Question

What is the physical state of water at \[250^\circ {\text{C?}}\]
A.Liquid
B.Solid
C.Gaseous
D.None of the above

Answer 1

Hint: The outer visibility or presentation of a matter is known as its physical state. Physical state depends upon the density of the particles present in the solid. Liquid and gases have less density and solids have more density as compared to fluids.

Complete step by step answer:
The outer presentation of the matter or how the matter is visible represents the physical state of that matter. Basically there are three types of physical states: solid, liquid and gas but sometimes some matters are defined with a new physical state known as plasma. Plasma is the most common physical state in the universe. Stars also have a physical state of plasma. The particles which are charged and have a higher kinetic energy shows the plasma as its physical state.
Examples related to plasma state can be that the noble gases such as helium, neon etc. are charged to make glowing signs, the charging results in ionization of noble gases to plasma state.
The other physical states we know very well such as solids, the particles are packed tightly in solids and the particles do not show motion with respect to each other. Liquids and gases come under the category of fluids (the matters which can flow are known as fluids). They are differentiated on the basis of density, in gases the density is very low, the particles are distributed with larger space in them as compared to liquids.
As we all know that the freezing point and boiling point of water are respectively ${\text{0}}^\circ {\text{C and 100}}^\circ {\text{C}}$ . So after ${\text{100}}^\circ {\text{C}}$ the water starts evaporating in the form of vapour and hence at $25{\text{0}}^\circ {\text{C}}$ the water is present in gaseous state.

So, the correct answer is Option C .

Note:
The matters which can flow are known as fluids. Both the gases and liquids come under the category of fluids and plasma also comes under the category of the fluids. They continually deform on applying external force.