Question:
Which of the following statements is correct?
(i) The presence of reacting species in a covered beaker is an example of
an open system.
(ii) There is an exchange of energy as well as a 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.
Solution:
Option (iii) The presence of reactants in a closed vessel made up of copper is an
example of a closed system is the answer.
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