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 marine refrigeration system, the evaporator is responsible for:

  1. Cooling the Refrigerant

  2. Condensing the Refrigerant

  3. Expanding the Refrigerant

  4. Compressing the Refrigerant
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The evaporator in a marine refrigeration system absorbs heat from the surrounding environment, causing the refrigerant to evaporate and cool down.

Multiple choice

In a marine steam condenser, the steam is condensed into water by:

  1. Cooling Water

  2. Air

  3. Refrigerant

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

In a marine steam condenser, cooling water is used to condense the steam into water.

Multiple choice

Which of the following is the chemical formula for water?

  1. H2O

  2. CO2

  3. NaCl

  4. CH4
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water is a compound composed of two hydrogen atoms and one oxygen atom, represented by the chemical formula H2O.

Multiple choice

What is the term used to describe the process by which water vapor in the atmosphere condenses into liquid water?

  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 vapor in the atmosphere condenses into liquid water. This process occurs when water vapor cools and loses energy.

Multiple choice

What is the term used to describe a colloidal system in which the dispersed phase is a solid and the dispersion medium is a liquid?

  1. Sol

  2. Gel

  3. Emulsion

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

A sol is a colloidal system in which the dispersed phase is a solid and the dispersion medium is a liquid.

Multiple choice

What is the term used to describe a colloidal system in which the dispersed phase is a liquid and the dispersion medium is a gas?

  1. Sol

  2. Gel

  3. Emulsion

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

An aerosol is a colloidal system in which the dispersed phase is a liquid and the dispersion medium is a gas.

Multiple choice

What is the term used to describe a colloidal system in which the dispersed phase is a gas and the dispersion medium is a liquid?

  1. Sol

  2. Gel

  3. Emulsion

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

A foam is a colloidal system in which the dispersed phase is a gas and the dispersion medium is a liquid.

Multiple choice

What is the term used to describe a colloidal system in which the dispersed phase and the dispersion medium are both liquids?

  1. Sol

  2. Gel

  3. Emulsion

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

An emulsion is a colloidal system in which the dispersed phase and the dispersion medium are both liquids.

Multiple choice

What is the term used to describe a colloidal system in which the dispersed phase and the dispersion medium are both solids?

  1. Sol

  2. Gel

  3. Emulsion

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

A gel is a colloidal system in which the dispersed phase and the dispersion medium are both solids.

Multiple choice

What is the chemical formula for water?

  1. H2O

  2. CO2

  3. NaCl

  4. CH4
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The chemical formula for water is H2O, which means it is composed of two hydrogen atoms and one oxygen atom.

Multiple choice

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

  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 vapor in the atmosphere condenses into liquid water.

Multiple choice

What is the term for the process by which water vapor in the air condenses into liquid water droplets?

  1. Evaporation

  2. Condensation

  3. Sublimation

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

Condensation is the process by which water vapor in the air condenses into liquid water droplets, forming clouds and precipitation.

Multiple choice

What is the term for the process by which water vapor in the air changes directly into ice crystals without passing through the liquid phase?

  1. Evaporation

  2. Condensation

  3. Sublimation

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

Sublimation is the process by which water vapor in the air changes directly into ice crystals without passing through the liquid phase, often occurring in cold, dry environments.

Multiple choice

What is the term for the process by which water vapor in the air changes directly from ice crystals into water vapor without passing through the liquid phase?

  1. Evaporation

  2. Condensation

  3. Sublimation

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

Deposition is the process by which water vapor in the air changes directly from ice crystals into water vapor without passing through the liquid phase, often occurring in cold, dry environments.

Multiple choice

What is the term for the process by which water vapor in the air is converted into liquid water droplets?

  1. Evaporation

  2. Condensation

  3. Sublimation

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

Condensation is the process by which water vapor in the air is converted into liquid water droplets, forming clouds and precipitation.