Everything around us—whether solid, liquid, or gas—is made up of matter. Matter exists in different forms and can change from one form to another through physical processes. From the water we drink to the air we breathe, understanding matter helps us make sense of the world. Materials, their properties, and the concept of density play important roles in daily life and science.
This question paper tests your knowledge of these exciting concepts in a fun and structured way.
Total Questions: 50 | Each carries 1 mark | MCQ Format
-
Which of the following is not a state of matter?
a) Solid
b) Gas
c) Liquid
d) Energy -
Which state of matter has a definite shape and volume?
a) Liquid
b) Gas
c) Solid
d) Plasma -
Which state of matter takes the shape of its container but has a fixed volume?
a) Gas
b) Solid
c) Liquid
d) Vapor -
In which state do particles move freely in all directions?
a) Solid
b) Liquid
c) Gas
d) Ice -
Which of these expands to fill the entire container?
a) Solid
b) Liquid
c) Gas
d) All of the above -
Which state of matter is tightly packed?
a) Liquid
b) Solid
c) Gas
d) Vapor -
Which state flows but has no fixed shape?
a) Solid
b) Liquid
c) Ice
d) Steam -
Which of the following can exist in all three states of matter?
a) Air
b) Salt
c) Water
d) Rock -
Which state has the most energy in its particles?
a) Solid
b) Liquid
c) Gas
d) Ice -
What do we call the movement of particles in gases and liquids?
a) Shaking
b) Vibration
c) Diffusion
d) Radiation -
What is the fourth state of matter found in stars?
a) Gas
b) Plasma
c) Solid
d) Ice -
Which one is NOT a property of solids?
a) Fixed shape
b) Easy to compress
c) Definite volume
d) Tightly packed particles -
Which state is hardest to compress?
a) Liquid
b) Gas
c) Solid
d) Plasma -
Which of the following is an example of a gas?
a) Ice
b) Steam
c) Milk
d) Rock -
What keeps solid particles held tightly together?
a) High temperature
b) Weak force
c) Strong force of attraction
d) Gravity -
What is the process of changing solid into liquid?
a) Condensation
b) Melting
c) Freezing
d) Evaporation -
What do we call it when water turns into ice?
a) Evaporation
b) Condensation
c) Freezing
d) Melting -
When does evaporation happen faster?
a) In cold air
b) On cloudy days
c) With low temperature
d) With heat and wind -
What is condensation?
a) Liquid to solid
b) Gas to liquid
c) Solid to gas
d) Liquid to gas -
Which process changes a liquid into gas?
a) Melting
b) Freezing
c) Boiling
d) Condensation -
What temperature does water freeze at?
a) 100°C
b) 0°C
c) 50°C
d) 25°C -
What temperature does water boil at (sea level)?
a) 100°C
b) 0°C
c) 50°C
d) 200°C -
What causes ice to melt?
a) Pressure
b) Heat
c) Cold air
d) Wind -
Which state change happens when a gas becomes a solid directly?
a) Melting
b) Freezing
c) Deposition
d) Sublimation -
What is sublimation?
a) Solid to gas
b) Gas to solid
c) Liquid to gas
d) Gas to liquid -
Which of the following undergoes sublimation?
a) Salt
b) Ice
c) Camphor
d) Water -
What happens to water vapor on a cold surface?
a) It melts
b) It evaporates
c) It condenses
d) It freezes -
What causes steam to turn into water?
a) Evaporation
b) Condensation
c) Freezing
d) Melting -
Which of the following is not a change of state?
a) Boiling
b) Condensation
c) Mixing
d) Melting -
Which change of state needs cooling?
a) Melting
b) Evaporation
c) Condensation
d) Boiling
-
Which of these is a natural material?
a) Plastic
b) Glass
c) Cotton
d) Nylon -
Which is a man-made material?
a) Wood
b) Plastic
c) Wool
d) Rubber tree -
Which material is magnetic?
a) Wood
b) Copper
c) Iron
d) Plastic -
Which is a good conductor of electricity?
a) Plastic
b) Rubber
c) Wood
d) Copper -
Which material is waterproof?
a) Paper
b) Cloth
c) Plastic
d) Sponge -
Which of these is flexible?
a) Glass
b) Plastic
c) Brick
d) Stone -
What type of material is glass?
a) Opaque
b) Transparent
c) Soft
d) Magnetic -
Which of these is NOT a property of metal?
a) Shiny
b) Brittle
c) Hard
d) Conduct electricity -
Which material is best for making clothes?
a) Wood
b) Iron
c) Cotton
d) Glass -
What do we call materials that allow light to pass through?
a) Opaque
b) Translucent
c) Transparent
d) Magnetic
-
What is density?
a) Weight per height
b) Mass per volume
c) Height per width
d) Area per volume -
Which object has more density?
a) Wood block
b) Steel block
c) Cotton ball
d) Sponge -
What happens when you place a less dense object in water?
a) It sinks
b) It floats
c) It dissolves
d) It melts -
What happens when you place a denser object in water?
a) It floats
b) It melts
c) It sinks
d) It flies -
What unit do we use for measuring density?
a) kg/m²
b) kg/m³
c) m²
d) g -
What is the density of pure water?
a) 1 g/cm³
b) 10 g/cm³
c) 100 g/cm³
d) 0.5 g/cm³ -
Which tool helps measure volume of irregular solids?
a) Ruler
b) Thermometer
c) Measuring tape
d) Measuring cylinder -
Which material is denser: iron or foam?
a) Foam
b) Both same
c) Iron
d) Depends on size -
Why does oil float on water?
a) Oil is heavier
b) Oil is more dense
c) Oil is less dense
d) Oil mixes with water -
Which property helps decide whether a material floats or sinks?
a) Flexibility
b) Transparency
c) Density
d) Magnetism
Answer Key:
| Q.No | Ans | Q.No | Ans | Q.No | Ans | Q.No | Ans | Q.No | Ans |
|---|---|---|---|---|---|---|---|---|---|
| 1 | d | 11 | b | 21 | b | 31 | c | 41 | b |
| 2 | c | 12 | b | 22 | a | 32 | b | 42 | b |
| 3 | c | 13 | c | 23 | b | 33 | c | 43 | b |
| 4 | c | 14 | b | 24 | c | 34 | d | 44 | c |
| 5 | c | 15 | c | 25 | a | 35 | c | 45 | b |
| 6 | b | 16 | b | 26 | c | 36 | b | 46 | a |
| 7 | b | 17 | c | 27 | c | 37 | b | 47 | d |
| 8 | c | 18 | d | 28 | b | 38 | b | 48 | c |
| 9 | c | 19 | b | 29 | c | 39 | c | 49 | c |
| 10 | c | 20 | c | 30 | c | 40 | c | 50 | c |
