C-12-Q066mediumsingle_mcqGeneral formula of soap may be written as—aR-COONa\mathrm{R\text{-}COONa}R-COONabR-OH\mathrm{R\text{-}OH}R-OHcR-COOH\mathrm{R\text{-}COOH}R-COOHdR-NH2\mathrm{R\text{-}NH_2}R-NH2