Surface energy per unit area of a surface is numerically equal to___________________?
		A. atmospheric pressure
B. surface tension
C. force of adhesion
D. force of cohesion
E. viscosity
		A. atmospheric pressure
B. surface tension
C. force of adhesion
D. force of cohesion
E. viscosity
		A. 1 mm
B. 5 mm
C. 10 mm
D. 20 mm
E. 30 mm
		A.p = Txr
B.p = T/r
C. p = T/2r
D. p = 2T/r
E. none of the above
		A. 2.4 m above the hydraulic gradient
B. 6.4 m above the hydraulic gradient
C. 10.0 m above the hydraulic gradient
D. 5.0 above the hydraulic gradient
E. none of the above
		A. less man the vapour pressure over the plane surface
B. equal to the vapour pressure over the plane surface
C. greater than the vapour pressure over the plane surface
D. zero
E. none of the above
		A. atmospheric pressure
B. surface tension
C. force of adhesion
D. force of cohesion
E. viscosity
		A. force of adhesion
B. force of cohesion
C. force of friction
D. force of diffusion
E. none of die above
		A. 1 mm
B. 5 mm
C. 10 mm
D. 20 mm
E. 30 mm
		A.p = Txr
B.p = T/r
C. p = T/2r
D.p = 2T/r
E. none of the above
		A. less man the vapour pressure over the plane surface
B. equal to the vapour pressure over the plane surface
C. greater than the vapour pressure over the plane surface
D. zero
E. none of the above