For the following questions answer them individually
If the volume of voids is equal to the volume of solids in a soil mass, then the values of porosity and voids ratio respectively are
In open channel flows, the characteristic length commonly used in defining the Reynolds number is the
The most economical section of a rectangular channel is one having hydraulic radius equal to
In a rectangular channel, the ratio of the specific energy at critical depth $$E_c$$ to the critical depth $$y_c$$ is