Question Discussion & Solution

The correct answer Banswara District 

Key Points

District-wise distribution of the tribal population

• District-wise distribution of the tribal population shows that they have their highest concentration in Banswara district (72.3 percent), followed by 65.1 percent and 47.9 percent in Dungarpur and Udaipur districts respectively.
• Nagaur ( 0.2 percent) preceded by Bikaner (0.4 percent) has the lowest share of tribal population in the total population.

​Rajasthan as per the 2011 census

• The second major tribe, Bhil has a share of 99 percent of all ST population in Barmer district followed by Jaisalmer, Jodhpur, Rajsamand (95 percent) districts.
• The Scheduled Tribes of the State have registered considerably lower sex ratio both in total as well as in the 0-6 yrs
  • As per the 2001 census, the Scheduled Tribe (ST) population of Rajasthan State is 7,097,706 constituting 8.4 percent of the total ST population of India.
• The Scheduled Tribes of the State constitute 12.6 percent of the total population (56,507,188) of the State.
• It holds 12th position among all States and UTs in respect of the percentage share of ST population to the total population.
• The ST population has registered a growth rate of 29.6 percent during 1991-2001 which is 1.2 percent higher than the growth of the total population.
• The Scheduled Tribes are overwhelmingly rural as 94.6 percent of them inhabit rural areas whereas 76.6 percent of the total population of the state live in villages.

Important Points

• Out of twelve (12) tribes scheduled for the State, Mina is the most populous tribe, having a population of 3,799,971 constituting 53.5 percent of the total ST population followed by Bhil (2,805,948).
• Mina and Bhil together constitute 93 percent whereas Garasia, Damor, Dhanka & Saharia combine to form 6.6 percent of the total ST population.
• Six tribes, Bhil Mina, Naikda, Kathodi, Patelia, Kokna, and Koli Dhor along with the generic tribes constitute the residual 0.3 percent of the total tribal population.
• Among the twelve STs, Koli Dhor is the smallest tribe with a population below 100 preceded by Kokna (405), Patelia (1,045), Kathodi (2,922) etc.  

The correct answer (A) and (D).

Key Points Aw or Tropical Humid Region:

• The southern parts of the Dungarpur district and Banswara come under the region.
• Here, arid tropical grasslands and Savanna regions are found along with deciduous trees of monsoon type.
• The Winter season is arid and cool whereas summers experience scorching heat.
• Rainfall also mainly occurs in the summer season.
• The temperature is more than 18-degree celsius in the coldest month records.

CWG Climatic Region:

• The south-eastern areas of Aravalli are part of the region.
• Rains are limited to a few monsoon months only.
• Seasonal winds do not bring rains to this region during winters.

Bwhw Climatic Region:

• The region has an arid-hot desert climate with very scanty rainfall.
• On the contrary, the process of evaporation is very active.
• Thus, these areas are known as desert regions, limited to western parts of the Thar Desert.
• North-western Jodhpur, Jaisalmer, western Bikaner are included in this category.

Bshw Climatic Region:

• This climatic region is semi-arid, where winters are dry and even in summers there is no sufficient amount of rainfall.
• Vegetation is of steppe type, characterized by thorny bushes and grasses.
• This region comprises the districts of Barmer, Jalore, Jodhpur, Nagaur, Churu, Sikar, Jhunjhunu, and Hanumangarh.​​

Important Points

Koppen climate classification: The Koppen climate classification divides climates into four main climate groups in respect of Rajasthan, with each group being divided based on vegetation.

The Indian Standard Time (IST) :

• The Indian Standard Time is calculated from 82°30’E meridian passing through Mirzapur.
• IST is plus 5.30 hours from the GMT. 
• It does not take into account daylight saving time along with other seasonal factors. India has only one timezone.

Greenwich Mean Time (GMT) : 

• Greenwich Mean Time (GMT), the name for the mean solar time of the longitude (0°) of the Royal Greenwich Observatory in England. 
• The meridian at this longitude is called the prime meridian or Greenwich meridian.

Important Points

International dateline :

• The prime meridian also helps establish the International Date Line.
• The Earth's longitude measures 360o, so the halfway point from the prime meridian is the 180 longitude line.
• The meridian at 180 longitudes is commonly known as the International Date Line.
• As you pass the International Date Line, you either add a day (going west) or subtract a day (going east.)

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 (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.​