Which one of the following is made up of carbon only?

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Accepted Answer

Graphene. Graphene is an allotrope of carbon therefore it consists of only carbon atoms, while Kevlar is a synthetic fiber made up of Carbon, Hydrogen, Nitrogen and Oxygen, Lexan is a polycarbonate resin thermoplastic made up of carbon and hydrogen, Spider silk is a type of protein. Graphene is the strongest material ever tested.

Which one of the following is made up of carbon only?

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