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 botany male & female gametophytes: structure and development pollen grain androecium male gametophyte

An organic substance which can withstand environmental extremes and which cannot be degraded by any enzyme is

  1. Sporopollenin

  2. Lignin

  3. Cuticle

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

An organic substance which can withstand environmental extremes and which cannot be degraded by an enzyme is sporopollenin. It is the substance present in the exine layer of pollen grains. Due to its presence, fossils of pollen grains can be found. 

So, the correct option is 'Option A'.

Multiple choice physics semiconductors band theory of solids, a brief introduction electron energies in solids energy bands

With rise in temperature the resistance of germanium,

  1. increases

  2. decreases

  3. remains the same

  4. first increases then decreases
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

germanium is a semiconductor and as we know  when a semiconductor is heated, electron-hole pair is generated in it which increases its conductivity as the number of charge carriers are increasing.
Now, as conductivity increases resistance decreases because both are opposite of each other.

Multiple choice biology windows of knowledge human tongue organ of taste tongue : the organ of taste

Taste buds detect the substance only when the substance is

  1. Solid

  2. Semisolid

  3. Semiliquid

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

Taste buds are the taste receptors that are present on the surface of tongue in small projections called as papillae. Saliva of mouth dissolves the food and turns it into liquid or small solid molecules suspended in liquid. The liquid food enters the small pores of taste buds and stimulates the taste receptors to release chemicals and generate a nerve impulse. Since only liquid food can enter the small openings or pores of taste buds, taste buds can detect the substances present in the liquid state. 

Since solid, semi-solid and semi-liquid substances can’t enter the small openings of taste buds, they are not being detected. 
Therefore, the correct answer is option D.

Multiple choice geography hydrologic cycle the atmosphere elements of weather and climate :humidity hydrologic cycle and its components elements of weather and climate : temperature

Find the odd one out.

  1. Evaporation

  2. Condensation

  3. Salination

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

Evaporation, condensation, and precipitation are all stages of the water cycle. Salination is the process of increasing salt content in soil or water, which is not a part of the water cycle.

Multiple choice geography hydrologic cycle the atmosphere elements of weather and climate :humidity hydrologic cycle and its components elements of weather and climate : temperature

Sublimation is _________________.

  1. Conversion of solid molecule directly into gaseous state.

  2. Conversion of solid molecule directly into liquid state .

  3. Conversion of liquid molecule directly into solid state.

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The process of conversion of the solid molecules directly into gas is known as sublimation. Generally, Ice converts to water and this water converts to water vapor (gas). So the process of conversion of states of matter is solid converts to liquid and this liquid boils out to give gas. But, the liquid state is devoid in case of sublimation. Conversion of Camphor to gas is an example of sublimation. Sublimation helps to dry substance within getting moist. It is also beneficial in medicines. Water also undergoes sublimation at the triple point.
Multiple choice geography hydrologic cycle the atmosphere elements of weather and climate :humidity hydrologic cycle and its components elements of weather and climate : temperature

Condensation is the phenomenon of

  1. Converting gaseous molecule from gaseous state to liquid state.

  2. Converting gaseous molecule from gaseous state to solid state.

  3. Inter conversion of solid molecule to liquid molecule.

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

The phenomenon by which gaseous molecules convert from gaseous state to liquid state is called condensation. It is the process by which water vapor in the air is changed into liquid water. Condensation is responsible for the formation of clouds. That’s why it is crucial to the water cycle. These clouds produce precipitation which is the primary route for water to return to the Earth’s surface through rain. Condensation is the opposite of evaporation.

Multiple choice geography hydrologic cycle the atmosphere elements of weather and climate :humidity hydrologic cycle and its components elements of weather and climate : temperature

Find the odd one out and give explanation of your choice.

  1. Evaporation

  2. Condensation

  3. Salination

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

Evaporation, condensation, and precipitation are fundamental processes of the water cycle. Salination refers to the accumulation of salts in soil or water, which is distinct from the water cycle.

Multiple choice geography hydrologic cycle the atmosphere elements of weather and climate :humidity hydrologic cycle and its components elements of weather and climate : temperature

Water is required for ______ processes.

  1. Finishing

  2. Manufacturing

  3. Packaging

  4. Both a and b
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In manufacturing processes, water is used to generate electric power, to make steam for processing and cleaning, to cool or control process temperature, to rinse, to dilute food, and to formulate products containing water. 

Multiple choice geography hydrologic cycle the atmosphere elements of weather and climate :humidity hydrologic cycle and its components elements of weather and climate : temperature

What is condensation?

  1. Water vapour in the atmosphere.

  2. The process by which water vapour in the atmosphere changed into liquid water.

  3. Water fall in the solid or liquid state.

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

The process by which water vapour in the atmosphere changed into liquid water is called condensation. As the atmospheric conditions change, we see change in the forms of condensation.

Multiple choice biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

The energy is required in absorption of water by

  1. Active absorption

  2. Passive absorption

  3. Both passive and active absorption

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

Absorption of water takes place by both active and passive absorption.
Water, as per some theory, is absorbed against the concentration gradient. This type of absorption is termed active absorption where the movement is against the concentration gradient and requires energy in the form of ATP.

Most of the plants observe passive absorption, meaning, the movement is without utilization of metabolic energy. 
Thus, the correct answer is option (C). 

Multiple choice physics pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

In crushing can experiment the can gets crushed because of:

  1. dcrease in internal pressure

  2. Increase in internal pressure

  3. increase in atmospheric pressure

  4. decrease in atmospheric pressure
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Crushing can experiment , Take an empty and absolutely clean Mobil oil can and put in it about 0.25 liter of water. Great the can in fire till all the air is expelled out and the steam comes out freely from its mouth.screw the mouth of the can with a lid and immediately remove it away from the fire .pour cold water on the can. It is found that the can gets crushed.the reason is that on pouring cold water, the steam changes into water ,thereby,causing a vacuum inside the can. Thus the tremendous atmospheric pressure,exerts pressure from outside and crushed the can.

Multiple choice chemistry chemical changes electrochemical reactions electrolysis and its applications electrolytic cells and electrolysis

A gas which does not conduct electricity in the liquid state but conducts electricity when dissolved in water is :

  1. $HCl$.
  2. $H _2$.
  3. $SO _2$.
  4. $Cl _2$.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
It is HCl having a unique property which does not conduct electricity when it is in gas phase since the gas phase of HCl is in the form of molecules and not in ionic form, the anhydrous HCl gas does not conduct electricity.
             But HCl solution or Aquous $HCl$ conducts electricity since HCl completely dissociates in solution to form hydronium $H _3O^+$ and $Cl^-$ ions which are getting transported into opposite direction when potential electric junction is created by applying differential voltage, thus migration of these ions in opposite directions to each other allows electricity and thus becomes conductor of electricity.
Multiple choice geography cloud and rain the atmosphere elements of weather and climate :humidity hydrologic cycle elements of weather and climate : temperature

The process of changing of water from the liquid state to the gaseous state is called __________.

  1. Condensation

  2. Evaporation

  3. Sublimation

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

The process of changing of water from the liquid state to the gaseous state is called evaporation. It occurs every day in natural and man-made environments. It occurs most often around the areas which are situated near water bodies. It is the most important process in case of water cycle because the water from water bodies goes into atmosphere through the process of evaporation. The rate of evaporation increases with the increase in the temperature.

Multiple choice chemistry separation of matter sedimentation, decantation and filtration other methods of separation separation methods

 Sublimation is a technique that helps chemists to:

  1. break

  2. purify

  3. melt

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

Sublimation is a technique that helps chemists to purify. During sublimation, upon heating, a solid substance is converted to the gas phase without passing through the liquid phase.  A solid is heated under vacuum. The solid volatilizes and condenses as a purified compound on a cooled surface, a non-volatile residue of impurities is left behind.