Question

4. Which of the following statements regarding a liquid is not correct? a) 1 Pa.s \( =10 \) poise. b) The viscosity of a liquid decreases with increase in temperature. c) The SI unit of viscosity is Pa.s. d) The viscosity of a gas decreases with merease in temperature.

Answer 1

The Viscosity of a gas decreases with merease in temperature 

Answer 2

d) The viscosity of a gas decreases with mearease in temperature.

The viscosity of a liquid decreases with increases in temperature. While viscosity of a gas decreases viscosity is pa.s and 1 pa.s = 10 poise.

Hence option (d) is correct option.

Answer 3

The statement that is not correct is "The viscosity of a gas decreases with increase in temperature."

The viscosity of a gas does not have a significant effect on its temperature, and it does not change significantly with temperature. On the other hand, the viscosity of liquids generally decreases with an increase in temperature, which is why many liquids flow more easily when they are hot.