Some Interview questions for Mechanical Engineers

These are some of the frequently asked questions for freshers of Mechanical discipline. So all the Mechies, be prepared with the answers to these questions, when you attend an interview.

1. What is the importance of the Thermodynamics in the field of Mechanical Engineering?
2. How many Laws of Thermodynamics are there? 
3. State Laws of conservation of energy? 
4. Is the boiler a closed system? 
5. What is Carnot engine? 
6. Which formula forms a link between the Thermodynamics and Electro chemistry? 
7. Which is the hardest compound known? 
8. What is Hess Law? 
9. Which has more efficiency: Diesel engine or Petrol engines? 

To make the blog more interactive, i request the readers to post the answer(s) to any of the question(s) if you have the answer.