A. Only ΔE = 0
B. Only ΔH =0
C. ΔE = ΔH = 0
D. dQ = dE
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Related Mcqs:
- On a P-V diagram of an ideal gas, suppose a reversible adiabatic line intersects a reversible isothermal line at point A. Then at a point A, the slope of the reversible adiabatic line (∂P/∂V)s and the slope of the reversible isothermal line (∂P/∂V)T are related as (where, y = Cp/Cv) ?
- A. (∂P/∂V)S = (∂P/∂V)T B. (∂P/∂V)S = [(∂P/∂V)T]Y C. (∂P/∂V)S = y(∂P/∂V)T D. (∂P/∂V)S = 1/y(∂P/∂V)T...
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- The work done in isothermal compression compared to that in adiabatic compression will be__________________?
- A. Less B. More C. Same D. More or less depending upon the extent of work done...
- During a reversible isothermal expansion of an ideal gas, the entropy change is_________________?
- A. +ve B. 0 C. -ve D. ∞...
- During a reversible isothermal expansion of an ideal gas, the entropy change is___________________?
- A. +ve B. 0 C. -ve D. ∞...
- The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is_________________?
- A. R loge 4 B. R log10 4 C. Cv log10 4 D. Cv loge 4...
- Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is___________________?
- A. 300 × (32/7) B. 300 × (33/5) C. 300 × (333/7) D. 300 × (35/7)...
- 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...
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