If a chemical change is brought about by one or more methods in one or more steps, then the amou...

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If a chemical change is brought about by one or more methods in one or more steps, then the amount of heat absorbed or evolved during the complete course of reaction is same, whichever method was followed. This law is known as:
(A) Le-Chatelier's principle
(B) Hess's law
(C) Joule-Thomson effect
(D) Trouton's law
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