Related Questions
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Refrigeration cycle
A. Violates second law of thermodynamics
B. Involves transfer of heat from low temperature to high temperature
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Which is a state function?
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With increase in compression ratio, the efficiency of the otto engine
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For spontaneous changes in an isolated system (S = entropy)
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Sound waves propagation in air exemplifies an __________ process.
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The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process.
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In the decomposition of PCl5 represented by, PCl5 PCl3 + Cl2, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.
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Gibbs free energy (F) is defined as
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There is a change in __________ during the phase transition.
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Trouton's ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K)
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__________ decreases during adiabatic throttling of a perfect gas.
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With increase in temperature, the atomic heat capacities of all solid elements
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Which of the following decreases with increase in pressure?
C. Boiling point of liquids
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A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is
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At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is
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The principle applied in liquefaction of gases is
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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)
B. (∂P/∂V)S = [(∂P/∂V)T]Y
D. (∂P/∂V)S = 1/y(∂P/∂V)T
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If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the
B. Clausius-Clapeyron Equation
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The acentric factor of a materical, 'ω', is defined as ω = -log10(Prsat)Tr-1 = 0.7, where, Prsat = reduced vapor pressure, Tr = reduced temperature. The value of acentric factor is always
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Which of the following is a thermodynamic property of a system?
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When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change. This is called the
A. Le-Chatelier principle
C. Law of corresponding state
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An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to
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Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.
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__________ functions are exemplified by heat and work.
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The difference between isothermal compressibility and adiabatic compressibility for an ideal gas is
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What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope?
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The equation relating E, P, V and T which is true for all substances under all conditions is given by (∂E/∂V)T = T(∂P/∂T)H - P. This equation is called the
B. Thermodynamic equation of state
D. Redlich-Kwong equation of state
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The value of Cp & Cv respectively for monatomic gases in Kcal/kg Mole.°K are
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In an ideal gas mixture, fugacity of a species is equal to its
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The absolute entropy for all crystalline substances at absolute zero temperature is