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 phenomena around us changes and its classification types of changes classification of changes

Melting of wax is

  1. Reversible change

  2. Irreversible change

  3. Both A,B

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

In melting of wax, only the physical state of the wax changes from solid to liquid. Solid wax can be obtained from molten wax. Molten wax can be again converted to solid wax. This is an example of physical and reversible change. Hence, option A is correct.

Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

There are two samples $A$ and $B$. $A$ is Methanol and $B$ is Ethanol. Both are heated both at the same rate in closed container separately. Which one is correct about the above test?

  1. At $60^0$C, container $A$ and $B$ both have liquids in them
  2. At $80^0$C, container $A$ and $B$ both have vapours in them
  3. At $70^0$C, container $B$ has liquid and $A$ has vapours

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Methanol has a boiling point of $64.7^0$C whereas ethanol has a boiling point of $78.24^0$C. So, all the statements are correct.

Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

Identify the correct set representing properties of Methanol.

  1. Colourless, volatile, poisonous, miscible

  2. Colourless, volatile, non-poisonous, miscible

  3. Colourless, volatile, poisonous, immiscible

  4. Colourless, non-volatile, poisonous, miscible
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Methanol is a light, volatile, colorless, miscible, flammable liquid with a distinctive odor very similar to that of ethanol (drinking alcohol).

Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

Which of the following does NOT involve application of Methanol?

  1. As a solvent

  2. As an anti-freeze in pipelines

  3. In consumable liquor

  4. In Windshield washer fluid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Methanol is toxic in nature and very unfit for drinking purposes.Its consumption can lead to early blindness and further causing death.

Multiple choice evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

Water, ice and steam are all:

  1. elements

  2. mixtures

  3. compounds

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

Compounds can exist in all three states(solid, liquid, gas) provided that they can be heated/cooled enough(to their respective boiling/melting points). Thus water, ice, and steam all are compounds of hydrogen and oxygen.

Multiple choice evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

Levelling effect is mimimum in

  1. Water

  2. DMSO

  3. Acetic acid

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

The levelling effect refers to the inability of a solvent to distinguish between the strengths of strong acids or bases. Water is a leveling solvent for strong acids; however, the question asks where it is minimum. In non-leveling or differentiating solvents, the effect is minimized.

Multiple choice evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

Which property of water is used while washing clothes?

  1. odour

  2. colour

  3. solubility

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

The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules is called surface tension. while washing clothes, detergents reduce the surface tension of the water molecule which causes the formation of foam and cleaning of clothes. 


Option D is correct. 

Multiple choice evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

Which of the following does not contain impurities?

  1. Rain water

  2. Distilled water

  3. Both A and B

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

Rain water and distilled water does not contain impurities.

Distilled water is water that has had many of its impurities removed through distillation. Distillation involves boiling the water and then condensing the steam into a clean container.

 Rain is liquid water in the form of droplets that have condensed from atmospheric water vapor and then precipitated, that it become heavy enough to fall under gravity. Rain i
s a major component of the water cycle and is responsible for depositing most of the fresh water on the earth. It does not contain any impurities. 

Multiple choice physics heat - measurement sources of heat introduction to heat measuring temperature

Beaker A contains hot water. Beaker B contains cold water. Beaker C contains a mixture of hot and cold water. If initially your hand is put into a beaker containing ice, then putting your hand in which of the beakers A, B or C will give a sensation of warmth?  

  1. A

  2. B

  3. C

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

After touching ice, the hand's temperature drops. Any water warmer than the ice will feel warm to the hand. Since A, B, and C are at various temperatures (hot, cold, mixture), all will feel warmer than the ice-chilled hand.

Multiple choice biology water a precious resource water cycle earth's energy budget bio-geo chemical cycles in nature

The process by which water change into water vapour is called as

  1. Transpiration

  2. Evaporation

  3. Condensation

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

Evaporation is the phase transition where liquid water gains enough energy to become water vapor. Transpiration is a specific biological form of evaporation from plants, while condensation is the reverse process.

Multiple choice biology water a precious resource water cycle earth's energy budget bio-geo chemical cycles in nature solar energy and its applications

Which of the following process in the water cycle takes place due to rapid cooling of air?

  1. Condensation

  2. Evaporation

  3. Precipitation

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

Condensation occurs when water vapor cools down and loses energy, transitioning back into liquid droplets. Rapid cooling of air reduces its capacity to hold water vapor, forcing it to condense.

Multiple choice biology water a precious resource water cycle earth's energy budget bio-geo chemical cycles in nature solar energy and its applications

When water changes from a liquid to a vapor, we call this process:

  1. Freezing

  2. Condensation

  3. Sublimation

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

The transition from liquid water to water vapor is defined as evaporation. Sublimation is the transition from solid to gas, while condensation is gas to liquid.

Multiple choice biology water a precious resource water cycle earth's energy budget bio-geo chemical cycles in nature solar energy and its applications

The processes of condensation and freezing:

  1. Both release sensible heat into the environment

  2. Both absorb sensible heat from the environment

  3. Do not affect the temperature of their surroundings

  4. Do not involve energy transport
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Both condensation and freezing are exothermic processes. They release latent heat into the surrounding environment as water changes from a higher energy state (vapor/liquid) to a lower energy state (liquid/solid).