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 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).

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

Evaporation is a _____________ process.

  1. Cooling

  2. Heating

  3. Can't tell - it depends on the temperature

  4. Both a and c
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Evaporation is a cooling process because the molecules with the highest kinetic energy escape the liquid phase, leaving behind molecules with lower average kinetic energy, which lowers the temperature of the remaining 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

A glass of water with some pieces of ice in it, after some time, small drops of water forms on the outer surface of the glass. This process is called as

  1. Evaporation

  2. Precipetation

  3. Condensation

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

The water vapor in the air surrounding the cold glass loses energy upon contact with the cold surface and transitions into liquid water droplets. This process is condensation.

Multiple choice bio-chemistry human body and organ system role of blood in transport function of blood blood and lymph body fluid

What fraction of your body is water? 

  1. 1/4

  2. 2/3

  3. 1/2

  4. 1/3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

About 2/3 of the average human body is water, mostly within the cells. The amount of water in the human body ranges from 50-75%. The average adult human body is 50-65% water, averaging around 57-60%. The percentage of water in infants is much higher, typically around 75-78% water, dropping to 65% by one year of age. Thus, option B is correct.

Multiple choice botany plant nutrition experiments on photosynthesis - light importance of light for photosynthesis photosynthesis necessities- experiments various experiments on photosynthesis experiments on photosynthesis - gases

The process in which liquid water changes into gas is called

  1. Precipitation

  2. Condensation

  3. Evaporation

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

Sun derives the water cycle, heats up water in ocean and seas, and then water vapours evaporate to air. As the vapours move upward the cool temperature there causes it to condense into clouds and they fall as precipitate like rain, hailstone etc.

Multiple choice chemistry chemical bond and chemical equation properties of covalent compounds types of bonds and properties covalent bond

Covalent compounds are soluble in :

  1. polar solvents

  2. non-polar solvents

  3. concentrated acids

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

Polar compound are soluble in polar solvents. As covalent compounds are less polar or non-polar, they are soluble in non-polar solvents like ether and ionic compounds are soluble in polar solvents like water $(H _2O)$.

Multiple choice chemistry chemical bond and chemical equation properties of covalent compounds types of bonds and properties covalent bond

Covalent compounds are usually water soluble.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A covalent bond is formed between non metal atoms, which combine together by sharing electrons. covalent compounds have low melting points, do not dissolve in water, and do not conduct an electric current in solution that make them non-polar. 
Thus, Option "B" is correct.

Multiple choice chemistry chemical bond and chemical equation properties of covalent compounds types of bonds and properties covalent bond

Compounds evaporating easily and giving off a smell are?

  1. Ionic compounds

  2. Covalent bonds

  3. Metallic bonds

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

Covalent compounds have negligible forces of attraction and these are gases e.g. $HCl$, sulfur dioxide,carbon dioxide and methane. There are weak forces of attraction and such covalent substances are low boiling temperature liquids such as ethanol so boils rapidly and gives off smell.