1. Indian black soil is commonly known as black cotton soil or "Regur".

2. Black soil is known as black cotton soil because cotton is an important crop which is grown in this type of soil.

3..Black soil is good for the production of cotton, oilseeds, wheat, linseed, millet and tobacco. This soil is rich in calcium carbonate, potash, lime but has low phosphorus content. Black soils can hold a lot of moisture.

4. It is mostly found in the peninsular plateau of India.

According to Article 316(1) of the Constitution, the Chairman and other members of the Union Public Service Commission or Joint Public Service Commission are appointed by the President.

1. Qatar will host the FIFA World Cup 2022.

2. 32 teams will participate in this World Cup.

3. This will be the first World Cup to be held in the Arab world.

1. Chief Minister Vasundhara Raje launched the 'Grow Cotton - Get Happiness' campaign of the Shri Vallabh Pitti Group at Dhanodi in the Jhalawar district.

2. This campaign will give good income to the farmers from their cotton cultivation and will help them become financially strong.

3. Due to this campaign, the area under cotton cultivation in Rajasthan has increased significantly.

Khair forest areas in Rajasthan are found in Kota-Sawai Madhopur.

1. Cotton is a tropical and subtropical bushy plant, whose height can range from 1.5 to 2 meters.

2. Many pods grow on this plant. In these pods, there is a fibre wrapped around the seeds. Clothes are prepared from this fibre. Its seeds are used as animal fodder.

3. Oil is also extracted from its seeds. After extracting the oil, the remaining part is also used as animal fodder and fertilizer.

4. The two major cotton-producing districts in Rajasthan are Ganganagar and Hanumangarh.

1. Red loam soil has been characterized as loose, permeable and lacking compaction components.

2. These soils are deficient in organic matter, phosphate and nitrogen.

3. Potash is present in sufficient quantity in some soils.

4. Because they are not very fertile, red sandy loam soils are poor for farming.

5. Red loamy soil can be found in the southern region of the state, in Dungarpur and Banswara districts, as well as at some places in Udaipur and Chittorgarh.

6. Some crops suitable for red soil are cotton, wheat, rice, pulses, millets, tobacco, oilseeds, potatoes and fruits.

Parabolic Sand Dune-

1. Parabolic Sand Stupa is also called Parabolic Sand Stupa.

2. Sand stupas like Barkhan's viparita or women's hair pin (clip) are called parabolic sand stupas.

3. Parabolic sand stupas in Rajasthan are generally found in Jaisalmer, Bikaner, Barmer and Jodhpur.