The colloidal solution commonly used in the treatment of skin diseases is Colloidal Sulphur.
Reason: Sulphur has antifungal and antibacterial properties. In colloidal form, it is more effective and is used in treating conditions like acne, eczema, and fungal infections.
Correct Answer: Colloidal Sulphur
Read the following statements: Statement I: All vertebrates develop a row of vestigial gill slits during embryonic stage.
Statement II: Embryos always pass through the adult stages of other animals.