Capillary action is due to the__________________?
		A. surface tension
B. cohesion of the liquid
C. adhesion of the liquid molecules and the molecules on the surface of a solid
D. all of the above
E. none of the above
		A. surface tension
B. cohesion of the liquid
C. adhesion of the liquid molecules and the molecules on the surface of a solid
D. all of the above
E. none of the above
		A. linearly
B. first slowly and then steeply
C. first steeply and then gradually
D. unpredictable
E. none of the above
		A. Without entry ladders
B. Without manhole covers
C. With depths more than 3.5 m
D. Having drains at different levels 
		A. Red wood
B. Say bolt
C. Engler
D. Orsat
E. none of the above
		A. Newton’s law of motion
B. Newton’s law of viscosity
C. Pascal’ law
D. Continuity equation
E. Boundary layer theory
		A. metres2 per sec
B. kg sec/metre
C. newton-sec per metre2
D. newton-sec per metre
E. none of the above
		A. steady flow
B. turbulent flow
C. laminar flow
D. non-uniform flow
E. all of the above