Question

The state of thermodynamic system is represented by
(a) Pressure only
(b) Volume only
(c) Pressure, volume and temperature
(d) Number of moles

Answer 1

Hint: The only things that matter for a material are its properties related to how much capacity it has for bearing the temperature around it. How much pressure should be given to the material and how much space it takes in a given volume.

Complete answer:

Pressure: Pressure is a form of energy which is applied to any surface of any material per unit its area.
Volume: It is the space of a surface filled by some material. If that material fills it inside the surface then we say that the material has taken all volume of the surface.

Temperature: We may define temperature by how cold or hot air is present in our surrounding. If we need to find out the temperature of a human then we will use a thermometer for it.

Number of moles: Its number defines the total amount that is present in a substance.

Thermodynamic system: For understanding the thermodynamic system we will consider an enclosure in the form of cuboid and consider its parameters involved in it. When we notice it carefully then, we will find the most important factors that are used in defining the state of thermodynamics are pressure, temperature and volume only. We change temperature for measuring the property of the material, so that we get to know how much the material can bear its power in the atmosphere. Similarly, by applying more pressure or less we are able to find that if the matter is solid, liquid or gaseous state. If we notice the volume of any substance then we will find that the volume of the material in which the liquid is kept has better volume capacity than the solid ones.

So, the correct answer is “Option C”.

Note:
The number of moles does not matter in a state of thermodynamics because it is a mass property. If we need to find the state of any particle or material then we will find its temperature as a first point. Because for example the temperature of ice is nearer to 0 degree Celsius while for hot water it is up to 100 degrees. Also, if a pressure is applied to a liquid then some rare liquids get changed into solids. Also, if the volume is up to the capacity of 6 cubic length of a cube so, this means that the same cube can take any material at most this volume only.