JEE Main 202324 Jan, Evening shiftChemistryEasyp-Block Elements95× since 2002K2Cr2O7\mathrm{K_2Cr_2O_7}K2Cr2O7 paper acidified with dilute H2SO4\mathrm{H_2SO_4}H2SO4 turns green when exposed to :AOption A. Sulphur dioxideBOption B. Sulphur trioxideCOption C. Hydrogen sulphideDOption D. Carbon dioxideCheckSkip · show solution