GENERAL KNOWLEDGE

Detailed explanation-1: -yes and no. Energy cannot be created or destroyed, but it can change from more-useful forms into less-useful forms. As it turns out, in every real-world energy transfer or transformation, some amount of energy is converted to a form that’s unusable (unavailable to do work).

Detailed explanation-2: -The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. One simple statement of the law is that heat always moves from hotter objects to colder objects (or “downhill"), unless energy in some form is supplied to reverse the direction of heat flow.

Detailed explanation-3: -What is the second law of thermodynamics? The second law of thermodynamics asserts that heat cannot move from a reservoir of lower temperature to a reservoir of higher temperature in a cyclic process.

Detailed explanation-4: -The second law of thermodynamics states that the total entropy of a system either increases or remains constant in any spontaneous process; it never decreases.