Which chemical compound is commonly known as 'blue vitriol' and is used as a fungicide and algicide?

💡 Solution & Explanation

Copper sulfate pentahydrate forms bright blue crystals widely known as blue vitriol, which serve effectively as agricultural fungicides, algaecides, and herbicides. Alternative options like ferrous sulfate and zinc sulfate have different mineral names, such as green vitriol and white vitriol, and distinct industrial applications. This compound is frequently used in Bordeaux mixture for crop protection against fungal infections.