The process in which a substance in solid state directly changes into gaseous state is called as:

1. Condensation
2. Sublimation
3. Deposition
4. Vaporisation

The three states of matter i.e. solid, liquid and gas exist due to :

1. Random motion of molecules in a substance
2. Intermolecular space
3. Intermolecular force of attraction
4. All of the above

Which of the following substances has the largest intermolecular spaces?

1. A piece of iron metal
2. A glass of water
3. A spoon of common salt
4. A balloon filled with hydrogen gas

The type of energy possessed by a moving body is called as:

1. Electrical energy
2. Light energy
3. Heat energy
4. Kinetic energy