Question:
Permeability of soil:
Permeability of soil:
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As temperature increases,
\[
\boxed{
\uparrow T \Rightarrow \downarrow \mu \Rightarrow \uparrow k
}
\]
where \(k\) is permeability and \(\mu\) is viscosity.
Updated On: Jul 23, 2026
- Increases with increase in temperature.
- Decreases with increase in temperature.
- Is independent of temperature.
- May increase/decrease with temperature based on chemical composition of soil.
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The Correct Option is A
Solution and Explanation
Step 1: Recall the factors affecting permeability.
The coefficient of permeability depends on the viscosity of the pore fluid.
Step 2: Effect of temperature. As temperature increases, the viscosity of water decreases. Since \[ k\propto\frac{1}{\mu}, \] the coefficient of permeability increases. Thus, \[ \boxed{\text{Permeability increases with increase in temperature}.} \] Hence, \[ \boxed{(A)} \] is the correct answer.
Step 2: Effect of temperature. As temperature increases, the viscosity of water decreases. Since \[ k\propto\frac{1}{\mu}, \] the coefficient of permeability increases. Thus, \[ \boxed{\text{Permeability increases with increase in temperature}.} \] Hence, \[ \boxed{(A)} \] is the correct answer.
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