Adry soil sample has a volume of 500 ml. after 400 ml of water are added to the soil, the soil becomes saturated with 150 ml of surface water left on top. what is the porosity of the soil? 30% 38% 50% 63%

50%

Explanation: The porosity of a soil sample, is determined by calculating the volume of the empty spaces between particles by seeing how much water it takes to fill all those little pores. As we are given out of 400 ml , 150 ml of water has been left , that means (400ml-150ml)= 250 ml of water has been taken by the pores or voids.

             = 50%

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