358. For an irreversible process, entropy change is
A.Greater than
B.Equal to 5Q
C.Less than 8Q
D.Equal to zero

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359. Change of entropy depends upon
A.Change of mass
B.Change of heat
C.Change of specific heats
D.Change of pressure and volume

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360. The value of Joule-Kelvin coefficient for an ideal gas is
A.1
B.Some - ve value
C.Some + ve value
D.Zero

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361. A closed gaseous system unaergoes a reversible process during which 200 kcal are rejected, the volume changing from 4 m3 to 2 m3 and the pressure remaining constant at 4.27 kg/cm2. The change of internal energy will be
A.+ 10 kcal
B.- 10 kcal
C.0
D.+ 5 kcal

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362. An engine operates between temperature limits of 900°K and T2 and another between T2 and 400°K. For both to be equally efficient, T2 will be equal to
A.600°K
B.650°K
C.625°K
D.700°K

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363. The value of entropy at 0°C is taken as
A.1
B.Zero
C.-1
D.Some other value

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364. If in previous problem, the heat rejected is 315 kcal/mt, then process will be
A.Reversible
B.Irreversible
C.Impossible
D.Hypothetical

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