Which of the following statement is correct ?A. The presence of reaction speciesin 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 insolated vessel isan example of a closed system.

Which of the following statement is correct ?A. The presence of reacti

1.	Which of the following statement is correct ?A. The presence of reaction speciesin 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 insolated vessel isan example of a closed system.
Answer» Correct Answer - c For a closed vessel made of copper , no matter can exchange between the systemand the surroundings but energy exchange can occur through its walls.

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