The viscosity of liquids decreases rapidly with an increase in temperature , and the viscosity of gases increases with an increase in temperature. Thus, upon heating, liquids flow more easily, whereas gases flow more sluggishly.
What is the relation of viscosity with temperature define with an example?
The gas viscosity will increase with temperature. According to the kinetic theory of gases, viscosity should be proportional to the square root of the absolute temperature , in practice, it increases more rapidly.
What is viscosity and its relationship with temperature?
The viscosity of liquids decreases rapidly with an increase in temperature , and the viscosity of gases increases with an increase in temperature. Thus, upon heating, liquids flow more easily, whereas gases flow more sluggishly.
What is the relation between viscosity and temperature Mcq?
Explanation: The viscosity of an oil decreases with an increase of the temperature .
Why does viscosity increase when temperature decreases?
Viscosity generally increases as the temperature decreases . The viscosity of a liquid is related to the ease with which the molecules can move with respect to one another. Thus the viscosity of a liquid depends on the: ... the kinetic energy of the molecules, which depend on the temperature.
What is the difference between temperature and viscosity?
Viscosity depends strongly on temperature. In liquids it usually decreases with increasing temperature , whereas, in most gases, viscosity increases with increasing temperature.
What is the relationship between viscosity and pressure?
Viscosity is normally independent of pressure , but liquids under extreme pressure often experience an increase in viscosity. Since liquids are normally incompressible, an increase in pressure doesn’t really bring the molecules significantly closer together.
What are the factors that affects viscosity?
Viscosity is influenced by the composition of the crude oil, the temperature, dissolved gas content, and the pressure . As temperature increases, the viscosity will decrease. As a result, viscosity measurements are always reported with the temperature at which the measurement is made.
What is unit of viscosity?
Units. The SI unit of dynamic viscosity is the newton-second per square meter (N . · s/m 2 ) , also frequently expressed in the equivalent forms pascal-second (Pa.
Does water viscosity change with temperature?
The viscosity is lower. As you can see, it decreases smoothly as temperature increases . Below the freezing point, the viscosity is harder to define (although large masses of ice do flow), but the curve is discontinuous and it “jumps up” to some higher value.
What happens when viscosity increases?
Viscosity is a measure of an oil’s resistance to flow. It decreases (thins) with increasing temperature and increases (or thickens) with decreased temperature . ... A general increase in viscosity at higher temperatures, which results in lower oil consumption and less wear.
What is unit of viscosity Mcq?
kg-sec/meter .
What is the SI unit of viscosity Mcq?
The SI unit of viscosity is poiseiulle (Pl) . Its other units are Nsm-2 or Pa s.
How does temperature affect viscosity and flow rate?
In general, liquids tend to get “thinner” when their temperature increases. For example, honey and oil tend to flow better at higher temperatures. Therefore, increasing temperature decreases viscosity .
What is the effect of temperature and pressure on viscosity?
Explanation: As the pressure increases the intermolecular distance decreases ; consequently, the intermolecular force increases. As a result, the relative velocity between two adjacent layers decreases, hence the coefficient of viscosity increases. For ideal gases, viscosity depends only on temperature.
How does temperature affect viscosity experiment?
The viscosity of each liquid tested was found to be dependent on the temperature of the liquid. As the temperature of the liquid rises, my experiment showed that the viscosity of the liquid goes down . As the temperature of the liquid goes down, the viscosity of the liquid goes up.
