Related Questions
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4
Mollier diagram is a plot of
A. Temperature vs. enthalpy
B. Temperature vs. enthalpy
D. Temperature vs. internal energy
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4
Throttling (Joule-Thomson effect) process is a constant __________ process.
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4
Which is not a refrigerant?
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4
The number of degree of freedom for an Azeotropic mixture of ethanol and water in vapourliquid equilibrium, is
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4
Which of the following decreases with increase in pressure?
C. Boiling point of liquids
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4
Entropy change of mixing two liquid substances depends upon the
B. Quantity (i.e. number of moles)
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4
During Joule-Thomson expansion of gases
A. Enthalpy remains constant
B. Entropy remains constant
C. Temperature remains constant
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4
Specific/molar Gibbs free energy for a pure substance does not change during
D. Either (A), (B) or (C)
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4
Efficiency of a Carnot engine working between temperatures T1 and T2 (T1 < T) is
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The equation, Cp - Cv = R, is true for __________ gas.
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4
At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be
D. More or less; depending on the system
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4
Sound waves propagation in air exemplifies an __________ process.
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4
Boiling of liquid is accompanied with increase in the
B. Specific Gibbs free energy
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4
In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible __________ process.
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4
Melting of ice is an example of an __________ process.
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The expression for entropy change, ΔS = n Cp . ln (T2/T1), is valid for the __________ of a substance.
A. Simultaneous pressure & temperature change
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If two gases have same reduced temperature and reduced pressure, then they will have the same
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The heat capacities for the ideal gas state depend upon the
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The chemical potential for a pure substance is __________ its partial molal free energy.
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Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and temperature __________ as its mole fraction increases.
B. Decreases exponentially
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4
A solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially at 25°C is contained in a perfectly insulated tank. The metallic block is brought into contact with water. Both of them come to equilibrium. Specific heat of block material is 0.4 kJ.kg-1. K-1. Ignoring the effect of expansion and contraction and also the heat capacity to tank, the total entropy change in kJ.kg-1, K-1 is
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4
__________ Equation predicts the activity coefficient from experimental data.
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(∂H/∂T)P is the mathematical expression for
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A Carnot cycle consists of the following steps:
A. Two isothermal and two isentropic
B. Two isobaric and two isothermal
C. Two isochoric and two isobaric
D. Two isothermals and two isochoric
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4
Maxwell's relation corresponding to the identity, dH = dS = Vdp + Σμi dni is
A. (∂T/∂V)S, ni = -(∂P/∂S)V, ni
B. (∂S/∂P)T, ni = (∂V/∂T)P, ni
C. (∂S/∂V)T, ni = (∂P/∂T)V, ni
D. (∂T/∂P)S, ni = (∂V/∂S)P, ni
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4
Which is a state function?
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Which of the following is Virial equation of state?
A. (p + a/V2)(V - b) = nRT
C. PV = A + B/V + C/V2 + D/V3 + ...
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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
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4
In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible __________ process.
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4
The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for
A. Reversible isothermal volume change
B. Heating of a substance
C. Cooling of a substance
D. Simultaneous heating and expansion of an ideal gas