Chemistry ยท 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

What is the term used to describe the transfer of mass from one phase to another?

  1. Diffusion

  2. Convection

  3. Adsorption

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

Diffusion is the term used to describe the transfer of mass from one phase to another due to the random motion of molecules.

Multiple choice

Which of the following is not a type of forest fire retardant?

  1. Water

  2. Foam

  3. Gel

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

Water is not a type of forest fire retardant. It is used to extinguish fires, but it does not prevent them from spreading.

Multiple choice

What percentage of the human body is composed of water?

  1. 50-60%

  2. 60-70%

  3. 70-80%

  4. 80-90%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The human body is composed of approximately 60-70% water, making it the most abundant nutrient in the body.

Multiple choice

Which of the following is NOT a common type of engine coolant?

  1. Water

  2. Antifreeze

  3. Glycol

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

Brake fluid is not a type of engine coolant. Water, antifreeze, and glycol are all common components of engine coolant.

Multiple choice

Which of the following is a good source of hydration for swimmers?

  1. Water

  2. Sports drinks

  3. Soda

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

Water is the best source of hydration for swimmers, as it is easily absorbed and does not contain any added sugar or calories.

Multiple choice

What is the primary component of a comet's nucleus?

  1. Rock and Metal

  2. Ice and Dust

  3. Gas and Plasma

  4. Water and Carbon Dioxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A comet's nucleus is predominantly composed of ice, such as water ice, carbon monoxide ice, and methane ice, mixed with dust particles.

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.