Thermodynamic Systems: Open, Closed, Isolated
1 / 10
In which system is only heat or work exchanged but not matter?
Explanation: In a closed system, energy crosses the boundary but the matter remains fixed.
2 / 10
 Which one of the following is NOT a feature of a closed system?
Explanation: A closed system does not allow mass to flow — only energy crosses.
3 / 10
A piston-cylinder arrangement with no heat loss and fixed mass is:
 Explanation: No mass transfer but energy in the form of work/heat can move — closed system.
4 / 10
 Which system applies to a human being breathing air?
Explanation: A human body exchanges both energy and matter with the environment — an open system.
5 / 10
 Which one of the following represents an isolated system?
 Explanation: A perfectly insulated thermos prevents both heat and matter transfer — isolated in theory.
6 / 10
A thermos bottle attempts to behave like:
 Explanation: In a closed system, energy crosses the boundary but the matter remains fixed.
 Explanation: Heat and vapor (matter) can leave the pot — making it an open system.
7 / 10
 Which of these is the best example of an open system?
8 / 10
An isolated system is best described as:
 Explanation: An isolated system does not interact with surroundings — no matter or energy crosses the boundary.
9 / 10
 Which of the following is a closed system?
Explanation: A closed system doesn’t allow matter exchange, only energy like heat can pass.
10 / 10
An open system allows:
Explanation: In open systems, both matter and energy can enter or leave the system.
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