C09 State of matter

The arrangement of constituent particles is most ordered in

• Solid state

• liquid state

• gaseous state

• all of these

Which of the following is not a characteristic of matter?

• Matter is made up of extremely small particles

• There is no space between particles of matter

• The particles of matter are continuously moving

• The particles of matter attract each other.

During summer, water kept in earthen pot becomes cool due to phenomenon of

• Diffusion

• Transpiration

• Distillation

• Evaporation

Which of the following is correct order of forces of attraction?

• Water > Air > Sand

• Air > Sugar > Oil

• Air < Water < Sugar

• Salt > Air > Juice

Which of the following conditions will increase the rate of evaporation?

• Increase in temperature of water

• Decrease in wind speed

• Decrease in surface area of water

• Adding sugar to water

Which of the following is incorrect?

• Solids have fixed shape and fixed volume.

• Liquids have fixed volume but not shape

• Gases have neither fixed shape nor volume

• The particles have least intermolecular space but maximum kinetic energy in liquids.

Ice floats on water because

• it has higher density than water

• it has lower density than water due to more volume

• it is solid

• it is low melting solid

Latent heat of fusion is amount of

• heat energy required to change 1 kg solid into liquid completely at its melting point.

• heat energy required to convert 1 kg solid into liquid at room temperature

• heat energy required to change 1 g of solid into liquid completely

• heat energy required to change 1 kg of solid into liquid at any temperature.

The temperature at which vapour pressure of liquid becomes equal to atmospheric pressure is called

• melting point

• boiling point.

• ignition temperature

• sublimation temperature.

Which of the following is not correct?

• SI unit of temperature is kelvin

• SI unit of pressure is atm

• SI unit of density is kg/m³

• 1 litre = 1000 cm³ = 1 dm³