Suggest two materials other than hydrogen that can be used as fuels in fuel cells.

Consider the reaction: Cr₂O₇^2– + 14H⁺ + 6e^–⇒ 2Cr³⁺ + 7H₂O. What is the quantity of electricity in coulombs needed to reduce 1 mol of Cr₂O₇^2–?

Write the chemistry of recharging the lead storage battery, highlighting all the materials that are involved during recharging

Explain how rusting of iron is envisaged as setting up of an electrochemical cell.

Arrange the following metals in the order in which they displace each other from the solution of their salts.

Al, Cu, Fe, Mg, and Zn.