Matching List I with List II

The question requires matching physical phenomena and concepts in List I with their corresponding principles or properties in List II.

Analysis of Matches

• A. Lubrication: Lubrication reduces friction between surfaces. This property is directly related to the resistance of a fluid to flow, which is known as Viscosity. Therefore, A matches with 3.
• B. Rise of sap in trees: The upward movement of water and dissolved nutrients in plants (sap) through narrow xylem tubes is significantly explained by Capillary action, influenced by adhesion and cohesion. Therefore, B matches with 1.
• C. Formation of droplets: Liquids tend to form spherical droplets to minimize their surface area. This tendency is a direct result of Surface tension. Therefore, C matches with 4.
• D. Cavitation: Cavitation occurs when the local pressure in a liquid drops sufficiently to form bubbles of vapour. This happens when the pressure falls below the Vapour Pressure of the liquid. Therefore, D matches with 2.

Correct Code Selection

Based on the analysis:

• A matches with 3 (Viscosity)
• B matches with 1 (Capillary)
• C matches with 4 (Surface tension)
• D matches with 2 (Vapour Pressure)

The correct code representing these matches is A-3; B-1; C-4; D-2.