Related Questions
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The internal energy of an incompressible fluid depends upon its
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Generation of heat by friction is an example of a/an __________ change.
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__________ explains the equilibrium constant for any chemical reaction.
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Pick out the wrong statement.
A. A closed system does not permit exchange of mass with its surroundings but may permit exchange of energy.
B. An open system permits exchange of both mass and energy with its surroundings
C. The term microstate is used to characterise an individual, whereas macro-state is used to designate a group of micro-states with common characteristics
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4
In Joule-Thomson porous plug experiment, the
A. Enthalpy does not remain constant
B. Entire apparatus is exposed to surroundings
C. Temperature remains constant
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In a homogeneous solution, the fugacity of a component depends upon the
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During a reversible isothermal expansion of an ideal gas, the entropy change is
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The number of degrees of freedom for a mixture of ice and water (liquid) are
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Ideal gas law is applicable at
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A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the __________ mean of P1 and P2. (where, P1 and P2 are initial and final pressures respectively)
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The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 - T2)/T1. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T1 and T2 is given by
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The internal energy of an ideal gas does not change in a reversible __________ process.
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The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while freezing.
C. Does not change in volume
D. Either (A), (B) or (C)
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In any spontaneous process,
C. Both F and A decreases
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Water on heating from 1 to 4°C
D. May contract or expand
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At __________ point, all the three phases (i.e. solid, liquid and gas) co-exist.
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For a multi-component system, the term chemical potential is equivalent to the
A. Molal concentration difference
C. Partial molar free energy
D. Molar free energy change
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When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is
C. Same in both the phases
D. Replaced by chemical potential which is more in vapour phase
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The kinetic energy of gas molecule is zero at
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Melting of ice exemplifies a/an
D. Process involving a chemical reaction
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Pick out the correct statement.
A. Entropy and enthalpy are path functions
B. In a closed system, the energy can be exchanged with the surrounding, while matter cannot be exchanged
C. All the natural processes are reversible in nature
D. Work is a state function
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For an ideal solution, the value of activity co-efficient 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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Specific/molar Gibbs free energy for a pure substance does not change during
D. Either (A), (B) or (C)
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With increase in compression ratio, the efficiency of the otto engine
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Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the
A. Cold reservoir approaches zero
B. Hot reservoir approaches infinity
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Which of the following is Virial equation of state?
A. (p + a/V2)(V - b) = nRT
C. PV = A + B/V + C/V2 + D/V3 + ...
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Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole.
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The chemical potential of a component (μi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by
B. (∂G/∂ni)T, P, nj = (∂A/∂ni) T, v, nj
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The extensive properties are
A. Volume, mass and number of moles
B. Free energy, entropy and enthalpy