Question

Fluid is a substance which offer no resistance of change of-
(A) Pressure
(B) Flow
(C) Shape
(D) Volume

Answer 1

Hint
Process the options while thinking about the properties of fluids. Like, think about what is Bulk modulus and Viscosity, these properties define a fluid and their basic definitions will help you find the correct option.

Complete step by step answer
As we told in the hint, we’ll approach the solution to this problem using what Bulk Modulus and Viscosity mean, also you can easily reach at the current option while witnessing what happens when you pour water from a bottle into a glass to drink.
Important properties of any fluid-
Bulk Modulus: Bulk Modulus can be defined as the resistance offered by a fluid while we try to change its volume or pressure. The existence of this property easily discards the option (A) and option (D), because this property establishes the fact that fluids show resistance to change in pressure and volume.
Viscosity: It can be defined as the phenomenon of fluid offering resistance to flow provided. A fluid typically offers friction type resistance between multiple layers of the fluid. The existence of this property completely discards the option (B).
As for option (C), whenever you pour water from a water bottle to a glass to drink, you must have witnessed the shape of water changing from that of the bottle to that of the glass. Same goes for other fluids, they accept the shape of the container and show no resistance in doing so.
Hence, the option (C) is the correct option.

Note
Many students think that fluids show no resistance of change in volume because they take the volume and shape of the container, but it must be noted that fluids are not compressible, i.e. you cannot decrease their volume by putting extra pressure on them.