Thermodynamics for Chemical Mcqs

Q.  Pick out the undesirable property for a good refrigerant ?

a. High thermal conductivity
b. Low freezing point
c. Large latent heat of vaporisation
d. High viscosity


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg. K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is_______________?
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MCQs:  The expression, ΔG = nRT. ln(P2/P1), gives the free energy change______________?
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MCQs:  What is the degree of freedom for two miscible (non-reacting) substances in vapor-liquid equilibrium forming an azeotrope ?
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MCQs:  For any system, what is the minimum number of degrees of freedom ?
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MCQs:  At the critical point of a substance____________?
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MCQs:  The number of degrees of freedom for an azeotropic mixture in a two component vapourliquid equilibria is/are__________________?
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MCQs:  The freezing point of a liquid decreases when the pressure is increased, if the liquid ____________ while freezing?
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MCQs:  The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law)____________________?
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MCQs:  Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole. °K___________________?
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MCQs:  In any spontaneous process, the ______________ free energy decreases ?
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MCQs:  At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is__________________?
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MCQs:  What is the value of Joule-Thomson co-efficient for an ideal gas ?
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MCQs:  If atmospheric temperature and dew point are nearly equal, then the relative humidity is_______________?
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MCQs:  No work is done by the system, when a reaction occurs at constant__________________?
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MCQs:  Joule-Thomson Co-efficient at any point on the inversion curve is___________________?
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MCQs:  At absolute zero temperature, the _____________ of the gas is zero?
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MCQs:  For a constant volume process_________________?
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MCQs:  Fundamental principle of refrigeration is based on the ______________ law of thermodynamics?
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MCQs:  Entropy change in case of reversible adiabatic process is________________?
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MCQs:  Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as________________?
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