Question

A high viscosity index indicates relatively ____________ changes in viscosity of the oil with the temperature.

b) smaller
c) constant
a) larger
d) none of the mentioned​

Answer 1

Answer:

c) constant

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Answer 2

Answer:

A high viscosity index indicates relatively smaller changes in viscosity of the oil with temperature.

Explanation:

The viscosity of a fluid is defined as the resistance of a fluid that resists the motion of the fluid.

Viscosity in fluid arises due to the presence of relative motion in adjacent layers of fluid.

The viscosity index of the fluid is inversely proportional to the viscosity of the fluid i.e. higher the viscosity index smaller the change in viscosity of the fluid and the lower the viscosity index larger the change in viscosity of the fluid.

Therefore, the correct option is (b).