Related Questions
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A gas has a volume of 27.3 c.c. at 0°C. Its volume at 10°C (if pressure remains unchanged) will be __________ c.c.
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Joule-Thomson Co-efficient at any point on the inversion curve is
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The value of Cp & Cv respectively for monatomic gases in Kcal/kg Mole.°K are
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The expression, ΔG = nRT. ln(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 an ideal gas
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In case of a close thermodynamic system, there is __________ across the boundaries.
A. No heat and mass transfer
B. No mass transfer but heat transfer
C. Mass and energy transfer
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Dryness fraction of wet steam is defined as the ratio of mass of vapour in the mixture to the mass of mixture __________ calorimeter is not used for measuring the dryness fraction of steam.
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The chemical potential of any constituent of an ideal solution depends on the __________ of the solution.
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Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called __________ solutions.
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__________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low.
D. A combination of separating & throttling
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Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.
D. Decreases logarithmically
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Dry ice is
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Reduced pressure of a gas is the ratio of its
A. Pressure to critical pressure
B. Critical pressure to pressure
C. Pressure to pseudocritical pressure
D. Pseudocritical pressure to pressure
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Degrees of freedom at triple point will be
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Which of the following is not an extensive property?
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The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise.
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Which is a state function?
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The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. The units of __________ and COP are the same.
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In the equation, PVn = constant, if the value of n = ± ∞, then it represents a reversible __________ process.
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As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T) approaches
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Number of phases in a colloidal system is:
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In a P-V diagram (for an ideal gas), an isothermal curve will coincide within adiabatic curve (through a point), when
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The first law of thermodynamics is a restatement of the law of conservation of
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The minimum number of phases that can exist in a system is
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Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is
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Entropy change for an irreversible isolated system is
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In any spontaneous process,
C. Both F and A decreases
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Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.
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Throttling (Joule-Thomson effect) process is a constant __________ process.
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The principle applied in liquefaction of gases is
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Chemical potential of ith component of a system is given by