What is the percolation of water? How is it different for different types of soil?

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Solution

The gravity flow of groundwater through the pore spaces in rock or soil is called the percolation of water. The rate of absorption is different for different types of soils. This phenomenon of absorption of water by soil is termed percolation. The percolation rate of water is different in different types of soil. It is highest in the sandy soil and least in the clayey soil. The rate of absorption of soil depends on its composition.
Percolation rate= Amount of water (mL)/ Percolation time (min)

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Appu’s father wants to grow onions on his farm. Appu’s farm has three kinds of soil in different areas. Onions grow best in loamy soil. So, Appu decided to measure the percolation rate for the three different soils on his farm. He used a device like the one shown below. Appu, however, forgot and added different quantities of water while testing the percolation rate for each soil. He measured the time taken for all the water added into the device to percolate and tabulated them.

$\begin{matrix} Soil Number & Quantity of water added & Time taken to percolate completely Soil 1 & 500 mL & 300 minutes Soil 2 & 200 mL & 30 minutes Soil 3 & 100 mL & 300 minutes \end{matrix}$

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$\begin{matrix} Soil Number & Quantity of water added & Time taken to percolate completely Soil 1 & 500 mL & 300 minutes Soil 2 & 200 mL & 30 minutes Soil 3 & 100 mL & 300 minutes \end{matrix}$

Which soil must be used to grow onions?

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