Matter in our surroundings

Matter is made up of

• substances

• materials

• states

• particles

Mass per unit volume of a substance is

• Rigidity

• Density

• Compressibility

• Viscosity

Which of the following is fifth state of matter?

• Plasma

• Solid

• Bose Einstein Condensate

• Liquid

Fusion is the process of change of

• Liquid into solid

• Solid into liquid

• Solid into gas

• Gas into solid

Intermixing of two or more matter on their own is called

• Diffusion

• Sublimation

• Condensation

• Solidification

Which is an example of bulk phenomenon?

• Evaporation

• Sublimation

• Boiling

• Condensation

The amount of water vapour present in the air is called

• Transpiration

• Vapourisation

• Humidity

• Diffusion

Intermolecular force of attraction is maximum in

• Gases

• Solids

• Plasma

• Liquids

The boiling point of water is

• 100 K

• 273 K

• 373 K

• !73 K

We wear cotton clothes in summer because

• they are cheap

• they are light weight

• they absorb sweat, which on evaporation causes cooling

• they do not harm our skin