CUET Preparation Today
Assertion: The wind erosion has been reduced in Command Area of Rajasthan Canal. However, the problem of siltation of canals has been icreased in Rajasthan's Indira Gandhi Canal. Reasoning: The availability of soil moisture for a longer period of time and various afforestation and pasture development programmes under CAD have resulted in these changes. |
Both Assertion (A) and reasoning (R) are correct, and R is the correct explanation of A. Both Assertion (A) and reasoning (R) are correct, but R is not the correct explanation of A. Assertion (A) is correct, but Reasoning (R) is incorrect. Assertion (A) is incorrect, but Reasoning (R) is correct. |
Assertion (A) is incorrect, but Reasoning (R) is correct. |
The correct answer is option 4: Assertion (A) is incorrect, but Reasoning (R) is correct. Assertion: The wind erosion has been reduced in Command Area of Rajasthan Canal. However, the problem of siltation of canals has been icreased in Rajasthan's Indira Gandhi Canal. This statement is incorrect because the developmental measures in the canal command area helped in reducing both wind erosion and siltation problems. This reduced the movement of sand and dust by wind, due to which lesser soil entered the canals and the problem of siltation decreased (not increased). Reasoning: The availability of soil moisture for a longer period of time and various afforestation and pasture development programmes under CAD have resulted in these changes.This statement is correct. Increased soil moisture and vegetation cover improved environmental conditions and helped control erosion-related problems. The availability of soil moisture for a longer period and the development of vegetation through afforestation and pasture programmes helped bind the loose desert soil. NCERT: "The introduction of canal irrigation in this dry land (Rajasthan) has transformed its ecology, economy and society. It has influenced the environmental conditions of the region both positively as well as negatively. The availability of soil moisture for a longer period of time and various afforestation and pasture development programmes under CAD have resulted in greening the land. This has also helped in reducing wind erosion and siltation of canal systems. But the intensive irrigation and excessive use of water have led to the emergence of twin environmental problems of waterlogging and soil salinity." |
