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Atomic bombs
Dynamo
A battery
Electric heaters
Cooking gas is a mixture of
Copper substances when exposed to air gains a green coating due to the formation of:
Covalent bonds are mainly found in
Cryolite is:
Currency coins are alloys of different metals. One metal that is present in all coins is
Diamond is harder than graphite because of :
Diamond is lustrous because
Diamond is the form of carbon that is
Discovery of the nucleus of an atom was due to the experiment carried out by
Domestic cooking gas consists mostly of