Chapter 9 Kinetic model of matter Quiz 1

Which of the following properties cannot be explained by the kinetic theory of particle?

• Density
• Compressibility 
• Shape
• Colour

Which of the following is not a property of a solid?

• It expands a little when heated compared to a liquid
• It takes any shape of a container
• It is not easy to be compressed
• It usually has a higher density than a gas

What would be the change when heat is supplied to a gas?

• The particles in the matter expand tremendously.
• The particles move randomly in all directions.
• The average kinetic energy of the particles increases.
• The particles contract and occupy lesser space.

Which of the following statements explains the Brownian motion of smoke particles?

• It is the collision between the smoke particles.
• It is the collision between the smoke particles and the wall of a container.
• It is the collision between the smoke particles and air particles.
• It is the collision between the smoke particles and the light.

When ice melts into water,

• the intermolecular force weakens and the molecules move slower.
• the intermolecular force weakens and the speed of molecules increases
• the intermolecular force becomes stronger and the molecules move faster.
• the intermolecular force becomes stronger and the speed of the molecules decreases.

Which of the following factors thus affect evaporation ?

• Increase in Surface Area

• Increase in temperature

• Increase in Humidity

• Decrease in Wind speed

What is Humidity ?

• Amount of water present in air

• Amount of water vapour present in air

• Amount of energy present

Evaporation occurs only _____

• after boiling

• after extreme cooling

• at surface of a liquid

• if boiling occurs at atmospheric pressure

Which of the the following does not affect the rate of evaporation?

• Time

• Wind

• Surface area

• Temperature

What happens when a liquid perfume is sprayed on your palm ?

• The liquid gain heat from the sanitizer and evaporate

• The liquid gain heat from the surroundings and evaporate

• The liquid gain heat from the palm and evaporate

• The liquid gain heat from the palm or surroundings and evaporate