Month: November 2020
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The relation connecting the fugacities of various components in a solution with one another and to composition at constant temperature and pressure is called the __________ equation.
A. Gibbs-Duhem B. Van Laar C. Gibbs-Helmholtz D. Margules
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The quantitative effect of temperature on chemical equilibrium is given by the
A. Vant-Hoff equation B. Le-Chatelier’s principle C. Arhenius equation D. None of these
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Air-refrigeration cycle
A. Is the most efficient of all refrigeration cycles B. Has very low efficiency C. Requires relatively large quantities of air to achieve…
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Claude gas liquefaction process employs cooling
A. At constant pressure B. By throttling C. By expansion in an engine D. None of these
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Specific __________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.).
A. Entropy B. Internal energy C. Enthalpy D. Gibbs free energy
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Entropy change of the reaction, H₂O(liquid) H₂O(gas), is termed as the enthalpy of
A. Solution B. Vaporisation C. Formation D. Formation
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The thermodynamic law, PVy = constant, is not applicable in case of
A. Ideal compression of air B. Free expansion of an ideal gas C. Adiabatic expansion of steam in a turbine D. Adiabatic compression of…
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The expression, ΔG = nRT .In P₂/P₁ , gives the free energy change
A. With pressure changes at constant temperature B. Under reversible isothermal volume change C. During heating of an ideal gas D. During cooling of…
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Chemical Engineering Thermodynamics (MCQs)
At absolute zero temperature, all substances have the same
A. Heat capacity B. Crystalline structure C. Entropy D. None of these