Question

The First Law of Thermodynamics represents:

• A. Law of conservation of mass
• B. Law of conservation of energy
• C. Law of conservation of charge
• D. Law of conservation of momentum

Hint:

Always think of the First Law as an energy balance sheet for a system. It doesn’t describe how energy is used or exchanged (that’s where other concepts like enthalpy and entropy come in), just that the total amount remains constant. Remember, internal energy (U) is a state function, dependent only on initial and final states, not the path taken to get there.

Answer 1

The Correct Option is B

The First Law of Thermodynamics states that energy cannot be created or destroyed; it can only be transferred or converted from one form to another. This principle is essentially the Law of Conservation of Energy, which applies to all thermodynamic processes.
Hence, the correct answer is (B) Law of conservation of energy.