JEE Main · d- and f-Block Elements · Quiz
5 real JEE Main questions on d- and f-Block Elements. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.
Question 1 of 5
MEDIUMIn acidic medium, potassium dichromate (K2Cr2O7) oxidizes ferrous ions to ferric ions. What is the change in oxidation state of chromium in this reaction?