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Explanation:
sulphur :It is used in the vulcanisation of black rubber.
copper:due to ductility thermal conductivity,copper is often used in the production of electrics
zinc:is also used in alloys such as brass,nickel, silver,aluminium solder
hydrogen :chemical processess and reaction.
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Hydrogen.
Explanation:
The most common use of hydrogen is in chemical processes and reactions.
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