Two indefinite characteristics of gases are
For combustion, the required gas is
Mixing of iron and sulphur together brings
Ammonia is made by mixing two gases. These gases are
The change of shape of liquid according to the shape of container is due to
Melting point of 'sulphur' is
To separate the molecules of ethene dichloride, the compound is
For security and military purpose, ammonia is used in
If there is lack of nitrogen in soil, plants turn
In liquids the intermolecular force of attraction is equal to
By heating the color of mixture of sulphur and iron which is yellow turns to
Polyvinyl chloride is a
In liquids the force of attraction between particles is
Burning hydrocarbons produce
The regular arrangement of particles is found in
Hydrogen is obtained by
When the state of matter is changed from liquid to gas, we call it
Particles are packed closely and tightly in
Wood is a
When gas is cooled down, it changes its state into liquid. This is called
Polythene was discovered in
When methane is combusted, it produces
PVC sheets are also used to make
The vibration of particles in solids at fixed position is due to
The strongest force of attraction is found in
Solids that flow like liquids are
The odour of ammonia is
Long chain of atom is linked by
To make PVC, molecules of vinyl chloride are
When particles cool down, energy changes
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