This class is for 12th Standard class 12 students to understand the chapter on different kinds of solutions encountered in chemistry, and the various concepts associated witht them such as Henry's Law, colligative properties and more which are crucial topics which will be useful later on. It is conducted in online video mode using digital pen and tab to explain the derivations and students need to bring a pen and notebook to jot down the important formulae. This chapter is very important because it covers the different concentration term definitions like parts per million, normality, molarity, molality, etc. which are used for solving numericals involving the concentrations of different solutions. Numerical problem-solving tips will also be covered in this class, to solve the questions quickly which is useful for competitive examinations like NEET and JEE entrance exams. The importance of this chapter is such that it cannot be overlooked and this class aims to explain the topic in a clear-cut way.