NEET Physics Laws of Thermodynamics MCQ Question
Which of the following combinations accurately reflects the principles of thermodynamics regarding spontaneity and entropy?
If ΔG is negative, the process is spontaneous; a positive entropy change can lead to spontaneity at high temperatures.
If ΔG is positive, the process is spontaneous; an increase in entropy must always decrease the temperature.
For an isolated system, energy can change; spontaneity is independent of entropy changes.
Isothermal processes always involve heat transfer; adiabatic processes cannot do work on the surroundings.
Correct Answer
Detailed Explanation
Statement A correctly identifies that a negative ΔG indicates spontaneity, and highlights the condition where a positive entropy change can lead to spontaneous reactions at high temperatures. This is consistent with the information provided regarding the relationship between ΔG, entropy, and temperature.
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