The book described in this section was designed as laboratory work for students studying from various parts of the book. The book have all been tested in our own teaching at "Sarojini Naidu Government Girls Post Graduate (Autonomous) College, Shivaji Nagar, Bhopal India", but laboratory work without doubt has local dependencies. We have done a quick pass through the book to specific details. Teachers should read the book very carefully for problems that may arise when students attempt them in their local environment. It might be wise to regard these descriptions of this book, to be suitable for students' knowledge.