Thermodynamics is a branch of physics which deals with the effect of heat, energy and work of a system. Zeorth law, first and second law of thermodynamics leads to the thermodynamic properties which help us to understand and predict the operation of physical system. Basic concepts of thermodynamics are used in the field of refrigeration, air conditioning, various power plants and Internal combustion engine. It is very useful for the students of Mechanical and Automobile engineering students.