Rajasthan Geography Questions

The correct answer is Western part.

Key Points

• The western part of Rajasthan has antisol group of soils.

Additional Information 

• Antisol 
  • Antisols lack well-developed horizons and have minimum profile development.
  • Districts: Entisols are the dominant soil of the state.
  • All districts in the western half are covered in some or major part by these soils.
  • In Rajasthan, important suborders are Psamments, Orthents and Fluvent.

The correct answer is Banas.

Key Points

• The river which has the largest catchment area in Rajasthan is Banas.

Additional Information 

• The Banas River
  • The Banas is a river that lies entirely within the state of Rajasthan in western India.
  • It is a tributary of the Chambal River, itself a tributary of the Yamuna, which in turn merges into the Ganga.
  • The Banas is approximately 512 kilometres in length. 
  • Source: Aravalli Range
  • Mouth: Chambal
  • Cities: Kumbhalgarh in Rajsamand district, Mewar, Chambal near the village of Rameshwar in Sawai Madhopur

The correct answer is North Western region.

Key Points

• In the summer season-low, air pressure area of Rajasthan is found in the North-Western region.

Additional Information 

• The low-pressure area, low area or low is a region where the atmospheric pressure is lower than that of surrounding locations.
• Low-pressure systems form under areas of wind divergence that occur in the upper levels of the atmosphere.
• The formation process of a low-pressure area is known as cyclogenesis.

The correct answer is C & D.

Key Points

Agro-Climate Zone

Additional Information 

Source:- http://www.agriculture.rajasthan.gov.in/content/agriculture/en/Agriculture-Department-dep/Departmental-Introduction/Agro-Climatic-Zones.html

The correct answer is Arid.

• Sewan and Lawan grasses grow in Arid climatic region of Rajasthan.

Additional Information 

• The dominant perennial grass is the indigenous sewan (Lasiurus sindicus), popularly known as the "king of desert grasses". 
• Sewan and Lawan are a remarkable natural resource for the people of the desert.
• High water-use efficiency enables this native grass cover to maximise its production even with little water available through scanty rainfall.
• It also has high energy-use efficiency, which permits it to produce more biomass.
• Sewan is the primary grass of extremely arid parts of Jaisalmer, Barmer and Bikaner districts of western Rajasthan in the Indian Thar desert.
• It thrives well under moisture stress on sandy plains, low dunes and hummocks of this region, receiving annual rainfall below 200 mm

The correct answer is Banswara.

Key Points

•  Koppen's Aw type of climate is in Banswara.

Additional Information 

• The Koppen climate classification scheme divides climates into five main climate groups:
  • ​ A (tropical), B (dry), C (temperate), D (continental), and E (polar).
• The second letter indicates the seasonal precipitation type, while the third letter indicates the level of heat.
• Aw, or the tropical wet and dry climate, also known as the savanna climate, where there is an extended dry season during the winter.

The correct answer is Winter rain.

• Popularly known as 'Mavath' in Rajasthan is Winter Rain.

Additional Information 

• During the winter, the flow of air reverses.
• The continent cools rapidly forming a large area of high pressure over north-central Asia, known as the Siberian High, and a smaller area over India.
• Now, the drier, colder air of the continent blows offshore creating the dry monsoon season.
• Many parts of southern India receive considerable rain from the northeast monsoon.
• Though the principal rainy season for interior Karnataka, Kerala and Lakshadweep is the Southwest Monsoon season, rainfall continues till December in these regions.
• Tamilnadu, in particular, typically gets nearly half its annual rain during this monsoon.
• It is known as Mavath.

The correct answer is Dungarpur - Banswara.

Key Points

• Mixed red and black soils are found in Dungarpur - Banswara.

Additional Information 

• Red Loamy Soil:
  • Southern Part of Rajasthan in Dungarpur, Banswara, Udaipur.
  • It lacks nitrogen and phosphorous and there is an excess of iron elements.
  • This soil has moisture-holding capacity.
  • By giving chemical fertilizer and irrigation in this type of soil rice, cotton, maize, wheat, sugarcane, etc. can be produced.
• Saline Soil:
  • South-Western Part of Rajasthan in Jalore Barmer.
  • This type of soil has a high amount of alkaline salts.
  • It is infertile, not suitable for cultivation.
  • Only shrubs grow in this soil.
• Sandy Soil:
  • Found in North-Western Part of Rajasthan in Bikaner, Jaisalmer, Jodhpur.
  • Soil particles are thick.
  • Less water holding capacity.
  • The soil lacks nitrogen and has calcium salts.

The correct answer is Kantli.

Key Points

• The river of inland drainage is Kantli.

Additional Information 

• Kantli River:
  • Kantli river originates from the hills of Khandela hills of Sikar district and taking a northerly course runs into Jhunjhunu and ends in sand dunes near Churu district.
  • Site of ancient OCP culture - Ganeshwar lies on the bank of the Kantli river.
  • The catchment area of the Kantli river is known as Torawat
  • The topography of the Shekhawati tracts is characterized by an undulating sandy terrain traversed by longitudinal sand dunes.
  • There is only one seasonal river Kantli.

The correct answer (A), (B), and (D)

Key Points

Western Sandy Plains of Rajasthan

• On the basis of the existing relief features, Rajasthan has been divided into
• The following physiographic divisions:
  • Western Sandy Plains: The Western Sandy Plains is subdivided into two units:
    • Sandy Arid Plains 
    • Marusthali
• Semi-Arid Transitional Plains (Rajasthan Bagar)
  • Luni Basin (Godwar Tract)
  • Plain of Interior Drainage (Shekhawati Tract)
  • Ghaggar Plain​

Important Points

• More than 60% of the Thar desert lies in the state of Rajasthan and extends into Gujarat, Punjab, and Haryana.
• The maximum area is covered in Rajasthan and the area of the total cover is 208,110 km.
  • covering the districts of Barmer, Jaisalmer, Jalor, Jodhpur, Bikaner, Ganganagar, Churu, Jhunjhunun, Sikar, Nagaur, and Pali.
• The Thar Desert, also known as the Great Indian Desert.
• It is the world's 20th-largest desert and the world's 9th-largest hot subtropical desert.
  • About 85% of the Thar Desert is in India, and about 15% is in Pakistan.
• The northeastern part of the Thar Desert lies between the Aravalli Hills.
  • The Western Sandy Plains is one of the most prominent physical divisions of Rajasthan. It covers a large part of the state in the west and the northwest of the Aravalli axis.​