Question

Which of the following statements is correct?

• A. the presence of reacting species in a covered beaker is an example of open system.
• B. There is an exchange of energy as well as matter between the system and the surroundings in a closed system.
• C. The presence of reactants in a closed vessel made up of copper is an example of a closed system.
• D. The presence of reactants in a thermos flask or any other closed insulated vessel is an example of a closed system.

Answer 1

Answer: (C)

The presence of reactants in a closed vessel made up of copper is an example of a closed system.

Answer 2

: In a closed system (e.g., the presence of reactants in a closed vessel made of conductiong material i.e. copper) there is no exchange of matter, but exchange of energy is possible between system and the surroundings.