All gases during throttling process at atmospheric temperature and pre – McqOptions

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1.	All gases during throttling process at atmospheric temperature and pressure show a cooling effect except$?
A.	CO‚Äö√á√á
B.	H‚Äö√á√á
C.	O‚Äö√á√á
D.	N‚Äö√á√á
Answer» C. O‚Äö√á√á

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