Related Questions
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4
The intensive properties are
A. Molar volume, density, viscosity and boiling point
B. Refractive index and surface tension
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4
The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise.
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4
If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in
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4
One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one
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In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases by about __________ percent.
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4
A large iceberg melts at the base, but not at the top, because of the reason that
A. Ice at the base contains impurities which lowers its melting point
B. Due to the high pressure at the base, its melting point reduces
C. The iceberg remains in a warmer condition at the base
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4
A reasonably general expression for vapourliquid phase equilibrium at low to moderate pressure is φi yi P = Yi xifi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of
B. Temperature and pressure only
C. Temperature, pressure and liquid composition xi only
D. Temperature, pressure, liquid composition xi and vapour composition yi
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In a homogeneous solution, the activity coefficient of a component depends upon the
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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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4
(∂T/∂P)H is the mathematical expression for
A. Specific heat at constant pressure (Cp)
B. Specific heat at constant volume (Cv)
C. Joule-Thompson co-efficient
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4
The gas law (PV = RT) is true for an __________ change.
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If the internal energy of an ideal gas decreases by the same amount as the work done by the system, then the
A. Process must be isobaric
B. Temperature must decrease
C. Process must be adiabatic
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The adiabatic throttling process of a perfect gas is one of constant enthalpy
A. In which there is a temperature drop
B. Which is exemplified by a non-steady flow expansion
C. Which can be performed in a pipe with a constriction
D. In which there is an increase in temperature
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4
Clapeyron Equation deals with the
A. Rate of change of vapour pressure with temperature
B. Effect of an inert gas on vapour pressure
C. Calculation of ΔF for spontaneous phase change
D. Temperature dependence of heat of phase transition
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4
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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For an isothermal reversible compression of an ideal gas
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Charles' law for gases states that
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During a reversible isothermal expansion of an ideal gas, the entropy change is
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The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point is
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4
Pick out the correct statement.
A. Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero
B. Melting of ice involves increase in enthalpy and a decrease in randomness
C. The internal energy of an ideal gas depends only on its pressure
D. Maximum work is done under reversible conditions
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4
At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.
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Consider the reaction, C + O2 CO2; ΔH = - 94 kcal. What will be the value of ΔH for the reaction CO2 → C + O2?
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Pick out the correct equation relating 'F' and 'A'.
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COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about
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Measurement of thermodynamic property of temperature is facilitated by __________ law of thermodynamics.
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Which of the following non-flow reversible compression processes require maximum work?
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For a reversible process involving only pressure-volume work
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For an ideal solution, the value of activity co-efficient is
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In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible __________ process.
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In Joule-Thomson porous plug experiment, the
A. Enthalpy does not remain constant
B. Entire apparatus is exposed to surroundings
C. Temperature remains constant