Coca Cola is one of the most popular soft drinks in the world, but did you know it has a number of other useful applications besides quenching thirst? The citric acid in Coke removes stains from vitreous china, so you can use Coca Cola to clean your toilet bowl. You can also use it to remove rust spots from chrome car bumpers or corrosion from car battery terminals. It is also perfect for loosening a rusted bolt.