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49.

The process of diffusion of one liquid into the other through a semi-permeable membrane is called                        
A. viscosity B. osmosis
C. surface tension D. cohesion



50.

The property of a fluid which enables it to resist tensile stress is known as                        
A. compressibility B. surface tension
C. cohesion D. adhesion



51.

The property of fluid by virtue of which it offers resistance to shear is called                        
A. surface tension B. adhesion
C. cohesion D. viscosity




52.

The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to                        
A. Buoyancy B. Equilibrium of a floating body
C. Archimedes' principle D. Bernoulli's theorem



53.

The resultant upward pressure of the fluid on an immersed body is called                        
A. upthrust B. buoyancy
C. centre of pressure D. all the above are correct



54.

The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will                        
A. increase B. remain unaffected
C. may increase or decrease depending on the characteristics of liquid D. decrease



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