RAS Mains World Geography: General Studies Paper-II- RAS/RTS Mains Examination
Unit III- Earth Science (Geography & Geology)
Part A- World
• Broad Physical Feature: Mountains, Plateaus, Plains, Lakes and Glaciers
• Earthquakes and Volcanoes: Types, distribution and their impact
• Earth and its Geological time scale
• Current Geopolitical Problems- RAS Mains World Geography
Rajasthan, situated at the northwestern part of India is the biggest state in the country of India and lies between 23°30′ and 30° 11′ North latitude and 69° 29′ and 78° 17′ East longitude. The state shares its north-western and western boundary with the Indo-Pakistan international border that extends about 1,070 km and touches the major districts Barmer, Bikaner, Sriganganagar and Jaisalmer. It is bounded on the west and northwest by Pakistan, on the north and northeast by Haryana &Uttar Pradesh, on the south-southeast and southwest by Madhya Pradesh and Gujarat States respectively. The huge portion of the state of Rajasthan is desiccated and houses the biggest Indian desert- the Thar Desert known as the ‘Maru-kantar’. The oldest chain of fold mountains- the Aravali range splits the state into two geographical zones- desert at one side and forest belt on the other. Only 10% of the total geographical region lies under forest vegetation. The Mount abu is the only hill station of the state and houses the Guru Shikhar Peak that is the highest peak of the Aravali range with an elevation of 1,722 m. The area to the east of the hills is covered by the eastern plains and the Vindhyan plateau. Rajasthan GK Yearbook 2020
The north-western state of Rajasthan is the largest Indian state with an area of 3, 42,239sq.km comprising of the 10.74% of the total geographical area of the country. This state has a type of rhomboid shape and stretches lengthwise 869 km. from west to east and 826 km. from north to south. The Tropic of Cancer passes through its south tip in its Banswara district.
The Aravalli ranges are India’s oldest fold mountains. The north end of the Aravalli range continues as secluded hills and rocky ridges into Haryana and ending in Delhi.
The Aravalli Range and the lands to the east and southeast of the range are generally more fertile and better watered. This region is home to the Kathiawar-Gir dry deciduous forests eco-region with tropical dry broadleaf forests that include teak, Acacia and other trees. The hilly Vagad region lies in southernmost Rajasthan on the border with Gujarat. With the exception of Mount Abu, Vagad is the wettest region in Rajasthan and the most heavily forested. North of Vagad lays the mewar region home to the cities of Udaipur and Chittaurgarh in Rajasthan. The Hadoti region lies to the southeast on the border with Madhya Pradesh. The dhundhar region is located in the north of Hadoti and mewar is also known as home to the state capital of Jaipur in Rajasthan. Mewat, the easternmost region of Rajasthan borders with Haryana and Uttar Pradesh. Eastern and southeastern Rajasthan is drained by the Banas and Chambal rivers, tributaries of the Ganges.