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 C 3

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 true as the processes which occurs naturally are called sponteneous processes and in these entropy increases.
4. The given statement is true as Entropy is the measurement of randomness of system.

So, we can see that 3 statements are true.


Theory:

Entropy (S):

• Entropy is defined as a measure of randomness or disorder of a system

• All-natural processes are spontaneous because of an increase in randomness.

Some factors affecting Entropy are:

Number of particles: As the number of particles increases, the number of ways of energy distribution increases, and thus entropy increases.

$dS\propto \frac{d{q}_{rev}}{T}$
$dS\propto dq$
$dS\propto \frac{1}{T}$

Entropy is State function and Extensive property.