Which of the following relation is not valid for throttling process? – McqOptions

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1.	Which of the following relation is not valid for throttling process?
A.	Enthalpy before expansion = Enthalpy after expansion
B.	Pressure before expansion = pressure after expansion
C.	External work done = Zero
D.	Mass before expansion = mass after expansion
E.	None of the above
Answer» C. External work done = Zero

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