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Oxygen
Nitrous oxide
Nitrogen dioxide
Coloured impurities
Commercially, sodium bicarbonate is known as
Constantan is an alloy of copper and
Conversion of chemical energy into electrical energy occurs in
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