Which metal is used as a catalyst in contact process for making sulphuric acid?
Last Updated:
This SSC CGL Chemistry question asks: “Which metal is used as a catalyst in contact process for making sulphuric acid?” The correct answer is Vanadium pentoxide. V2O5 (vanadium pentoxide) is used as catalyst in Contact process for SO3 formation from SO2 and O2. Acid basicity refers to the number of ionisable protons, not simply the number of hydrogen atoms written in a formula. Option A (“Iron”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option B (“Platinum”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question.