Piping in a soil mass is
a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit*
b) Caused due to very low exit gradient
c) Due to continuous passage of water through a series of well connected pores d) Due to loss of the strength of cohesion less soil because of upward flow of of water
a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit*
b) Caused due to very low exit gradient
c) Due to continuous passage of water through a series of well connected pores d) Due to loss of the strength of cohesion less soil because of upward flow of of water