If you collect 62 ml of gravitational water in a graduated cylinder and you started with 100 ml of water that you poured through your soil sample, then what's the volume of your capillary water

38.

Explanation:

All water that are present in soil is not available for the plants. Gravitation water is present in soil due to the gravitational force. The gravitation water remains for short time and cannot be consumed by the plants.

The capillary water is available to the plants and this water is attained in the soil pores. The total water present in soil sample is 100 ml. 62ml is gravitation water. The volume of capillary water = total water - gravitation water = 100 - 62 = 38ml.

Thus, the answer is 38ml.