A) Change in entropy during a reversible adiabatic process is zero.
B) Entropy increases with the addition of heat.
C) Throttling is a constant entropy expansion process.
D) Change in entropy when a gas is heated under constant pressure is given by\[{{s}_{2}}-{{s}_{1}}=m{{c}_{p}}\,\,lo{{g}_{e}}\,\frac{{{T}_{2}}}{{{T}_{1}}}\]
Correct Answer: C
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