A. (dF)T, p <0
B. (dF)T, p = 0
C. (dF)T, p > 0
D. (dA)T, v >0
Related Mcqs:
- For a reversible process involving only pressure-volume work____________________?
A. (dF)T, p 0
C. (dF)T, p = 0
D. (dA)T, v < 0 - A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively) ?
A. Δ S1 is always Δ SR
C. Δ S1 is always > Δ SR
D. Δ S1 is always = Δ SR - In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is_______________?
A. More
B. Less
C. Same
D. Unpredictable; depends on the particular reaction - A gas has a volume of 27.3 c.c. at 0°C. Its volume at 10°C (if pressure remains unchanged) will be _____________ c.c?
A. 2.73
B. 28.3
C. 273
D. 283 - Entropy change for an irreversible process taking system and surrounding together is___________________?
A. 0
B. > 0
C. < 0
D. None of these - A gas at 0°C was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be________________?
A. 0°C
B. 0°K
C. -136.5°C
D. -136.5°K - In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases by about _____________ percent?
A. 0.25
B. 0.5
C. 0.75
D. 1 - An irreversible process____________________?
A. Is the analog of linear frictionless motion in machines
B. Is an idealised visualisation of behaviour of a system
C. Yields the maximum amount of work
D. Yields an amount of work less than that of a reversible process - Entropy change for an irreversible isolated system is__________________?
A. ∞
B. 0
C. < 0
D. > 0 - In an irreversible process________________?
A. Tds = dE – dW = 0
B. dE – dW – Tds = 0
C. Tds – dE + dW < 0
D. Tds – dT + dW < 0
