First Law of Thermodynamics: The first law of thermodynamics is also called the law of conservation of energy. It may be stated as- 1st Statement- Energy can neither be created nor destroyed in this universe although it may change from one form to another. 2nd Statement- The total energy of an isolated system remains constant although it may change from one form to another. 3rd Statement- If energy disappears in one form, it must reappear in exactly equivalent quantity of some other form. 4th Statement- It is impossible to construct a perpetual motion machine that can work without consuming any … Continue reading First Law of Thermodynamics