Viscosity is the ...

Viscosity is the ...

• A. Thermal property
• B. Internal resistance
• C. Color of the liquid
• D. Temperature

Answer: (B)

Viscosity is the internal resistance to flow inside a liquid. It describes how strongly the molecules resist sliding past each other due to cohesive forces and the fluid’s structure. A high-viscosity liquid, like syrup, flows slowly because its molecules cling together and oppose deformation, while a low-viscosity liquid, like water, flows easily. It’s not a thermal property, nor the color of the liquid, and although temperature affects viscosity (raising temperature usually lowers it), viscosity itself is this internal resistance to flow.

Viscosity is the internal resistance to flow inside a liquid. It describes how strongly the molecules resist sliding past each other due to cohesive forces and the fluid’s structure. A high-viscosity liquid, like syrup, flows slowly because its molecules cling together and oppose deformation, while a low-viscosity liquid, like water, flows easily. It’s not a thermal property, nor the color of the liquid, and although temperature affects viscosity (raising temperature usually lowers it), viscosity itself is this internal resistance to flow.