In chemical reactions, energy is absorbed or released in the form of
The reason of low density of gases is
The reaction that gives out heat, while taking place is known as
The 'volume' of gases is
A reaction in which liquid freezes and its solid form changes into liquid at same temperature, is called
'Bakelite' is used to
The speed of particles is fastest in
Chemical reactions are
Polyethene is used to make
Oils is separated from crude oil through the process of
The name of the oil from which ethene is obtained is
The compounds made up of hydrogen and carbon are known as
Cooking food is an example of
The freezing point of water is
In the process of forming iron sulfide by iron and sulphur, the reactant is
The properties of 'plastic' depends on
The shape of solid is
'Ethene' is
Most of the fuels such as petroleum has
Polyethene is
The varnish which was originally developed for coating the spars of sailing ships is called
The plastic industry began in
When solids are heated, they
When ethene and chlorine combine together, they form
The reaction in which heat is taken while taking place, is known as
Large and long molecules made by the linkage of small molecules are known as
John Hyatt's invention was about
Molecules in high density polythene are
Generally methane gas is known as
Gases are
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