274. Mixture of ice and water form a
A.Closed system
B.Open system
C.Isolated system
D.Heterogeneous system

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275. Which of the following is the property of a system
A.Pressure and temperature
B.Volume and density
C.Enthalpy and entropy
D.All of the above

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276. On weight basis, air contains following parts of oxygen
A.21
B.23
C.25
D.73

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277. Which of the following is not the intensive property
A.Pressure
B.Temperature
C.Density
D.Heat

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278. Which of the following items is not a path function
A.Heat
B.Thermal conductivity
C.Kinetic energy
D.∫vdp

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279. Work done in an adiabatic process between a given pair of end states depends on
A.The end states only
B.Particular adiabatic process
C.The value of index 'n'
D.The value of heat-transferred

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280. Heat and work are
A.Point functions
B.Path functions
C.Intensive properties
D.Extensive properties.

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