Sultan: Hello Sakil! How are you? Sakil: I am fine and you? Sultan: I am fine too. Why are you so late today? Sakil: Sorry, I was stranded on the way because of a procession. Sultan: What is it about? Who arranged this procession? Sakil: You know there prevails political unrest in our country always. The opposition cannot tolerate the ruling party. Sultan: Yes. The ruling party is also trying to dominate others. Recently they have made an issue by dissolving the caretaker government system.    Sakil: Exactly! The opposition parties are opposing the act of dissolving the caretaker government and demanding the resignation of the government.   Sultan: Oh, I see! The opposition parties may have arranged today's procession prior to three days' dawn to dusk hartal. Sakil: You are right. To speak the truth, ours is a country of political unrest at this moment. The political parties cannot tolerate each other. They do not think for the welfare of the people.   Sultan: Absolutely! They

    Dear ....... I  am fit and fine here and hope the same for you. I had told you before that I am going to participate in National debate competetion. And now I have won the same debate competetion and awarded education minister on past day.   The debate was very well spoken by everyone. Our oposing team was Savar cantonment school and college. They also so good but our team was more capable so we won the debate. At the end of the competition, the education minister spoke. He praised us profusely and handed us the winning certificate. Our teacher who  trained us is also very happy by seeing our this achievement. Rest is fine. Give my regards to Father and Mother and Lots of Love for you. Waiting for your reply. Reply soon Your elder sister  ( Your Name )

Potentiometry Potentiometry is an analytical method in which the amount of a substance in solution is determined either directly or indirectly from the measurement of electromotive (e.m.f) between two electrodes that are dipped into the solution. Potentiometric titration Titration in which the end point is determined with the help of potential change is called potentiometric titration. In this titration, the measurement of potential is important because the potential developed by a particular electrode immersed in a solution, is dependent on the presence of some entity in the solution and on its concentration in the solution. There are four types of potentiometric titration  •         Acid Base titration •         Oxidation-reduction titration •         Complexometric titration •         Precipitation titration        Reference Electrode A reference electrode is one which develops a definite potential to which the potential of other electrode can be compared. Indicator Electrode  An in