Match the list-1 with list-2 and select the correct answer using the codes given below,

Property of Fluid	Description
a. Viscosity	1. Property which explains the spherical shape of the drop of liquid
b. Surface Tension	2. Property which explains the rise of liquid in tube
c. Compressibility	3. Property which explains the resistance of a fluid to flow
d. Capillarity	4. Property which explains the measure of the relative volume change of a fluid in response to the pressure change

Explanation:

Viscosity

• It is the property of a fluid that resists motion or flow.

• It measures the internal friction within the fluid as different layers move past one another.

• Higher viscosity means a thicker fluid (like honey), lower viscosity means a thinner fluid (like water).

• Mathematically related to shear stress and velocity gradient in fluid mechanics.

 Additional Information

Surface Tension

• It is the property of the surface of a liquid that causes it to behave like a stretched elastic membrane.

• Responsible for the spherical shape of droplets and phenomena like insects walking on water.

• Caused by cohesive forces between liquid molecules at the surface.

Compressibility

• It measures the ability of a fluid to change its volume under the effect of pressure.

• Gases are highly compressible, liquids are only slightly compressible.

• Important in aerodynamics, hydraulics, and designing pressurized systems.

Capillarity (Capillary Action)

• It is the ability of a fluid to rise or fall in a narrow tube against gravity.

• Caused by the combination of adhesive forces between fluid and surface and cohesive forces within the fluid.

• Commonly seen in soils, plant roots, and thin tubes (capillary tubes).