Consider two insulated chambers (A,B) of...

Consider two insulated chambers (A,B) of same volume connected by a closed knob ,S. 1 mole of perfect gas is confined in chamber A. What is the change in entropy of gas when knob S is opened ?

`1.46J//K`

`3.46 J//K`

`5.46 J//K`

`7.46 J//K`

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