Q.1 Which of the following states of matter has a definite volume but no definite shape?
Solid
Liquid
Gas
Plasma
Explanation - Liquids have a definite volume but take the shape of their container.
Correct answer is: Liquid
Q.2 What is the primary reason gases are easily compressible?
Large intermolecular spaces
Strong intermolecular forces
High density
Low kinetic energy
Explanation - Gases have large spaces between particles, allowing them to be compressed easily.
Correct answer is: Large intermolecular spaces
Q.3 Which of the following is true for solids?
Particles move freely
Have definite shape and volume
No intermolecular forces
Highly compressible
Explanation - Solids have closely packed particles, giving them a fixed shape and volume.
Correct answer is: Have definite shape and volume
Q.4 Which of the following phenomena is an example of sublimation?
Ice melting
Dry ice turning into gas
Water boiling
Condensation of steam
Explanation - Sublimation is the direct transition from solid to gas without passing through the liquid state.
Correct answer is: Dry ice turning into gas
Q.5 Which of the following is not a property of plasma?
Highly ionized
Good conductor of electricity
Definite shape
Found in stars
Explanation - Plasma does not have a definite shape or volume; it is ionized and conducts electricity.
Correct answer is: Definite shape
Q.6 The kinetic theory of gases explains
Compressibility of solids
Shape of liquids
Pressure exerted by gases
Formation of crystals
Explanation - According to the kinetic theory, gas particles collide with the container walls, creating pressure.
Correct answer is: Pressure exerted by gases
Q.7 Which of the following is true for liquids?
They have a fixed shape
They are highly compressible
They flow and take the shape of the container
Particles are widely spaced
Explanation - Liquids have a definite volume but can flow to fit the shape of their container.
Correct answer is: They flow and take the shape of the container
Q.8 Which factor is most responsible for surface tension in liquids?
Kinetic energy of particles
Intermolecular forces
Volume of liquid
Pressure applied
Explanation - Surface tension arises due to cohesive forces between molecules at the liquid's surface.
Correct answer is: Intermolecular forces
Q.9 Which state of matter has particles that are far apart and move randomly?
Solid
Liquid
Gas
Plasma
Explanation - Gas particles have large spaces and move randomly, allowing them to expand and fill containers.
Correct answer is: Gas
Q.10 What is the process of converting gas into liquid called?
Sublimation
Condensation
Evaporation
Melting
Explanation - Condensation is the process where gas loses energy and changes into liquid.
Correct answer is: Condensation
Q.11 Which of the following is a property of solids?
Indefinite volume
Definite shape
Easily compressible
No fixed arrangement of particles
Explanation - Solids have a fixed, definite shape due to closely packed particles.
Correct answer is: Definite shape
Q.12 Which of these states of matter has the highest kinetic energy per particle at the same temperature?
Solid
Liquid
Gas
Plasma
Explanation - Plasma particles are highly energetic and ionized, so they have higher kinetic energy than solids, liquids, or gases.
Correct answer is: Plasma
Q.13 Which law relates the pressure and volume of a gas at constant temperature?
Charles's Law
Boyle's Law
Avogadro's Law
Gay-Lussac's Law
Explanation - Boyle's Law states that pressure and volume are inversely proportional at constant temperature.
Correct answer is: Boyle's Law
Q.14 The transition from liquid to gas at temperatures below the boiling point is called
Evaporation
Boiling
Condensation
Sublimation
Explanation - Evaporation occurs at the surface of a liquid at any temperature below the boiling point.
Correct answer is: Evaporation
Q.15 Which of the following is the least compressible?
Solid
Liquid
Gas
Plasma
Explanation - Solids are incompressible due to closely packed particles.
Correct answer is: Solid
Q.16 The phenomenon of diffusion is fastest in which state of matter?
Solid
Liquid
Gas
Plasma
Explanation - Gas particles move fastest and are far apart, making diffusion fastest in gases.
Correct answer is: Gas
Q.17 Which of the following states of matter can conduct electricity?
Solid
Liquid
Gas
Plasma
Explanation - Plasma contains charged particles (ions and electrons) which can conduct electricity.
Correct answer is: Plasma
Q.18 Which of these processes occurs when a solid absorbs energy and becomes a gas?
Evaporation
Melting
Sublimation
Condensation
Explanation - Sublimation is the direct transition from solid to gas without passing through the liquid state.
Correct answer is: Sublimation
Q.19 Which factor affects the rate of evaporation?
Surface area
Temperature
Wind speed
All of the above
Explanation - Evaporation rate increases with surface area, temperature, and wind speed.
Correct answer is: All of the above
Q.20 Which of the following has no fixed shape or volume?
Solid
Liquid
Gas
Amorphous solid
Explanation - Gases expand to fill any container, so they have no fixed shape or volume.
Correct answer is: Gas
Q.21 Plasma differs from gas because it
Has higher density
Contains charged particles
Is incompressible
Has fixed volume
Explanation - Plasma is ionized gas with free electrons and ions, unlike neutral gas particles.
Correct answer is: Contains charged particles
Q.22 Which of the following states has the maximum interparticle attraction?
Solid
Liquid
Gas
Plasma
Explanation - Particles in solids are closely packed and held by strong intermolecular forces.
Correct answer is: Solid
Q.23 Which statement is true about liquids?
They are highly compressible
They have a definite shape
They have a definite volume
Particles are far apart
Explanation - Liquids take the shape of the container but maintain a constant volume.
Correct answer is: They have a definite volume
Q.24 Which property is exhibited by both liquids and gases?
Definite shape
Definite volume
Ability to flow
Incompressibility
Explanation - Both liquids and gases can flow, though liquids have definite volume while gases do not.
Correct answer is: Ability to flow
Q.25 Which process changes a liquid into solid?
Condensation
Freezing
Evaporation
Sublimation
Explanation - Freezing occurs when a liquid loses energy and turns into solid.
Correct answer is: Freezing