1. Tardigrade
  2. Question
  3. Physics
  4. When temperature is increased: (2004M) a) viscosity of the gas increases b) viscosity of the gas decreases c) viscosity of the liquid decreases d) viscosity of the liquid increases

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. When temperature is increased: (2004M)
a) viscosity of the gas increases
b) viscosity of the gas decreases
c) viscosity of the liquid decreases
d) viscosity of the liquid increases

Mechanical Properties of Fluids

Solution:

As the temperature increases, the molecules carry more momentum and collide more often, that means more viscosity for gas. As the temperature increases, the time of interaction between neighboring molecules of a liquid decreases because of the increased velocities of individual molecules. The macroscopic effect is that the inter molecular force appears to decrease and so does the bulk (or shear) viscosity. So, as temperature increases, viscosity of gas increases and of liquid decreases.