Question
Question: The viscosity of an oil decrease when temperature _________...
The viscosity of an oil decrease when temperature _________
A
Increases
B
100°C
C
is constant
D
Decreases
Answer
Increases
Explanation
Solution
Viscosity of a liquid is inversely proportional to temperature. As temperature increases, the average kinetic energy of the molecules increases, leading to weaker intermolecular forces and reduced resistance to flow, thus decreasing viscosity. Oil is a liquid, so its viscosity decreases when temperature increases.