Question Discussion & Solution

The correct answer is Udaipur.

Key Points

• Rajasthan is home to various tribal and nomadic populations, with tribals accounting for around 13.48 percent of the state's population (Census 2011). 
• Rajasthan is ranked 6th in India in terms of tribal population (Madhya Pradesh has 1st place).
• Udaipur has the biggest number of tribal people among Rajasthan's districts, while Bikaner has the lowest.
• According to the 2011 Census, the districts of Bikaner and Nagaur in Rajasthan have the lowest percentage of Scheduled Tribes in their overall population. ​

Important Points

• According to the 2001 Census, Rajasthan's Scheduled Tribe (ST) population was 7,097,706, accounting for 8.4% of India's overall ST population.
• The state's Scheduled Tribes account for 12.6 percent of the state's total population (56,507,188). In terms of the percentage share of the ST population in the total population, it ranks 12th among all States and UTs.
• During the period 1991-2001, the ST population grew at a pace of 29.6%, which is 1.2 percent faster than the overall population.

The correct answer is Maharashtra.

Key Points

• Rajasthan is a state in the northwestern part of India bordering Punjab, Haryana, New Delhi, Madhya Pradesh and Gujarat.
  • The state also shares a border with the neighboring country of Pakistan.
  • Among the given options, Maharashtra is the state of India with which Rajasthan does not share its border.​ 

Additional Information 

• The Tropic of Cancer passes through eight states in India:
  • Mizoram (Champhai)
  • Tripura (Udaipur)
  • West Bengal (Krishnanagar)
  • Jharkhand (Lohardaga)
  • Chhattisgarh (Sonhat)
  • Madhya Pradesh (Shajapur)
  • Rajasthan (Kalinjarh)
  • Gujarat (Jasdan)
• The Tropic of Cancer does not pass through Orissa.
• Tropic of Cancer passes through the middle part of India. 
• From the extends south to north, the mainland of India extends between 8°4’N and 37°6’N latitudes.
• From the other extends west to east, India extends between 68°7’E and 97°25’E longitudes.
• Due to the great longitudinal extent and difference of about 29°, ta wide differences in local time of places located at two extreme points of the country.
• The difference between these two points would be approximately two hours.

• A rock is any naturally occurring solid mass or aggregate of one or more minerals or mineraloid matter.
• The earth's crust is composed of rocks.
• It is categorized by the minerals included its chemical composition and the way in which it is formed.
• The rock cycle is a basic concept of transitions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous.
• Each rock type is altered when it is forced out of its equilibrium conditions.

​Metamorphic Rocks

• ​The word metamorphic means ‘change of form’.
• These rocks form under the action of pressure, volume and temperature (PVT) change.
• Metamorphism occurs when rocks are forced down to lower levels by tectonic processes.
• Or when molten magma rising through the crust comes in contact with the crustal rocks.
• Or the underlying rocks are subjected to great amounts of pressure by overlying rocks.
• Metamorphism is a process by which already consolidated rocks undergo recrystallisation and reorganisation of materials within original rocks.
• Common metamorphic rocks include slate, schist, gneiss, and marble.

​
Thus, marble is an example of metamorphic rock.

​

Igneous Rocks:

• Igneous Rocks are formed by crystallization from a liquid or magma.
• They are also known as primary rocks.
• There are two types of Igneous rocks based on their mode of occurrence: 

1. Volcanic or extrusive igneous rocks that form when the magma cools and crystallizes on the surface of the Earth
2. Intrusive or plutonic igneous rocks wherein the magma crystallizes at depth in the Earth.

• Magma is a mixture of liquid rock, crystals, and gas with a wide range of chemical compositions, temperature, and properties of a liquid.​

Sedimentary Rocks:

• ​The word ‘sedimentary’ is derived from the Latin word sedimentum, which means settling.
• Sedimentary rocks are called secondary rocks.
• They are often the result of the accumulation of small pieces broken off of pre-existing rocks.
• In many sedimentary rocks, the layers of deposits retain their characteristics even after deposition.
• Hence, we see a number of layers of varying thickness in sedimentary rocks like sandstone, shale etc.

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 740 meters.

• The approximate height of Dhosi hill above sea level is 740 meters.

Key Points

• Dhosi hill
  • ​Dhosi Hill is an extinct volcano.
  • It is standing alone at the northwest end of the Aravalli mountain range, of which it is a part, with height varying from about 345 to 470 meters from the surrounding land.
  • It is 740 meters from sea level. 
  • Dhosi Hill is located on the borders of Haryana and Rajasthan.

Additional Information

Top 3 Major mountain peaks of the Aravali Ranges of Rajasthan: