Chemistry · Science General

States of Matter

2,682 Questions

States of matter questions explore physical changes, evaporation, phase transitions, and the properties of liquids and gases. Topics cover density, cryosurgery, heavy water, and electrolytes. This foundational chemistry topic frequently appears in general science sections of SSC and railway exams.

Phase change mechanismsEvaporation and temperature effectsProperties of liquidsPhysical versus chemical changesElectrolytes and heavy water

States of Matter Questions

Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

Liquids and gases ....................... on heating.

  1. contract

  2. expand

  3. melt

  4. none of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Liquids and gases expand when they are heated. This is because the particles in liquids and gases move faster when they are heated than they do when they are cold. As a result, the particles take up more volume. This is because the gap between particles widens, while the particles themselves stay the same size.

Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

Look at the classification table below. Which of the following sets of headings is correct?

I II III
Oil Snow Wind
Paint Crayon Oxygen

  1. (I) Gas (II) Liquid (III) Solid

  2. (I) Liquid (II) Gas (III) Solid

  3. (I) Liquid (II) Solid (III) Gas

  4. (I) Solid (II) Gas (III) Liquid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Oil and paint exist in the liquid state, crayon and snow are in the solid-state while wind and oxygen exist in the gaseous state. Hence, I - liquid, II - solid and III - gas.

Hence, the correct option is $C$.
Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

Mechanical work is specially important in systems that contains :

  1. gas-liquid

  2. liquid-liquid

  3. solid-solid

  4. amalgam
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mechanical work is important in systems that undergo appreciable change in volume. 


Since solids are incompressible, hence mechanical work is insignificant in solids. 

However, gases and liquids(to some extent) undergo appreciable change in volume and hence, mechanical work becomes important in case of gases and liquids.

Therefore, the option is A.

Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

State having indefinite shape but definite volume is:

  1. solid.

  2. liquid.

  3. gas.

  4. liquid and gas.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Solid has highest inter-molecular force of attraction. Liquids has inter-molecular force of attraction less than solid but greater than Gas. So, it has indefinite shape but definite volume.


Hence, the correct option is $B$.


Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

Diffusion is negligible in case of:

  1. solid.

  2. liquid.

  3. gas.

  4. solid and liquid.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Due to high inter-molecular force of attraction and very small inter-molecular spaces diffusion is negligible in solid.

Particle in solid have lowest kinetic energy so they do not move.


Hence, the correct option is $A$.


Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

Which of the following states of matter has most number of particles per unit area?

  1. Solids

  2. Liquids

  3. Gases

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Solids have most number of particles per unit area. The molecules are very tightly packed and solids have high density.


Hence, the correct option is $A$.


Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

The process in which gas transform into solid is called :

  1. sublimation

  2. condensation

  3. evaporation

  4. deposition

  5. melting
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sublimation- It is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase. 

Condensation- It is the change of the physical state of matter from gas phase into liquid phase.

Evaporation is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance.

Deposition is a thermodynamic process, a phase transition in which gas transforms into solid.

Melting (also known as fusion) is a physical process that results in the phase transition of a substance from a solid to a liquid.

Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

Which of the following statement is true?

  1. The latent heat of vaporization of water is the energy which is used to change the state of water (liquid) to vapor (gas)

  2. The latent heat of fusion of water is the energy which is used to change the state of water (liquid) to vapor (gas)

  3. When an object takes up latent heat the temperature increases drastically

  4. None of above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When liquid changes into gas because of rise in temperature, the heat required changing the state without rising in temperature is called the Latent Heat of vaporization. The latent heat of vaporization of water is the energy which is used to change the state of water (liquid) to vapor (gas).

Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

Which of these is a property of a liquid?

  1. Has a particular shape

  2. Has a particular volume

  3. Doesn't have a fixed shape

  4. Doesn't have a fixed volume
Reveal answer Fill a bubble to check yourself
B,C Correct answer
Explanation

A liquid has a particular volume but it doesn't have a definite shape. Liquid takes the shape of the container in which it is kept.
The inter-molecular forces in case of a liquid are not as strong as in solids and hence a liquid is not held together tightly. Thus, the liquid takes up the shape of the container in which it is kept.


Hence, the correct options are $B$ and $C$

Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

Which of the following sentences are true?

  1. Solid particles have very low kinetic energy

  2. Gas particles have very high kinetic energy

  3. Kinetic energy of liquid is intermediate between solid and gases

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In a solid, the particles are held together by strong intermolecular forces between them and hence there is very little scope of movement for the particles in solid. So, kinetic energy of solid is very low.


In a gas, the particles are held together by very weak intermolecular forces between them and hence there is a very high scope of movement for the particles in gas. So, kinetic energy of gas is very high.

In a liquid, the particles are held together by intermolecular forces which are not as strong as in solid, neither as weak as in gases and hence there is a scope of movement for the particles in liquid which is not as low as solid, neither as high as gas. 

So, kinetic energy of liquid is intermediate between solid and gases.

Hence the correct option is D.

Multiple choice chemistry matter in our surroundings diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

On heating liquids, the intermolecular space between molecules:

  1. increases

  2. decreases

  3. remains same

  4. depends on particles
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

On heating liquids, intermolecular space between molecules increases as the particles gain enough kinetic energy to overcome the force of attraction.