Which is an example of effusion? – McqOptions

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1.	Which is an example of effusion?
A.	air slowly escaping from a pinhole in a tire
B.	the aroma of a cooling pie spreading across a room
C.	helium dispersing in to a room after a ballon pops
D.	oxygen and gasoline fumes mixing in an automobile carburetor
Answer» B. the aroma of a cooling pie spreading across a room

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