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Which of the following statements is correct ?
(i) The presence of reacting species in a covered beaker is an example of open system.
(ii) There is an exchange of energy as well as matter between the system and the surroundings in a closed system.
(iii) The presence of reactants in a closed vessel made up of copper is an example of a closed system.
(iv) The presence of reactants in a thermos flask or any other closed insulated vessel is an example of a closed system.
Answers (1)
The answer is option (iii) the presence of reactants in a closed vessel made up of copper is an example of a closed system.
Explanation: When the reactants are in a closed vessel, the matter cannot be exchanged. However, the energy may exchange through walls. So the reactants in a copper or a steel vessel are an example of a closed system.
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