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A sample of liquid in a thermally insu...

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

A

`w lt 0, q = 0, Delta U = 0`

B

`w gt 0, q gt 0, Delta U gt 0`

C

`w lt 0, q gt 0, Delta U = 0`

D

`w gt 0, q = 0, Delta U gt 0`

Text Solution

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The correct Answer is:
D
`q=0, " "DeltaU=q+w`
`wgt0 " so "DeltaU gt 0`
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NARENDRA AWASTHI ENGLISH-THERMODYNAMICS-Level 3
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