Question

A substance which flows from one point to another point is called fluid.
A. True
B. False

Answer 1

Hint: We know that, generally, the objects whose particles are farther away from each other, tend to have no definite shape. We will try to solve this question by speculating on the movement of particles in all the states of matter.

Complete answer:
Solids: A solid is one of the states of matter that maintains a fixed volume and shape. The particles of a solid fit closely together. The forces acting between these particles are so strong in nature that they cannot move freely. Thus, they only vibrate.

Liquids: Liquids have a fixed volume, but their shapes would mould to the shape of the container they are being held in. Even though the liquid’s shape is determined by its container, it has a free surface which is not controlled by the container. The particles are held together closely, but they are not as close as in solids. So, they are still able to move around, which causes the liquid to flow.

Gases: In gases, their particles keep moving around and they are farther apart from each other, usually farther apart than the diameter of the particles themselves. The gas behaves like a liquid. That is, its particles are moving but they are still attracted to each other. Thus, they still flow.Thus, liquids and gases flow from one point to another and are called fluids

Therefore, We can say that Liquids and Gases are fluids and they flow from one point to another point. So, the given statement is True. And Option (A) is the correct answer.

Note: A fluid is a substance that continuously deforms (or flows) under an applied shear stress. There is one other state of matter which exhibits the property of fluids. That state is called plasma, but it is not in our syllabus. We will be learning about it in higher levels.