Multiple choice general knowledge H2SO4 is what ? Water Salphuric Acid Hydrochloric Acid Carbon Reveal answer Fill a bubble to check yourself B Correct answer Explanation H2SO4 is sulfuric acid (misspelled as Salphuric in option B). It's a strong mineral acid used in batteries, fertilizer production, and chemical manufacturing. Water is H2O, hydrochloric acid is HCl, and carbon is an element, not a compound.