Moore’s Law Cannot Be Sustained Since MOSFET’s Cannot Be Scaled Below 10nm Due To Its Physical Properties .This Trade-Off Paves A Way For New Material Used In Fetes To Sustain Moore’s Law, Various Other Technologies Include Fin-Shaped FET (Finfet), Carbon Nano-Tube FET (CNTFET), Reversible Logic, Reconfigurable Logic And Grapheme Nano-Ribbon FET (GNRFET), Among The Available Alternatives GNRFET’s Has Proven To Be A Promising Potential Replacement In Terms Of Design Area, Lower Power Consumption And Faster Operation. Carbon Is An Interesting Element Because Even If Some Material Is Made Up Of Carbon Atoms, It Can Have Various Morphologies And Characteristics Depending On How Carbon Atoms Bind Together. Designing Of RCA And Cska Adders Using GNRFET.