Question -
Tea contained in a mug is an example of:
Options:
A .  Isolated system
B .  Open system
C .  Closed system
D .  None
Answer: Option B : B Let's talk about the different kinds of system first. Open system -matter and energy both can be transferred. Closed system - Only energy can be transferred. Isolated - Neither energy nor matter can be transferred. A mug is a vessel, it allows for the exchange of matter and energy between the system and surroundings. Thus it is an open system.
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