General Science MCQs – States of Matter (Job Test Preparation in Pakistan)
Which state of matter has a definite shape and volume?
Solids have a fixed shape and volume due to tightly packed particles.
Which state of matter takes the shape of its container but has a definite volume?
Liquids take the shape of their container but maintain a fixed volume.
Which state of matter has neither shape nor volume?
Gases expand to fill their container, so they have neither fixed shape nor volume.
Change of solid into liquid is called?
Melting is the process where a solid turns into a liquid due to heat.
Change of liquid into gas is called?
Evaporation is the process where a liquid turns into a gas at temperatures below its boiling point.
Change of gas into liquid is called?
Condensation is the process where a gas cools and becomes a liquid.
Change of liquid into solid is called?
Freezing is the process where a liquid turns into a solid as it cools.
Temperature at which a liquid turns to gas is?
The boiling point is the temperature at which a liquid turns into a gas.
Which state of matter has tightly packed particles?
Solids have particles that are tightly packed in a fixed arrangement.
Which state has particles that move freely and fast?
Gas particles move freely and quickly, filling the space available.
Which state can be compressed easily?
Gases can be compressed because their particles are far apart.
Ice belongs to which state of matter?
Ice is the solid form of water.
Direct change of solid to gas is called?
Sublimation is the process where a solid turns directly into a gas without becoming a liquid.
The state of matter with no definite shape or volume is?
Gases have neither a fixed shape nor volume.
Which change of state involves cooling?
Condensation occurs when a gas cools and turns into a liquid.
The particles in a liquid are?
Liquid particles are close together but can move past one another.
Which state is least affected by pressure changes?
Solids are the least compressible and least affected by pressure changes.
The transition from liquid to solid is called?
Freezing is the process where a liquid turns into a solid.
Which factor increases evaporation?
Higher temperatures increase the rate of evaporation.
When solid iodine is heated, it changes to gas. This is?
Solid iodine sublimes, turning directly into a gas when heated.
The process of gas turning into liquid is called?
Condensation is the process where a gas becomes a liquid.
The fixed shape and volume are properties of?
Solids have both a fixed shape and volume.
Which state of matter has no fixed volume or shape?
Gases expand to fill their container, so they have no fixed shape or volume.
The particles in solids are?
Solid particles are tightly packed in a fixed arrangement.
Which process changes solid directly into gas?
Sublimation is the direct transition from solid to gas.
The ability to flow is a property of?
Liquids can flow because their particles can move past one another.
Which state of matter is found in stars?
Stars are composed of plasma, a high-energy state of matter.
The process of liquid changing into gas is called?
Evaporation is the process where a liquid turns into a gas.
Which state has the highest energy particles?
Plasma particles have the highest energy due to extreme temperatures.
Change of gas to solid without liquid stage is?
Deposition is the process where a gas turns directly into a solid.
Which of these expands the most on heating?
Gases expand the most when heated because their particles move faster and spread out.
Melting point of ice is?
Ice melts at 0°C under standard conditions.
Boiling point of water is?
Water boils at 100°C under standard atmospheric pressure.
Which state is compressible?
Gases are easily compressible due to the space between their particles.
The heat required to change solid into liquid is called?
Latent heat is the energy required to change the state of a substance without changing its temperature.
Which state takes the shape of container but has fixed volume?
Liquids take the shape of their container but have a fixed volume.
Dry ice changes into gas by?
Dry ice (solid CO₂) sublimes directly into a gas.
Which of these has the weakest intermolecular forces?
Gases have the weakest forces between particles, allowing them to move freely.
Solids usually have?
Solids maintain a fixed shape due to strong intermolecular forces.
Which process requires energy input?
Melting requires energy to break the bonds holding solid particles together.
Liquids can be compressed?
Liquids are slightly compressible, but much less so than gases.
Which form exists between solid and gas?
Liquids exist between solids and gases in terms of particle arrangement and energy.
The kinetic energy of solid particles is?
Solid particles have the least kinetic energy because they vibrate in fixed positions.
Which factor affects the state of matter?
Both temperature and pressure can change the state of matter.
Matter exists in how many main states?
The three main states of matter are solid, liquid, and gas (plasma is also considered a state).
Which change turns gas into liquid?
Condensation is the process where a gas becomes a liquid.
The particles in gas move?
Gas particles move randomly and rapidly in all directions.
Which matter state is used in fluorescent bulbs?
Fluorescent bulbs use plasma to produce light.
The process of solid changing into liquid is called?
Melting is the process where a solid turns into a liquid.
Which matter state has the strongest forces between particles?
Solids have the strongest intermolecular forces, keeping particles in a fixed position.