An isolated system – McqOptions

MCQOPTIONS

1.	An isolated system
A.	is a specified region where transfer of energy and/or mass take place
B.	is a region of constant mass & only energy is allowed to cross the boundaries
C.	cannot transfer either energy or mass to or from the surroundings
D.	is one in which mass within the system is not necessarily constant
Answer» D. is one in which mass within the system is not necessarily constant

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