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 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 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.

Multiple choice chemistry phenomena around us comparison between physical and chemical changes introduction to physical and chemical changes change around us

In which type of change, alteration takes place only in specific property of matter but not composition?

  1. Chemical change

  2. Physical change

  3. Both physical and chemical change

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

A physical change affects only the physical properties (like state or shape) of matter, while the chemical composition remains unchanged.

Multiple choice chemistry phenomena around us comparison between physical and chemical changes introduction to physical and chemical changes change around us
When the solid A is added to water, it dissolves with the evolution of heat with the formation of two products B and C. The properties of products B and C are entirely different from those of solid A as well as water. Moreover, products B and C cannot be re-converted into solid A and water. When another solid D is added to water, it dissolves to form a product E which cools down. The product E shows the properties of both, solid D as well as water. Moreover, product E can be converted into solid D and water.
Correct statement(s) is/are:

  1. A chemical change occurs when solid A is dissolved in water

  2. A physical change occurs when solid D is dissolved in water

  3. Metal sodium could behave like solid A

  4. Metal E is a mixture
Reveal answer Fill a bubble to check yourself
A Correct answer