Question

Consider the following statements about entropy.

The number of the statements which are true out of the above statements is/are:

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is B 2

1. Entropy is an extensive property. So, this statement is true.
2. This statement is false as entropy is a state function.
3. This statement is false as we know from the second law of thermodynamics that all sponteneous processes are accompanied with an increase in entropy i.e $\Delta S_{universe}>0$.
4. The given statement is true as it can be modified as
$\Delta S_{universe}=\Delta S_{sys}+\Delta S_{surr}$

So, we can see that 2 statements are true.