1.

For free expansion of the gas which of the following is true [AMU (Med.) 2000]

A. \[Q=W=0\] and \[\Delta \,{{E}_{\operatorname{int}}}=0\]
B. \[Q=0,\,W>0\] and \[\Delta {{E}_{\operatorname{int}}}=-W\]
C. If assertion is true but reason is false.
D. \[W>0,\,Q<0\] and \[\Delta {{E}_{\operatorname{int}}}=0\]
Answer» B. \[Q=0,\,W>0\] and \[\Delta {{E}_{\operatorname{int}}}=-W\]


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