Chemistry · 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 chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

A volatile liquid _____________.

  1. vaporizes quickly at room temperature

  2. solidifies quickly at room temperature

  3. liquifies quickly at room temperature

  4. does not vaporize quickly
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A volatile liquid is one that evaporates or vaporizes quickly at room temperature. Volatile liquids have low boiling point. As a result, they evaporate very easily at room temperature.

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

The process by which molecules undergo a spontaneous transition from the liquid phase to the gaseous phase is called as:

  1. boiling

  2. sublimation

  3. evaporation

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

The process by which molecules undergoes a spontaneous transition from the liquid phase to the gaseous phase is called as evaporation. In evaporation due to increase of temperature rate of evaporation also increases.

Condensation is the reverse of evaporation in which water vapor converts into liquid water by decreasing temperature.  

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

 Liquid which evaporates more quickly is ___________.

  1. spirit

  2. water

  3. grease

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

Spirit is a volatile liquid which evaporates fastly than water and oil which have higher boiling point as compare to spirit. Grease is heavy, viscous oily material takes longer time to evaporate. Hence, spirit is the liquid which evaporates fastly. 

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Evaporative cooling is the phenomenon  _____________.

  1. in which molecule of liquid with high kinetic energy evaporates fastly, leaving behind the particle of less kinetic energy

  2. in which molecule of liquid with low kinetic energy evaporates fastly, leaving behind the particle of high kinetic energy

  3. temperature change of the liquids

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Evaporation is the surface phenomenon in which liquid molecules of high kinetic energy evaporates fastly from the surface of the liquid. Due to which the molecules of less kinetic energy remains in the solution and the temperature of the liquid decreases. Hence, it cools down. This phenomenon is known as evaporative cooling.

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

During evaporation of liquid,  ___________.

  1. the temperature of the liquid falls

  2. the temperature of the liquid rises

  3. the temperature of the liquid remains unchanged

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

When liquid gets evaporated from the surface of liquid they convert from liquid state to gaseous state by absorbing energy from the liquid and due to it temperature of the liquid decreases.

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Which of the following statements is/are wrong?

  1. At room temperature, evaporation of water is rapid as compared to ethanol

  2. Water is more viscous as compared to ethanol

  3. Liquid drops are spherical in shape

  4. Clothes are easily dried on dry days as compared to humid days
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

Clothes are easily dried on dry days as compared to humid days because evaporation is inversely proportional to humidity.

Ethanol evaporates faster because the intermolecular forces are strong in water due to hydrogen bonding.
Water is more viscous compared to ethanol due to its cohesivity adhesivity.

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Identify the substance that evaporates at room temperature.

  1. Water

  2. Oil

  3. Kerosene

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

Kerosene evaporates at room temperature (liquid to gas) as it is volatile and have a low vapour pressure.


Water and oil need heat for evaporation (liquid to gas). 

Hence, option C is correct.

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Which one of the following statements related to the process of evaporation is incorrect?

  1. Evaporation occurs at any temperature.

  2. Evaporation takes place within the liquid not on the surface.

  3. Temperature may change during evaporation.

  4. No bubbles are formed in the liquid during evaporation.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Evaporation is a type of vaporization which occurs on the surface of the liquid. The evaporation process can occur at a temperature below the boiling point. So by evaporation, only the liquid molecules on the surface get converted to the water vapour.


Hence, the correct option is $\text{B}$

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Which of the following is a surface phenomenon?

  1. Boiling

  2. Evaporation

  3. Dilution

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
$Boiling$ is a bulk phenomenon because all molecules get energy on heating.

$Evaporation$ is a surface phenomenon as the molecules of the surface gets sufficient energy to overcome the force of attraction which will help in converting to the vapor phase.

$Dilution$ is also a bulk phenomenon as the volume of solution increases in the whole solution.

So, the correct answer is (B).
Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Identify the factors which cause evaporation?

  1. High pressure on water surface

  2. Specific heat

  3. Latent energy

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

Evaporation is the surface phenomenon in which if their high-pressure present on the surface of the liquid, it reduces the rate of evaporation. 


Storms are examples of high-pressure systems that slow down evaporation.

Therefore, the option is A.

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Evaporation is a _______ phenomenon.

  1. surface

  2. bulk

  3. solid

  4. none
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Surface phenomenon is a process in which only the surface of the any substance or object is involved in the process. In Evaporation only surface of the liquid involves in the process, its bulk remain unaffected by evaporation. Hence, it is a surface phenomenon. 

Multiple choice chemistry matter in our surroundings atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Which of the following plays an important part while drinking a liquid with a straw?

  1. Humidity

  2. Temperature

  3. Atmospheric pressure

  4. Composition of air
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When you suck on a straw, stuck into liquid it lowers the pressure in the straw. That makes atmospheric pressure higher than the pressure in the straw which force the liquid to go up into the straw and into your mouth. So, atmospheric pressure plays important role while drinking a liquid with a straw.

Multiple choice geography precipitation elements of weather and climate :rainfall and air pressure forms of precipitation moisture in atmosphere

The glass tube of thermometer is filled with _____.

  1. Alcohol

  2. Mercury

  3. Water

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

The glass tube of thermometer is filled with mercury. It is a reflective liquid. It is bright and opaque, so it’s easy to see movement of mercury inside the capillary tube and to read accurately. Mercury does not even wet the glass. So, if temperature is falling then you do not get inaccurate readings. It is also good conductor of heat. So, it responds quickly to change in temperature.

Multiple choice geography precipitation elements of weather and climate :rainfall and air pressure forms of precipitation moisture in atmosphere

In modern thermometer, mercury is used as it is a __________ liquid.

  1. Viscous

  2. Heavy

  3. Reflective

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In modern thermometer, mercury is used as it is a reflective liquid. It is bright and opaque, so it’s easy to see movement of mercury inside the capillary tube and to read accurately. Even mercury does not wet the glass. So, if temperature is falling then you do not get inaccurate readings. It is also good conductor of heat. So, it reacts quickly to change in temperature.

Multiple choice geography precipitation elements of weather and climate :rainfall and air pressure forms of precipitation moisture in atmosphere

The two reference points that are marked on the thermometer are _______________.

  1. Top and Bottom points

  2. Freezing and Boiling points

  3. High and Low points

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

Thermometer is a device which is used to measure temperature. There are two reference points marked on a thermometer. One reference point represents freezing point of water. Freezing point of the water is the temperature at which water starts converting into ice. As per Celsius scale, zero degree is the freezing point of the water. Other reference point represents boiling point of water. Boiling point is the temperature at which water starts converting into vapours. As per Celsius scale, 100 degree is the boiling point of the water.