The Indian hot desert mainly lies in which Indian state?
A Rajasthan
B Gujarat
C Haryana
D Punjab
The core area of the Indian Desert is in western Rajasthan, including districts like Jaisalmer, Barmer, Bikaner, and Jodhpur.
The approximate latitudinal extent of the Indian Desert is between:
A 20°N – 25°N
B 24°N – 29°N
C 10°N – 15°N
D 30°N – 35°N
The desert lies roughly between 24°N to 29°N latitude, placing it in the subtropical belt.
The Thar Desert lies in which broad climatic pressure belt?
A Equatorial low-pressure belt
B Subtropical high-pressure belt
C Subpolar low-pressure belt
D Polar high-pressure belt
The text states it lies in the subtropical high-pressure zone, where descending dry air causes aridity and very low rainfall.
Which of the following is the eastern natural boundary that restricts the eastward spread of the Indian Desert?
A Satpura Range
B Vindhya Range
C Aravalli Range
D Western Ghats
The Aravalli Range forms the eastern boundary, acting as a natural wall between the desert and relatively more humid regions.
Which of the following is the eastern natural boundary that restricts the eastward spread of the Indian Desert?
A Satpura Range
B Vindhya Range
C Western Ghats
D Aravalli Range
The Aravalli Range lies on the east of the desert and acts as a natural barrier, preventing further eastward expansion of arid conditions.
The Indian Desert covers an area of about:
A 50,000 sq km
B 2,00,000 sq km
C 10,00,000 sq km
D 20,00,000 sq km
The desert extends over roughly 2 lakh (2,00,000) square kilometres, making it one of the large hot deserts of the world.
The southern extension of the Indian Desert gradually merges into which region?
A Malwa Plateau
B Rann of Kutch
C Chotanagpur Plateau
D Konkan Coast
Southwards, the desert slowly merges into the Rann of Kutch area of Gujarat, which is a salt marsh region influenced by sea water.
The southern extension of the Indian Desert gradually merges into which region?
A Rann of Kutch
B Malwa Plateau
C Chotanagpur Plateau
D Konkan Coast
In the south, the desert blends with the Rann of Kutch in Gujarat, a salty, marshy area influenced by seawater.
Which ancient physical condition contributed to the sandy and saline nature of the Indian Desert?
A Presence of an ancient glacier
B Repeated volcanic eruptions
C Heavy forest cover in the past
D Existence of shallow seas and marine deposits
Much of northwest India was once covered by shallow seas. As the sea retreated, marine sediments and salts were left behind, adding to the sandy and saline nature.
The extremely low rainfall in the Indian Desert is largely due to:
A Low sea surface temperature in the Arabian Sea
B Monsoon winds striking high mountains
C Aravalli Range lying parallel to monsoon winds
D Strong Westerlies throughout the year
The Aravalli Range runs parallel to the southwest monsoon winds, so it does not force them to rise. As a result, very little rain falls over the region.
Which of the following was an important factor in the increasing aridity of the desert region?
A Formation of the Vindhya Range
B Deforestation during medieval period
C Drying up and diversion of ancient rivers like Saraswati
D Expansion of agriculture
The chapter notes that ancient rivers such as Saraswati and Hakra dried up or shifted course due to tectonic and climatic changes, increasing the aridity of the region.
Which of the following was an important factor in the increasing aridity of the desert region?
A Expansion of agriculture
B Deforestation during medieval period
C Drying up and diversion of ancient rivers like Saraswati
D Construction of dams
The text explains that rivers like Saraswati and Hakra dried up or changed course. This loss of flowing rivers reduced moisture and contributed to long-term desertification.
Which of the following best describes the role of tectonic movements in forming the Indian Desert?
A They increased volcanic activity, covering the area with lava.
B They uplifted the Himalayas and changed drainage patterns, drying rivers.
C They caused subsidence, leading to lake formation.
D They created a large rift valley filled with water.
Tectonic movements associated with Himalayan uplift changed river courses and drainage, causing some rivers to shift away or dry up, promoting arid conditions.
Which factor most directly enhances dryness in the Thar Desert today?
A High cloud cover
B Thick forest cover
C High temperature and rapid evaporation
D Heavy snowfall
The region experiences very high temperatures, clear skies and low humidity, which greatly increase evaporation, further drying the soil and air.
Powerful desert winds reshaping the land over time mainly contribute to:
A Plate convergence
B Earthquake formation
C Sand erosion and dune building
D Glacier formation
In the desert, strong winds continuously erode and deposit sand, leading to the formation and movement of sand dunes and other aeolian landforms.
Powerful desert winds reshaping the land over time mainly contribute to:
A Plate convergence
B Earthquake formation
C Glacier formation
D Sand erosion and dune building
Strong winds lift, transport and deposit sand, causing wind erosion and the creation of dunes, which constantly modify the desert landscape.
Which of the following is not a key reason for the formation of the Indian Desert?
A Low and unreliable rainfall
B Parallel alignment of the Aravallis to monsoon winds
C Drying up of ancient rivers
D Heavy year-round forest regeneration
The desert formed due to low rainfall, Aravalli–monsoon alignment, drying rivers, and other factors. Heavy forest regeneration is not a cause of desert formation.
Which of the following is not a key reason for the formation of the Indian Desert?
A Heavy year-round forest regeneration
B Low and unreliable rainfall
C Parallel alignment of the Aravallis to monsoon winds
D Drying up of ancient rivers
The desert exists because of low rainfall, Aravallis running parallel to monsoon winds, and drying rivers. Continuous forest regeneration would actually reduce aridity, so it is not a cause.
Which feature of the desert climate explains why nights in winter can become very cold, even after hot days?
A High humidity
B Thick cloud cover
C Diurnal temperature variation due to clear, dry air
D Influence of sea breezes
With clear skies and dry air, heat escapes rapidly at night, creating large differences between day and night temperatures (high diurnal range).
The average annual rainfall in most parts of the Indian Desert is around:
A 25–50 mm
B 50–80 mm
C 100–150 mm
D 250–300 mm
The region typically receives about 100–150 mm of highly irregular rainfall per year, a defining feature of its arid climate.
The hot, dry local winds that blow over the desert region in summer afternoons are known as:
A Khamsin
B Chinook
C Bora
D Loo
In north and northwest India, including desert areas, hot dry winds in summer are locally called ‘loo’, causing severe heat and dryness.
The hot, dry local winds that blow over the desert region in summer afternoons are known as:
A Khamsin
B Chinook
C Loo
D Bora
In the desert belt of north-western India, intensely hot and dry summer winds are called ‘loo’, increasing heat stress and desiccation.
Which of the following is most closely linked with frequent summer dust storms in the Thar Desert?
A Heavy vegetation
B Low temperature
C High soil moisture
D Loose, dry sand and strong winds
The presence of loose, dry sand, bare surfaces and strong winds in hot conditions leads to frequent dust and sand storms in summer.
Which factor is most closely linked with frequent summer dust storms in the Thar Desert?
A Loose, dry sand and strong winds
B High soil moisture
C Heavy vegetation cover
D Continuous rainfall
With little vegetation and dry, sandy soil, strong winds easily lift dust and sand, producing dust storms typical of desert summers.
Which of the following best describes the dominant soil type in the Indian Desert?
A Clayey, water-logged soil
B Peaty, highly organic soil
C Loose, sandy arid soil with low water retention
D Black cotton soil with high moisture
Desert soil is mainly loose, sandy and arid, poor in humus and with very low water-holding capacity, which supports only sparse vegetation.
In many parts of the Indian Desert, salts accumulate in the soil mainly because:
A Heavy rainfall leaches away salts
B Strong river currents wash away minerals
C High evaporation leaves soluble salts behind
D Glacial meltwater adds salts
Due to high evaporation, groundwater and soil moisture evaporate, leaving soluble salts behind. This makes many desert soils saline and alkaline.
Small nodules of calcium carbonate (kankar) in desert soils are important because they:
A Indicate presence of peat
B Make soil permanently infertile
C Always prevent plant growth
D Sometimes mark zones where groundwater may occur
Kankar beds often form in lower horizons of arid soils and can indicate zones where groundwater accumulates, useful for locating wells.
The general fertility of desert soils improves significantly when:
A Rainfall is completely removed
B Forests are burnt regularly
C Irrigation water is supplied and salinity controlled
D All sand dunes are bulldozed
Although low in organic matter, these soils are mineral rich; with proper irrigation (e.g., Indira Gandhi Canal) and salinity management, they can become highly productive.
Plants that survive on very little water and are specially adapted to dry conditions are called:
A Hydrophytes
B Mesophytes
C Halophytes
D Xerophytes
Desert plants like khejri, cactus, babool are xerophytes, meaning they are adapted to life in extremely dry environments.
Which of the following adaptations is least likely to be found in desert vegetation?
A Thick stems storing water
B Tiny or spiny leaves
C Long roots reaching deep moisture
D Large, broad, thin leaves with many stomata
Desert plants reduce leaf size (often spines) to minimise water loss. Large, thin leaves with many stomata would cause excessive transpiration, so it is unlikely.
Which of the following adaptations is least likely to be found in desert vegetation?
A Thick stems storing water
B Large, broad, thin leaves with many stomata
C Tiny or spiny leaves
D Deep-reaching root systems
Desert plants try to reduce water loss, so they avoid large, broad leaves with many stomata. Instead, they have small/spiny leaves and deep roots.
Which tree is especially important in the desert region and is also recognised as the state tree of Rajasthan?
A Neem
B Teak
C Khejri
D Sal
Khejri (Prosopis cineraria) is a key drought-resistant tree of the desert, providing fuel, fodder and shade, and is the state tree of Rajasthan.
Which grasses are crucial for supporting the pastoral economy of the Thar Desert?
A Sugarcane and jawar
B Sewan and dhaman grasses
C Rice and wheat
D Tall elephant grass
After the monsoon, grasses like sewan and dhaman grow in patches and are vital fodder for camels, sheep, and goats in the desert.
Canal irrigation (e.g., Indira Gandhi Canal) has led to which of the following changes in parts of the desert?
A Complete disappearance of vegetation
B Transformation of some areas into green fields and orchards
C Conversion of all dunes into rocky hills
D Permanent flooding of the region
With canal irrigation, some desert areas now have wheat, cotton, mustard and orchards, more stable vegetation and reduced sand movement.
The Luni River originates near which region in Rajasthan?
A Jaisalmer sand dunes
B Mount Abu
C Pushkar valley near the Aravallis
D Rann of Kutch
The Luni begins near the Pushkar valley, collecting runoff from the western slopes of the Aravallis before flowing southwest.
The Luni River originates near which region in Rajasthan?
A Mount Abu
B Pushkar valley near the Aravallis
C Jaisalmer sand dunes
D Rann of Kutch
The Luni rises near Pushkar valley close to the Aravalli Range, initially as small streams that later unite to form the main river.
In its upper reaches, the Luni River is locally known by another name. Which one?
A Saraswati
B Sabarmati
C Chambal
D Sagarmati / Lavanavari
In its early course, the Luni is referred to as Sagarmati or Lavanavari before it becomes the better-known Luni downstream.
The Luni River finally:
A Joins the Ganga in the plains
B Falls into the Arabian Sea near Mumbai
C Joins the Narmada River
D Loses itself in marshy lands near the Rann of Kutch
The Luni does not reach the sea. It gradually disappears into marshy, saline lands near the Rann of Kutch, forming inland basins.
Why does the Luni River water become increasingly saline in its lower course?
A It mixes with sea water directly at its source.
B Heavy rainfall dilutes salts along its path.
C It receives many glacial streams carrying rock salt.
D It flows through arid, salty soils and high evaporation concentrates salts.
As Luni flows through desert soils rich in salts, intense evaporation and minimal fresh inflow raise the salinity of its water downstream.
Which of the following best describes the overall character of the Luni River?
A Perennial, glacier-fed, flowing throughout the year
B Large delta-forming river at its mouth
C Seasonal river with monsoon-dependent flow
D Tidal river controlled by ocean currents
The Luni carries significant water only during the monsoon, remaining dry or with minimal flow for much of the year—typical of a seasonal river in arid areas.
Which of the following best describes the overall character of the Luni River?
A Perennial, glacier-fed, flowing throughout the year
B Large delta-forming river at its mouth
C Seasonal river with monsoon-dependent flow
D Tidal river controlled by ocean currents
The Luni is a seasonal river, flowing mainly during the monsoon months, with very low or no flow during the dry season.
The region drained by the Luni is important because it:
A Has dense evergreen forests and high rainfall
B Is a major source of Himalayan glaciers
C Provides limited but vital irrigation and supports settlements in the desert
D Forms India’s largest perennial river basin
Though small, the Luni Basin provides precious water for irrigation and settlements in an otherwise extremely arid belt.
The region drained by the Luni is important because it:
A Provides limited but vital irrigation and supports settlements in the desert
B Has dense evergreen forests and high rainfall
C Is a major source of Himalayan glaciers
D Forms India’s largest perennial river basin
The Luni Basin is a lifeline for western Rajasthan, enabling small-scale agriculture and habitation where water is otherwise very scarce.
Which of the following is not true about sand dunes in the Thar Desert?
A They are formed by wind erosion and deposition.
B Their shapes and positions can change over time.
C They are completely immobile and fixed by glaciers.
D They may be crescent-shaped, longitudinal, or transverse.
Sand dunes are highly mobile features shaped by wind. They are not fixed by glaciers, which do not exist in this hot desert.
Which of the following is not true about sand dunes in the Thar Desert?
A They are formed by wind erosion and deposition.
B They are completely immobile and fixed by glaciers.
C Their shapes and positions can change over time.
D They may be crescent-shaped, longitudinal, or transverse.
Dunes are wind-formed and often mobile; they are not fixed by glaciers (there are no glaciers here), so statement B is incorrect.
Crescent-shaped dunes with horns pointing downwind, common near Jaisalmer and Bikaner, are called:
A Parabolic dunes
B Transverse dunes
C Longitudinal dunes
D Barchan dunes
Barchan dunes are crescent-shaped with their tips (horns) pointing in the direction of the prevailing wind, typical in the Thar Desert.
Long, narrow sand ridges that run roughly parallel to the prevailing wind direction are known as:
A Parabolic dunes
B Barchan dunes
C Longitudinal (Seif) dunes
D Dome dunes
Longitudinal or Seif dunes are long, parallel ridges of sand aligned with prevailing wind direction, found in the western parts of the desert.
Which type of dune forms ridges lying at right angles (perpendicular) to the prevailing wind direction?
A Longitudinal dunes
B Transverse dunes
C Parabolic dunes
D Fixed dunes
Transverse dunes are essentially sand ridges across the wind, forming when sand supply is abundant and winds blow predominantly from one direction.
Stabilised dunes that do not move easily because of vegetation or moisture are called:
A Fixed dunes
B Barchan dunes
C Parabolic dunes
D Transverse dunes
When sand is anchored by plant roots or moisture, dunes become fixed or stabilised, helping to protect settlements from shifting sands.
Sand dunes are significant for nearby settlements mainly because they:
A Always provide fertile soil for rice cultivation
B Guarantee abundant groundwater everywhere
C Control wind flow and can protect villages from direct sand-blasting
D Permanently store large lakes of fresh water
Dunes can act as natural barriers, modifying wind speed and direction, sometimes helping to shield villages, fields, and roads from blowing sand.
The Great Indian Desert occupies the core of which larger physiographic region?
A Central Highlands
B Northern Plains
C Thar region of north-western India
D Eastern Coastal Plain
The Great Indian Desert forms the core arid zone of the broader Thar region, extending over western Rajasthan and adjoining areas.
Which of the following combinations of districts lies largely within the Great Indian Desert?
A Jaisalmer, Barmer, Bikaner, Jodhpur
B Jaipur, Ajmer, Udaipur, Kota
C Gwalior, Bhopal, Indore, Ujjain
D Ranchi, Dhanbad, Bokaro, Jamshedpur
Districts like Jaisalmer, Barmer, Bikaner and Jodhpur are key parts of the hot desert core in western Rajasthan.
Which of the following is a characteristic of the climate of the Great Indian Desert?
A Heavy rainfall throughout the year
B Very low, irregular rainfall and extremes of temperature
C Cool summers and mild winters
D High humidity and frequent cyclones
The desert has scanty, unreliable rainfall (about 100–150 mm) and very high summer temperatures with cold winter nights—typical arid climate.
Which wildlife species is closely associated with the desert ecosystem of western Rajasthan?
A One-horned rhinoceros
B Nilgiri tahr
C Chinkara (Indian gazelle)
D Lion-tailed macaque
The chinkara, or Indian gazelle, is a typical desert animal adapted to arid environments of the Thar.
Which of the following correctly contrasts the Great Indian Desert with the Rann of Kutch in terms of surface type?
A Both are entirely rocky plateaus.
B The desert is entirely forested; the Rann is sandy.
C The desert is a permanent lake; the Rann is a glacier.
D The desert is mainly sandy; the Rann is largely a salt marsh.
The Great Indian Desert has sand dunes and sandy plains, whereas the Rann of Kutch is a salty, marshy flat that alternates between shallow water and salt crust.
During the monsoon, what typically happens to large parts of the Rann of Kutch?
A They are covered with dense forests.
B They are buried under snow.
C They remain as dry salt crusts.
D They turn into shallow seasonal water bodies.
In the rainy season, seawater and river inflow spread over the Rann, turning it into a shallow flooded marsh, which later dries to leave salt.
The Rann of Kutch is especially well known for which of the following economic activities?
A Tea cultivation
B Iron ore mining
C Salt production and related activities
D Rubber plantation
The salty flats of the Rann are ideal for salt production, which is a major economic activity there, along with tourism and handicrafts.
The Little Rann of Kutch is particularly famous for being the habitat of:
A Snow leopard
B Indian wild ass (ghudkhar)
C Great Indian bustard
D One-horned rhinoceros
The Little Rann of Kutch is known for the Indian wild ass, protected in the Wild Ass Sanctuary, a unique salt-marsh ecosystem.
In both the Great Indian Desert and the Rann of Kutch, many human settlements are located on slightly higher grounds called:
A Plateaus
B Deltas
C Inselbergs
D Bets (raised mounds)
In the Rann and adjoining arid areas, villages often stand on bets—raised mounds of land that remain above water during seasonal flooding.
Which of the following is a key cultural and economic feature of communities living in the Kutch region?
A Colourful handicrafts, embroidery and pastoralism
B Large-scale rice paddy cultivation
C Heavy dependence on glacier tourism
D Exclusive dependence on fishing in deep seas
Kutch communities are renowned for their handicrafts and embroidery, along with animal rearing, which suit the arid and saline environment.
Which of the following is a key cultural and economic feature of communities living in the Kutch region?
A Colourful handicrafts, embroidery and pastoralism
B Large-scale rice paddy cultivation
C Heavy dependence on glacier tourism
D Exclusive deep-sea fishing
Kutch communities are renowned for their handicrafts and embroidery, along with animal rearing, which suit the arid and saline environment.
Which statement about the environmental importance of the desert and Rann regions is most accurate?
A They are biologically dead zones with no wildlife.
B They are covered by dense equatorial forests.
C They support unique and fragile ecosystems with rare species.
D They are mainly important for coal mining.
The Thar and Rann are ecologically sensitive regions supporting specialised plants and animals, including endangered and migratory species.
Why are the Great Indian Desert and Rann of Kutch also significant from a strategic and national security point of view?
A They contain India’s largest naval ports.
B They form part of the international border zone with Pakistan.
C They are the headquarters of major IT companies.
D They are close to the Himalayan passes.
These regions lie along the Indo-Pakistan border, making them strategically important for defence, border security and surveillance.