**Viscosity** of most liquids with rising temperature:
AIncreases
BDecreases
CStays constant
DFirst increases then decreases
Answer & 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!
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