Question

With increase in temperature, the viscosity of:

• A. gases decreases and liquid increases
• B. gases increases and liquid decreases
• C. both gases and liquid increases
• D. both gases and liquid decreases

Answer 1

The correct option is B gases increases and liquid decreases

The viscosity of liquid is inversely proporional to the square of the temperature, therefore as we increase the temperature, the viscosity of liquids will decrease.

Similarly, the viscosity of gases is linearly proportional to the temperature. hence as the temperature increases, the viscosity will increase