1.Difference bw petrol and diesel engine. 2.Law of thermodynamics 3.Types of fluid 4.About my hobbies 5.Dc motor working .

1.Difference bw petrol and diesel engine. 2.Law of thermodynamics 3.Ty

1.	1.Difference bw petrol and diesel engine. 2.Law of thermodynamics 3.Types of fluid 4.About my hobbies 5.Dc motor working .
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