Chemistry · 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 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 physics save energy types of sources of energy renewable and non-renewable resources renewable and non-renewable sources of energy

As steam expands in turbine-

  1. its pressure increases

  2. its specific volume increases

  3. its boiling point increases

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

 Specific volume is defined as the number of cubic meters occupied by one kilogram of a particular substance. When steam expands its volume increases hence its specific volume increases.

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.

Multiple choice chemistry nature of matter heterogenous mixture - colloidal solution and its properties suspensions and colloids mixtures

Smoke is an example of ?

  1. gas dispersed in liquid.

  2. gas dispersed in solid.

  3. solid dispersed in gas.

  4. solid dispersed in liquid.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Smoke is a collection of small and tiny unburned particles. It actually contains more of fumes and chemicals. The smoke is visible to us in form of ash and carbon. It is kind of solid particle present or dispersed in the gas.

Multiple choice chemistry nature of matter heterogenous mixture - colloidal solution and its properties suspensions and colloids mixtures

Particles having size between 1 and 1000 nm dispersed in a medium is called a:

  1. colloid

  2. mixture

  3. suspension

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

A homogeneous looking heterogeneous mixture in which particles having a size between 1 and 1000 nm are dispersed in a continuous medium is called a colloid. Colloids are commonly called sols.


Hence. the correct answer is option $A$.

Multiple choice chemistry nature of matter heterogenous mixture - colloidal solution and its properties suspensions and colloids mixtures

The mixture in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance is called _______.

  1. colloidal solution

  2. saturated solution

  3. unsaturated solution

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

A colloid, in chemistry, is a mixture in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance.
Examples of colloid are paint, milk, fog etc.