A) \[\Delta E=\Delta W\ne 0,\,q=0\]
B) \[\Delta E=W=0,\,q\ne 0\]
C) \[\Delta E=0,\,W=q\ne 0\]
D) \[W=0,\,\Delta W=q\ne 0\]
Correct Answer: A
Solution :
In closed insulated container a liquid is stirred with a paddle to increase the temperature, therefore it behaves as adiabatic process, so, for it q = 0. Hence, from first law of thermodynamics \[\Delta E=q+W\,if\,\,q=0\] \[\therefore \,\Delta E=W\,\] but not equal to zero.
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