

Himalayan rivers are indeed antecedent (older than the mountains), and they do cut deep gorges. However, the reason they are older is due to the tectonic uplift of the Himalayas occurring after the river courses were established, not simply because they cut deeply.

Cyclones in the Northern Hemisphere (including the Bay of Bengal) rotate counter-clockwise due to the Coriolis effect. The assertion is false.

Cirrus clouds form at high altitudes where temperatures are very low, causing water vapor to freeze into ice crystals. This explains why they are composed of ice particles.