Which of the following is the unit of entropy?

Explanation:

• Entropy is a measure of disturbance, higher the entropy with the positive sign, more are the chances of the reaction taking place spontaneously

\(S = \frac{{{\rm{Δ }}Q}}{T}\)

Where S is entropy, ΔQ is heat exchanged and T is temperature.

• The SI unit of Entropy is Joule per Kelvin (J/K).
• Heat exchange (Δ Q) is a type of energy.
• Joule (J) is the SI unit of Work or Energy.
• Kelvin is the SI unit of temperature

So SI unit of entropy (S) = Unit of energy/ Unit of temperature = J/K

Hence option 1 is correct.