A) open system
B) closed system
C) isolated system
D) none of these
Correct Answer: A
Solution :
Key Idea: (i) Open system: Heat and matter both are exchanged between system and surrounding. (ii) Closed system: Only heat is exchanged between system and surroundings. (iii) Isolated system: Neither heat nor matter is exchanged between system and surroundings. Human body is an example of open system because it can exchange both heat and matter with its surroundings.
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