Question Discussion & Solution

The correct answer is Flood-prone eastern plain.

Key Points

• Flood-prone eastern plain:
  • Districts covered in this climatic zone are Alwar, Dholpur, Bharatpur, Karoli, S.Madhopur.
  • The average rainfall of this zone is 500-700 mm.
  • Major Kharif crops grown in this zone are Pearlmillet Clusterbean Groundnut.
  • Major Rabi crops grown in this zone are Wheat, Barley, Mustard, Gram.
  • Alluvial soil is found in this zone.

Additional Information

• Sub-humid southern plains:
  • Districts covered in this climatic zone are Bhilwara, Sirohi, Udaipur, Chittorgarh.
  • Major Kharif crops grown in this zone  Maize, Pulses, Sorghum.
  • Major Rabi crops grown in this zone are Wheat, Gram. 
• Semi-arid eastern plains:
  • Districts covered in this climatic zone are Jaipur, Ajmer, Dausa, Tonk
  • Major Kharif crops grown in this zone are Pearlmillet, Clusterbean, Sorghum.
  • Wheat, Mustard, Gram
• Hyper arid partial irrigated zone:
  • Districts covered in this climatic zone are Bikaner, Jaisalmer, Churu
  • Major Kharif crops grown in this zone are Pearlmillet, Mothbean, Clusterbean.
  • Major Rabi crops grown in this zone are Wheat, Mustard, Gram.

The correct answer is A - i, B - ii, C - iii, D - iv.

Key Points

•  Aridisols soil
  • These are CaCO₃-containing soils of arid regions that exhibit subsurface horizon development.
  • They are characterized by being dry most of the year and limited leaching.
  • They contain subsurface horizons in which clays, calcium carbonate, silica, salts, and/or gypsum have accumulated.
• Inceptisols soil
  • It exhibits minimal horizon development.
  • They are more developed than Entisols, but still lack the features that are characteristic of other soil orders.
  • A sizable percentage of Inceptisols are found in mountainous areas and are used for forestry, recreation, and watershed.
  • They occur in cool to very warm and humid to subhumid climates, from the arctic to the tropics.
  • They are found in Semi-arid and humid regions.
• Alfisols soil
  • They are moderately leached soils that have relatively high native fertility.
  • These soils have mainly formed under forest and have a subsurface horizon in which clays have accumulated.
  • They are primarily found in temperate humid and subhumid regions of the world.
• Vertisols
  • They are clayey soils that have deep, wide cracks for some time during the year.
  • They shrink as they dry and swell as they become moist.
  • The natural vegetation is predominantly grass, savanna, open forest, or desert shrub.
  • They are found in Humid and super-humid regions.

Soil distribution:

The correct answer is Chambal.

Important Points

• Kota city is situated on the bank of the Chambal River.

 Key Points

• Chuliya falls is formed on the Chambal River.
• The Chambal River is a tributary of the Yamuna River in central India.
• Chambal River originates from the Janapav, south of Mhow town on the south slope of Vindhya Range in Madhya Pradesh.
• Chambal flows north-northeast through Madhya Pradesh, running for a time through Rajasthan, then forming the boundary between Rajasthan and Madhya Pradesh before turning southeast to join the Yamuna in Uttar Pradesh.
• Right bank tributaries of Chambal River
  • Parbati
  • Kali Sindh
  • Shipra
• Left bank tributaries of Chambal River
  • Banas
  • Mej
• Major dams on the Chambal River
  • Gandhi Sagar Dam
  • Rana Pratap Sagar Dam
  • Jawahar Sagar Dam
  • Kota Barrage

Additional Information

•  River Ghaghara
  • Major left-bank tributary of the Ganga River.
  • It rises as the Karnali River in the high Himalayas of southern Tibet Autonomous Region, China, and flows southeast through Nepal.
  • It cuts southward across the Siwalik Range, it splits into two branches that rejoin south of the Indian border and form the Ghaghara proper.
  • It flows southeast through Uttar Pradesh and Bihar states to enter the Ganges below Chapra after a 600-mile (970-km) course.
• River Narmada
  • The Narmada rises at an elevation of about 3,500 feet (1,080 meters) in the Maikala Range in eastern Madhya Pradesh state on the border with Chhattisgarh state.
  • It first follows a tortuous course through the hills near Mandla and then turns northwest to pass the city of Jabalpur.
  • There it turns southwest and then enters the structural trough between the Vindhya and Satpura ranges at Marble Rocks Gorge. 
  • Turning more westward, the river continues across Madhya Pradesh until it passes into Gujarat state.
  • The Narmada enters the Gulf of Khambhat through an estuary 13 miles (21 km) wide, just below Bharuch.
• River Sabarmati
  • It originates in the Aravalli Range of the Udaipur District of Rajasthan and meets the Gulf of Khambhat of the Arabian Sea after traveling 371 km (231 mi) in a south-westerly direction across Rajasthan and Gujarat.
  • It is one of the major west-flowing rivers in India.

The correct answer is d only.

• The Climatic Regions of Rajasthan by Koeppen are Four.
  • Aw
  • BShw
  • BWhw
  • Cwg

Key Points

• Aw:
  • It is Tropical Humid region.
  • This type of climate is found in the southern part of the Rajasthan.
  • It covers the areas of Dungarpur, Banswara, Chittorgarh and Jhalawar.
  • Here the temperature range is as follows.
    • Summer - 30-34 degree
    • Winter - 12-15 degree
  • Yearly Rain - 80 cm i.e. 800 mm 
  •  Vegetation - 
    • Deciduous trees of Monsoon type
    • Dense
    • Savanna like region
    • Arid Tropical grassland
  • In Mount Abu, the average rainfall is 150 cm.
• BShw:
  • It is Semi-Arid.
  • It is found in the Western side of Aravali.
  • It covers the areas of Barmer, Jalore, Jodhpur, Nagore, Churu, Sikar, Jhunjhunu.
  • Average Rainfall - 20-40 cm
  • Here the temperature range is as follows.
    • Summer - 32-35 degree
    • Winter - 5-10 degree
  •  Vegetation -
    • Steppe
      • In physical geography, a steppe is an ecoregion characterized by grassland plains without trees.
    • Thorny bushes and grasses.
• BWhw:
  • It is the Arid Hot Desert region.
  • It covers the areas of Jaisalmer, Bikaner, Shriganganar, Hanumangarh.
  • Average Rainfall - 10-20 cm
  • Here the temperature is as follows.
    • Summer - 35 degree
    • Winter - 12-18 degree
    • Vegetation -
      • Vegetation less
      • Scanty Rainfall
      • Tough environment
      • Process of evaporation is very active.
• Cwg:
  • It is Sub Humid, Monsoonal type.
  • It is located at the southeastern part of the Aravali.
  • Areas - Hadoti, Mewat and Dang areas i.e Rajsamand, Bhilwara, Tonk, Dausa, Sawai Madhopur, Alwar, Bharatpur, Dholpur, Kota, Baran, Northern Chittorgarh.
  • Here Bhihad is found.

The correct answer is Typical orientation of the Aravalli range

Key Points

• The typical orientation of the Aravalli Range is the root cause of scant rain in Rajasthan.
• Rajasthan receives scanty rainfall.
• The two main reasons are:
  • The Bay of Bengal branch of the Indian monsoon loses its moisture by the time it reaches the north-western part of India where Rajasthan is located.
  • And the Arabian sea branch of the monsoon flows parallel to the Aravalli Mountains and reach the northern part of India but does not shed moisture over Rajasthan.

Additional Information

• About Rajasthan:
  • Established: 30 March 1949
  • Districts: 33
  • Area: 3,42,239 Sq. Km.
  • Located between 23 30’ and 30 11’ North latitude and 69 29’ and 78 17’ East longitude.
  • It shares an international border with Pakistan and a national boundary with 5 states of India including Punjab, Haryana, Uttar Pradesh, Madhya Pradesh and Gujarat.