**Viscosity** of most liquids with rising temperature:
- Increases
- Decreases
- Stays constant
- First increases then decreases
Show answer and solution
Correct answer: B. Decreases
**Liquids:** viscosity ↓ with T (molecules farther apart, cohesive forces weaker).
**Gases:** viscosity ↑ with T (faster molecules, more collisions). Important distinction!