Question

Select the correct sequence:
A. Zeroth law of thermodynamics
B. First law of thermodynamics
C. Second law of thermodynamics
D. Third law of thermodynamics
Choose the correct answer from the options given below:

• A. A, B, C, D
• B. B, C, A, D
• C. B, A, D, C
• D. C, B, D, A

Hint:

The numbering of the laws of thermodynamics is a historical artifact. The First and Second laws were established first. The Zeroth law was recognized later as a necessary foundation for the others, so it was placed before the First. Remember the sequence as 0, 1, 2, 3.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
This is a factual question asking for the standard numerical order of the laws of thermodynamics.
Step 2: Detailed Explanation:
The laws of thermodynamics are conventionally numbered based on their conceptual development and logical hierarchy.


Zeroth Law: Defines thermal equilibrium and temperature. It was formulated after the First and Second Laws but is considered more fundamental, hence the "zeroth" designation. This corresponds to A.
First Law: Deals with the conservation of energy and introduces internal energy. This corresponds to B.
Second Law: Deals with entropy and the direction of spontaneous processes. This corresponds to C.
Third Law: Deals with the behavior of entropy as the temperature approaches absolute zero. This corresponds to D.

The correct and standard sequence is Zeroth, First, Second, Third.
Step 3: Final Answer:
The correct sequence is A, B, C, D.