Question

The pore water pressure in the capillary zone is

• A. Positive
• B. Zero
• C. Negative
• D. Very small

Hint:

Below the water table: \[ \boxed{u>0} \] At the water table: \[ \boxed{u=0} \] Above the water table (capillary zone): \[ \boxed{u<0} \]

Answer 1

The Correct Option is C

Step 1: Recall the capillary zone. The capillary zone lies immediately above the groundwater table where water rises due to capillary action.

Step 2: Determine the pore water pressure. In this zone, the pore water is under tension (suction), so the pore water pressure is \[ \boxed{\text{Negative}.} \] Hence, \[ \boxed{(C)} \] is the correct answer.