Why there is a need for second law of thermodynamics? Give its importa

1.	Why there is a need for second law of thermodynamics? Give its importance.
Answer» Thermodynamics first law tells that there is an exact equivalence between various forms of energy and that heat gained is equal to heat loss. Practically it is not possible to convert the heat energy into an equivalent amount of work. To explain this, another law is needed which is known as second law of thermodynamics. The second law of thermodynamics helps us to predict whether the reaction is feasible or not and also tell the direction of the flow of heat. It also tells that energy cannot be completely converted into equivalent work.

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Why there is a need for second law of thermodynamics? Give its importance.

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