True or False in each of the following determine whether the statement is true or false
6 Heat engine is any device that convert thermal energy into mechanical work.
7.In every heat engine all of the heat can be converted into work
8. Mechanical work takes place in the piston of a gasoline engine.
9. There is no ideal heat engine making some heat exhaust in the environment
10. Thermal pollution is brought about by the accumulated exhaustion of heat from dieselgasoline and
industrial engines.

6. In thermodynamics and engineering, a heat engine is a system that converts heat to mechanical energy, which can then be used to do mechanical work. It does this by bringing a working substance from a higher state temperature to a lower state temperature. ... In general, an engine converts energy to mechanical work.

7. According to the second law of thermodynamics, however, it cannot convert *all* of the heat energy supplied to it into work. Basic heat engine: hot reservoir, cold reservoir, and a machine to convert heat energy into work. This is a simplified diagram of a heat engine, along with its thermal cycle.

8.the end of the compression stroke) the compressed air-fuel mixture is ignited by a spark plug (in a gasoline engine) or by heat generated by high compression (diesel engines), forcefully returning the piston to B.D.C. This stroke produces mechanical work from the engine to turn the crankshaft.

10.Thermal pollution is brought about by the accumulated exhaustion of heat from diesel, gasoline and industrial engines. The correct answer is TRUE. The statement that thermal pollution is brought about by the accumulated exhaustion of heat from diesel, gasoline and industrial engines is indeed correct.