Chemistry ยท Science General

States of Matter

2,382 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

What is the process by which water vapor in the atmosphere condenses into liquid water droplets or ice crystals called?

  1. Evaporation

  2. Condensation

  3. Precipitation

  4. Sublimation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Condensation is the process by which water vapor in the atmosphere changes from a gas to a liquid or solid.

Multiple choice

What is the term used to describe the process by which water vapor in the air changes from a gas to a liquid or solid?

  1. Evaporation

  2. Condensation

  3. Precipitation

  4. Sublimation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Condensation is the process by which water vapor in the air changes from a gas to a liquid or solid.

Multiple choice

What is the term used to describe the process by which water changes from a liquid to a gas?

  1. Evaporation

  2. Condensation

  3. Precipitation

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

Evaporation is the process by which water changes from a liquid to a gas.

Multiple choice

What is the term used to describe the change of a substance from a solid to a liquid?

  1. Melting

  2. Freezing

  3. Evaporation

  4. Condensation

  5. Sublimation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Melting is the process by which a solid substance changes to a liquid state.

Multiple choice

What is the term used to describe the change of a substance from a liquid to a gas?

  1. Evaporation

  2. Condensation

  3. Freezing

  4. Melting

  5. Sublimation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Evaporation is the process by which a liquid substance changes to a gaseous state.

Multiple choice

What is the term used to describe the change of a substance from a gas to a liquid?

  1. Condensation

  2. Evaporation

  3. Freezing

  4. Melting

  5. Sublimation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Condensation is the process by which a gas changes to a liquid state.

Multiple choice

What is the term used to describe the change of a substance from a solid directly to a gas?

  1. Evaporation

  2. Condensation

  3. Freezing

  4. Melting

  5. Sublimation
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Sublimation is the process by which a solid substance changes directly to a gaseous state without passing through the liquid state.

Multiple choice

What is the term used to describe the change of a substance from a gas directly to a solid?

  1. Deposition

  2. Evaporation

  3. Condensation

  4. Freezing

  5. Melting
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Deposition is the process by which a gas changes directly to a solid state without passing through the liquid state.

Multiple choice

Which of the following is NOT a fundamental property of matter?

  1. Mass

  2. Volume

  3. Density

  4. Temperature

  5. Solubility
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Solubility is not a fundamental property of matter but rather a measure of the ability of a substance to dissolve in another substance.

Multiple choice

What is the term used to describe the change of a substance from a liquid directly to a solid?

  1. Freezing

  2. Melting

  3. Evaporation

  4. Condensation

  5. Sublimation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Freezing is the process by which a liquid substance changes to a solid state.

Multiple choice

What is the effect of increasing the temperature of the cold reservoir on the Carnot efficiency?

  1. The Carnot efficiency increases

  2. The Carnot efficiency decreases

  3. The Carnot efficiency remains the same

  4. The Carnot efficiency becomes negative
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Increasing the temperature of the cold reservoir decreases the Carnot efficiency.

Multiple choice

What is the term used to describe the process by which a comet's ice turns directly into gas?

  1. Sublimation

  2. Condensation

  3. Evaporation

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

Sublimation is the process by which a solid (ice) directly transforms into a gas without passing through the liquid phase.

Multiple choice

Which of the following is an example of a reversible process?

  1. Melting of ice

  2. Boiling of water

  3. Expansion of a gas in a vacuum
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Expansion of a gas in a vacuum is an example of a reversible process because it can be reversed by compressing the gas.

Multiple choice

Which of the following is an example of an irreversible process?

  1. Melting of ice

  2. Boiling of water

  3. Expansion of a gas in a vacuum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Melting of ice is an example of an irreversible process because it cannot be reversed by freezing the water.

Multiple choice

What is the significance of the triple point of a substance in phase diagrams?

  1. It represents the temperature and pressure at which the solid, liquid, and gas phases coexist in equilibrium

  2. It represents the temperature and pressure at which the substance undergoes a phase transition

  3. It represents the temperature and pressure at which the substance reaches its maximum density
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The triple point of a substance is the temperature and pressure at which the solid, liquid, and gas phases coexist in equilibrium.