For which one of the following is capillarity not the only reason ?

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Q: 115 (IAS/1999)
For which one of the following is capillarity not the only reason ?

question_subject: 

Science

question_exam: 

IAS

stats: 

0,17,37,10,17,14,13

keywords: 

{'capillarity': [0, 1, 0, 0], 'foliage': [0, 1, 1, 1], 'underground water': [0, 0, 1, 1], 'water': [65, 15, 80, 129], 'ink': [0, 1, 0, 3], 'water drop': [0, 1, 0, 0], 'plant': [1, 0, 0, 2], 'cotton cloth': [0, 1, 0, 1], 'roots': [9, 2, 8, 7], 'blotting': [0, 1, 0, 0], 'only reason': [0, 1, 0, 0]}

Capillarity is not the only reason for the rising of underground water. The rising of underground water is primarily due to the process of groundwater flow, which is driven by several factors such as gravity, pressure gradients, and permeability of the underground materials. Capillarity plays a minor role in the overall movement of groundwater, especially in the case of deep underground water sources. Therefore, the correct answer is "Rising of underground water."