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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

`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

Verified by Experts

The correct Answer is:
D
`q=0, " "DeltaU=q+w`
`wgt0 " so "DeltaU gt 0`
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NARENDRA AWASTHI-THERMODYNAMICS-Exercise
  1. Determine which of the following reactions taking place at constant pr...

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  2. Determine which of the following reactions at constant pressure rep...

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  3. A sample of liquid in a thermally insulated constant ( a calorimetre...

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  4. An ideal gas expand against a constant external pressure at 2.0 atmosp...

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  5. 2 mole of zinc is dissolved in HCl at 25^(@) C. The work done in open ...

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  6. 2 mole of an ideal gas at 27^(@)C expands isothermally and reversibly ...

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  7. A given mass of gas expands from state A to state B by three paths 1,2...

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  8. Heat energy absorbed by a system in going through a cyclic process sho...

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  9. In the cyclic process shown in the V-P diagram the magnitude of the wo...

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  10. An ideal gas is taken around the cycle ABCA as shown in P-V diagram. T...

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  11. The temperature of an ideal gas increases in an:

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  12. In following figs. Variation of volume by change of pressure is shown ...

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  13. If the door of a refrigerator is kept open, then which of the followin...

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  14. The temperature of an ideal gas increases in an:

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  15. For two mole of an ideal gas :

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  16. Which of the following expression is/are true ?

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  17. If liquefied oxygen at 1 atmospheric pressure is heated from 50K to 30...

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  18. For a closed container containing 100 mol of an ideal gas fitted with ...

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  19. 10 mole of ideal gas expand isothermally and reversibly from a pressur...

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  20. A heat engine carries one mole of an ideal monoatomic gas around the c...

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