Q151. When the dichromate ion (Cr2O72-) acts as an oxidizing agent in an acidic medium, the oxidation state of chromium changes from:Chemistry — NUST Mock By Dogers 4 — Question 151 of 200A. Tetravalent (+4) to trivalent (+3)B. Tetravalent (+4) to divalent (+2)C. Hexavalent (+6) to trivalent (+3)D. Hexavalent (+6) to tetravalent (+4)Practice more Chemistry MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →