Which of the following statements with regard to the expansion of the desert in Rajasthan is /are correct ? 1. The predominant wind direction in Rajasthan is northeast to southwest, so the tendency for desertification , has been more in that direction. 2.

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Q: 100 (CDS-II/2010)
Which of the following statements with regard to the expansion of the desert in Rajasthan is /are correct ?
1. The predominant wind direction in Rajasthan is northeast to southwest, so the tendency for desertification , has been more in that direction.
2. The Thar desert is dominantly a monsoon driven sand desert where wind erosion is a major problem during the summer months. While the Aravalli range is a major barrier in the spread of the desert, rampant mining creating cuts in the range is leading to the spread of the desert.

Select the correct answer using the code given below:

question_subject: 

Geography

question_exam: 

CDS-II

stats: 

0,27,25,4,19,27,2

keywords: 

{'desertification': [1, 0, 1, 1], 'rajasthan': [0, 0, 1, 18], 'desert': [0, 0, 0, 1], 'thar desert': [0, 0, 0, 2], 'sand desert': [0, 0, 2, 0], 'expansion': [0, 0, 0, 1], 'monsoon': [1, 0, 2, 1], 'aravalli range': [0, 0, 1, 1], 'predominant wind direction': [0, 0, 1, 0]}

The correct answer is option 3, which states that both statements 1 and 2 are correct.

Statement 1 explains that the predominant wind direction in Rajasthan is northeast to southwest. This wind direction contributes to the tendency for desertification in that direction. Desertification refers to the process by which fertile land gradually turns into a desert. The statement implies that the northeast to southwest wind direction causes the expansion of the desert in Rajasthan.

Statement 2 describes the Thar desert as a predominantly monsoon-driven sand desert. It indicates that wind erosion is a major problem during the summer months in this desert. The statement also mentions that the Aravalli range acts as a significant barrier in preventing the spread of the desert. However, extensive mining causing cuts in the range is resulting in the expansion of the desert.

Therefore, both statements provide accurate information about the expansion of the desert in Rajasthan.