## The property by virtue of which a liquid opposes relative motion between its different layersis called

A) Surface tension

B) Co-efficient of viscosity

C) Viscosity

D) Osmosis

## The units of dynamic or absolute viscosity are

A) Metres2 per sec

B) Kg sec/meter

C) Newton-sec per meter

D) Newton-sec2 per meter

A) P = Txr

B) P = T/r

C) P = T/2r

D) P = 2T/r

## Surface energy per unit area of a surface is numerically equal to

A) Atmospheric pressure

B) Surface tension

D) Force of cohesion

## The free surface of a liquid behaves like a sheet and tends to contract to the smallest possible area due to the

B) Force of cohesion

C) Force of friction

D) None of the above

## The buoyancy depends on

A) Mass of liquid displaced

B) Viscosity of the liquid

C) Pressure of the liquid displaced

D) Depth of immersion

A) 500 kg

B) 1000 kg

C) 1500 kg

D) 2000 kg

## Falling drops of water become spheres due to the property of

B) Cohesion

C) Surface tension

D) Viscosity

## The free surface of a liquid tends to contract to the smallest possible area due to the force of

A) Surface tension

B) Viscosity

C) Friction

D) Cohesion

## The specific weight of seawater is more than that of pure water because it contains

A) Dissolved air

B) Dissolved salt

C) Suspended matter

D) All of the above