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

Which of the following processes involves a chemical change?

  1. Melting of ice

  2. Photosynthesis

  3. Beating of aluminium sheet to make foil

  4. Melting of wax
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$(A)$ Melting of ice is reversible, $\therefore $  physical change also no change in chemical composition.

$(B)$ ${ 6CO } _{ 2 }+12{ H } _{ 2 }O\rightarrow { C } _{ 6 }{ H } _{ 12 }{ O } _{ 6 }+{ O } _{ 2 }+{ H } _{ 2 }O$
       (chemical change)
$(C)$ malleability $-$ turning into this sheet $-$ physical change as no change in chemical composition.
$(D)$ similarly wax melting can be reversed.

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

If pressure is applied to the equilibrium system of solid $ \rightleftharpoons $ liquid, the melting point of the liquid:

  1. will not chabge

  2. may increase or decrease depending upon its nature

  3. will always increase

  4. will always decrease
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  1. If pressure is applied, according to clausices-ceapeyron equation, the melting point will increase for liquids and decrease for water.
    2. Any external changes that try to take it out of equilibrium will came the system to adjust in a way to counter act that change.
Multiple choice physics heat and temperature anomalous expansion of water thermal expansion in solids, liquids and gases thermal expansion

When hot liquid is poured into a thick glass tumbler,it cracks

  1. Glass is good conductor of heat

  2. Glass is poor conductor of heat

  3. Both

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

When hot liquid is poured into a thick glass tumbler,it cracks.the reason is that the glass is a poor conductor of heat.when a hot liquid is poured into a tumbler ,the inner surface of the tumbler becomes hot,while the outer surface remain at room temperature.

Multiple choice physics heat and temperature anomalous expansion of water thermal expansion in solids, liquids and gases thermal expansion

Pouring hot water to open the tightly closed lid is an application of : 

  1. Thermal expansion in liquid

  2. Thermal expansion in solid

  3. Thermal expansion in gas

  4. Thermal expansion in both solid and liquid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When we pour hot water on a tightly closed lid, it expands due to heat gained from hot water. Due to this heat lid expands and becomes loose. This is thermal expansion of solids.

Multiple choice geography the biosphere alternatives for minimising depletion of natural resources components of environment effects and successes of environment conservation

Substances which break into simpler substances in course of time are __________.

  1. Biological substances

  2. Biodegradable substances

  3. Non-biodegradable substances

  4. Pro-magnifying substances
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Biodegradable substances are those substances which are broken down into simpler, harmless substances in nature in due course of time by the biological processes such as micro organisms like certain bacteria.

Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

If an ideal flask containing hot coffee is shaken, the temperature on the coffee will:

  1. decrease

  2. increase

  3. remain same
  4. decrease if temperature is below $4$C and increase if temperature is equal to or more than $4$C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An ideal flask is designed to be thermally insulated, meaning no heat is exchanged with the surroundings. Shaking the coffee adds a negligible amount of mechanical energy, so the temperature remains effectively the same.

Multiple choice physics superposition of waves-2: stationary (standing) waves: vibrations of air columns from moving to stationary stationary (or standing) waves formation of stationary waves

Standing waves can be produced in.

  1. Solid only

  2. Liquid only

  3. Gases only

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

Standing wave produces when two waves of identical frequency interfere with one another while travelling in opposite directions and this coincidence directions and this coincidence is not possible in fluids or gases.

Multiple choice evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

A mixture is made from different substances that are ___________.

  1. not chemically joint

  2. chemically joint

  3. physically joint

  4. not physically joint
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A mixture is made from different substances that are not chemically joined. 


For example powdered iron and powdered sulphur mixed together makes a mixture of iron and sulphur. They can be separated from each other without a chemical reaction.

Multiple choice evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

Everything in the universe is made up of material called as _______.

  1. life

  2. water

  3. matter

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

Everything in this universe is made up of material which scientists have named "matter". 


It can be living or non-living. 

For example, human beings are matter as well as a duster is also a matter.

Hence the correct option is C.

Multiple choice evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

Which of the following is not matter?

  1. Oxygen

  2. Microwaves

  3. Water

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

Matter is something that occupies space and has volume.
Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter. 

It does not have mass and volume. It is neither a solid, liquid or gas. Hence, microwave cannot be considered as matter.
Hence, the correct option is $B$.

Multiple choice evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

Change of state is also called as _____________.

  1. phase change

  2. mass change

  3. volume change

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

Matter can move from one state to another, but can still be the same substance. A change of state, also called a phase change, is a physical change from one state of matter to another, 

for example, from solid to liquid or from liquid to gas.