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

In a gas-liquid mass transfer operation, the rate of mass transfer is influenced by:

  1. Gas flow rate

  2. Liquid flow rate

  3. Temperature

  4. Surface area
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

The rate of mass transfer in a gas-liquid mass transfer operation is influenced by gas flow rate, liquid flow rate, temperature, and surface area.

Multiple choice

Which of the following is not a common adulterant found in fruit juices?

  1. Water

  2. Sugar

  3. Artificial colors

  4. Pesticides
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pesticides are not common adulterants found in fruit juices, as they are typically removed during processing.

Multiple choice

What is the term for the process by which water vapor in the atmosphere condenses into liquid water or ice?

  1. Evaporation

  2. Condensation

  3. Precipitation

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

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

Multiple choice

What is the term used to describe the process in which a substance changes from a liquid to a gas?

  1. Evaporation

  2. Condensation

  3. Freezing

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

Evaporation is the process in which a substance changes from a liquid to a gas.

Multiple choice

What is the term used to describe the process in which a substance changes from a gas to a liquid?

  1. Evaporation

  2. Condensation

  3. Freezing

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

Condensation is the process in which a substance changes from a gas to a liquid.

Multiple choice

What is the term used to describe the process in which a substance changes from a liquid to a solid?

  1. Evaporation

  2. Condensation

  3. Freezing

  4. Melting
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Freezing is the process in which a substance changes from a liquid to a solid.

Multiple choice

What is the term used to describe the process in which a substance changes from a solid to a liquid?

  1. Evaporation

  2. Condensation

  3. Freezing

  4. Melting
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Melting is the process in which a substance changes from a solid to a liquid.

Multiple choice

What is the term used to describe the process in which a substance changes from a solid directly to a gas?

  1. Sublimation

  2. Deposition

  3. Vaporization

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

Sublimation is the process in which a substance changes from a solid directly to a gas.

Multiple choice

What is the term used to describe the process in which a substance changes from a gas directly to a solid?

  1. Sublimation

  2. Deposition

  3. Vaporization

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

Deposition is the process in which a substance changes from a gas directly to a solid.

Multiple choice

What is the term used to describe the process in which a substance changes from a liquid to a gas and then directly to a solid?

  1. Deposition

  2. Condensation

  3. Sublimation

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

Deposition is the process in which a substance changes from a liquid to a gas and then directly to a solid.

Multiple choice

What is the term used to describe the process in which a substance changes from a solid to a gas and then directly to a liquid?

  1. Sublimation

  2. Deposition

  3. Vaporization

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

Sublimation is the process in which a substance changes from a solid to a gas and then directly to a liquid.

Multiple choice

What is an emulsion and how does it relate to salad dressings?

  1. A mixture of two immiscible liquids

  2. A mixture of two miscible liquids

  3. A mixture of a liquid and a solid

  4. A mixture of a liquid and a gas
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An emulsion is a mixture of two immiscible liquids, such as oil and vinegar, that are stabilized by an emulsifier. In salad dressings, the emulsifier is typically a protein or a polysaccharide, which helps to keep the oil and vinegar from separating.

Multiple choice

What is the term used to describe the temperature at which a polymer transitions from a glassy state to a rubbery state?

  1. Melting point

  2. Glass transition temperature

  3. Boiling point

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

Glass transition temperature (Tg) is the temperature at which a polymer transitions from a glassy state to a rubbery state.

Multiple choice

What is the primary component of most paints?

  1. Water

  2. Oil

  3. Pigment

  4. Binder
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The binder is the component of paint that holds the pigment particles together and allows the paint to adhere to the surface being painted.

Multiple choice

Which of the following is an example of a green solvent?

  1. Water.

  2. Dichloromethane.

  3. Benzene.

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

Water is a green solvent due to its non-toxicity, abundance, and low environmental impact.