Question

Increasing temperature of a liquid causes-
 A.Decrease in its viscosity
 B.Increase in its viscosity
 C.No effect on its viscosity
 D.Decrease followed by increase in its viscosity

Answer 1

Hint: We have to know that, the consistency of a liquid is a proportion of its protection from miss happening at a given rate. For fluids, it relates to the casual idea of thickness. For instance, syrup has a higher consistency than water.

Complete answer:
Consistency can be conceptualized as measuring the inner frictional power that emerges between contiguous layers of liquid that are in relative movement.
We need to think about the thickness for a fluid, and tell about how the factors expressed make changes in the consistency of fluid. Thickness, fundamentally relies upon the intermolecular powers of fascination, more is the intermolecular powers higher is the consistency and the other way around. Presently the impact of temperature has an opposite connection with the consistency as when there is an increment in the temperature the normal motor energy of particles tends to build this, outcomes in quicker moving atoms and a diminishing in the intermolecular powers and a reduction in the thickness of a fluid.
Hence increasing temperature of a liquid causes increase in its viscosity.

Therefore, the correct option is (A) decrease in velocity.

Note:
We need to remember that the reverse connection of temperature with the thickness of fluids the temperature has an immediate connection with the consistency of gases similarly as with the ascent in temperature the thickness of the gas atom increments and there is one more factor on which, the consistency if a fluid depends and that is state of the particle.