Related Questions
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Which of the following behaves most closely like an ideal gas?
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Refrigerants commonly used for domestic refrigerators are
A. Ethyl chloride or methyl chloride
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For an isothermal process, the internal energy of a gas
D. Data insufficient, can't be predicted
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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
B. Partially condensed vapour with quality of 0.9
D. Partially condensed vapour with quality of 0.1
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For the gaseous phase chemical reaction, C2H4(g) + H2O(g) ↔ C2H5OH(g), the equilibrium conversion does not depend on the
A. Steam to ethylene ratio
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At the critical point of a substance
A. The surface tension vanishes
B. Liquid and vapour have the same density
C. There is no distinction between liquid and vapour phases
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Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole. °K
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1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated container. If the specific heat capacity (at constant pressure) of the gas is 21 J/mole . K, the final temperature will be
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During the phase transition, __________ changes.
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y = specific heat ratio of an ideal gas is equal to
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Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is
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Joule-Thomson co-efficient is defined as
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Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.
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__________ explains the equilibrium constant for any chemical reaction.
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In the reaction, represented by, 2SO2 + O2 2SO3; ΔH = - 42 kcal; the forward reaction will be favoured by
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Heat is added at constant temperature in an ideal __________ cycle.
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The energy of activation of exothermic reaction is
C. Very large compared to that for endothermic reaction
D. Not possible to predict
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The standard state of a gas (at a given temperature) is the state in which fugacity is equal to
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On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will
D. Increase in summer and will decrease in winter
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Pick out the wrong statement.
A. Activity co-efficient is dimensionless.
B. In case of an ideal gas, the fugacity is equal to its pressure.
C. In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the component.
D. The fugacity co-efficient is zero for an ideal gas
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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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The most important application of distribution law is in
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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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Melting of ice is an example of an __________ process.
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Isentropic process means a constant __________ process.
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Sound waves propagation in air exemplifies an __________ process.
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Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a
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The expression, nCv(T2 - T1), is for the __________ of an ideal gas.
A. Work done under adiabatic condition
B. Co-efficient of thermal expansion
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Chemical potential of ith component of a system is given by
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For a reversible process involving only pressure-volume work