Which of the following statements about viscosity are true:
I.Viscosity is liquid's resistance to flow.
II.Viscosity decreases with a decrease in temperature.
III.Viscosity is not related to the forces between molecules in a liquid.
IV.Viscous liquids have low rate flows.
A)I and IV
B)I and III
C)I and II
D)II and IV
E)III and IV

Question

Which of the following statements about viscosity are true:
I.Viscosity is liquid's resistance to flow.
II.Viscosity decreases with a decrease in temperature.
III.Viscosity is not related to the forces between molecules in a liquid.
IV.Viscous liquids have low rate flows.
A)I and IV 
B)I and III 
C)I and II 
D)II and IV 
E)III and IV

Quizplus · Accepted Answer

Statement I is true as viscosity is defined as a liquid's resistance to flow. Statement IV is also true as viscous liquids tend to have low rates of flow.

Statement II is false as viscosity usually increases with a decrease in temperature. The molecules in a liquid move slower at lower temperatures, leading to more internal friction and higher viscosity.

Statement III is false as viscosity is related to intermolecular forces between molecules in a liquid. Stronger intermolecular forces lead to higher viscosity, and weaker forces lead to lower viscosity.

Which of the Following Statements About Viscosity Are True