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A sample of liquid in a thermally insu...

A sample of liquid in a thermally insulated constant ( a calorimetre ) is strirred for 2 hr. by a mechancal linkage to motor in the surrounding ,for this procees :

A

`wlt0, q=0, DeltaU=0`

B

`wgt0, q=0, DeltaUgt0`

C

`wlt0,qgt0, DeltaU=0`

D

`wgt0,q=0, DeltaUgt0`

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The correct Answer is:
D
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