Chemical Engineering Thermodynamics Free energy All of these Remains unchanged in reversible processes carried at constant temperature and pressure Change during a spontaneous process has a negative value Decreases in all spontaneous (or irreversible) processes All of these Remains unchanged in reversible processes carried at constant temperature and pressure Change during a spontaneous process has a negative value Decreases in all spontaneous (or irreversible) processes ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Water on heating from 1 to 4°C May contract or expand Expands Has same volume Contracts May contract or expand Expands Has same volume Contracts ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics For an exothremic reaction Only enthalpy change (ΔH) is negative Both ΔH and ΔE are negative Only internal energy change (ΔE) is negative Enthalpy change is zero Only enthalpy change (ΔH) is negative Both ΔH and ΔE are negative Only internal energy change (ΔE) is negative Enthalpy change is zero ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases by about __________ percent. 0.25 0.5 0.75 1 0.25 0.5 0.75 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In case of a reversible process (following pvn = constant), work obtained for trebling the volume (v₁ = 1 m³ and v₂ 3 m³ ) is max imum, when the value of 'n' is 1.66 1.44 1 1.66 1.44 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Which of the following will increase the volume of a real gas by four times ? Doubling the absolute temperature as well as pressure of the gas Reducing pressure to one fourth at constant temperature Reducing temperature to one fourth at constant pressure Reducing the temperature to half and doubling the pressure Doubling the absolute temperature as well as pressure of the gas Reducing pressure to one fourth at constant temperature Reducing temperature to one fourth at constant pressure Reducing the temperature to half and doubling the pressure ANSWER DOWNLOAD EXAMIANS APP
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